Merge latest Pushes into the GCA tree

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mysql-test/r/timestamp_func.result

-** Setup **
-
-** Connecting con0 using root **
 ** Connecting con1 using root **
-'#-----------------------------FN_DYNVARS_179_01------------------#'
-** Connection con0 **
-SET @ts_old = @@SESSION.timestamp;
-waiting 1 sec
-SET @ts_new = @@SESSION.timestamp;
-SELECT @ts_new - @ts_old >= 1 AS 'Timestamp Difference';
-Timestamp Difference
+SELECT date(now()) = date(sysdate());
+date(now()) = date(sysdate())
+1
+SET @@session.timestamp = 1100000000;
+SELECT date(now()) != date(sysdate());
+date(now()) != date(sysdate())
+1
+** Connecting con0 using root **
+SELECT @@session.timestamp != 1100000000;
+@@session.timestamp != 1100000000
+1
+SET @@session.timestamp = 1000000000;
+SELECT date(now()) != date(sysdate());
+date(now()) != date(sysdate())
 1
-1 means >=1 expected is true
 ** Connection con1 **
-SET @ts_old = @@SESSION.timestamp;
-waiting 4 sec
-SET @ts_new = @@SESSION.timestamp;
-SELECT @ts_new - @ts_old >= 4 AS 'Timestamp Difference';
-Timestamp Difference
+SELECT @@session.timestamp != 1000000000;
+@@session.timestamp != 1000000000
 1
-1 means >=4 expected is true
-'#-----------------------------FN_DYNVARS_179_02---------------------#'
-SET @ts_old = @@SESSION.timestamp;
-Changing time zone
-SET time_zone = 'MET';
-SET @ts_new = @@SESSION.timestamp;
-SELECT @ts_new - @ts_old >= 1 AS 'Timestamp Difference';
-Timestamp Difference
+SELECT @@session.timestamp = 1100000000;
+@@session.timestamp = 1100000000
 1
-1 means >=1 expected is true
-** Cleanup **
 ** Connection default **
 Disconnecting Connections con0, con1

mysql-test/r/timestamp_sysdate_is_now_func.result

+** Connecting con1 using root **
+SELECT date(now()) = date(sysdate());
+date(now()) = date(sysdate())
+1
+SET @@session.timestamp = 1100000000;
+SELECT date(now()) != date(sysdate());
+date(now()) != date(sysdate())
+0
+** Connecting con0 using root **
+SELECT @@session.timestamp != 1100000000;
+@@session.timestamp != 1100000000
+1
+SET @@session.timestamp = 1000000000;
+SELECT date(now()) != date(sysdate());
+date(now()) != date(sysdate())
+0
+** Connection con1 **
+SELECT @@session.timestamp != 1000000000;
+@@session.timestamp != 1000000000
+1
+SELECT @@session.timestamp = 1100000000;
+@@session.timestamp = 1100000000
+1
+** Connection default **
+Disconnecting Connections con0, con1

mysql-test/r/variables-notembedded.result

@@ -15,3 +15,95 @@ slave_skip_errors	3,100,137,643,1752
 ---- Clean Up ----
 set global slave_net_timeout=default;
 set global sql_slave_skip_counter= 0;
+
+#
+SHOW VARIABLES like 'log_slave_updates';
+Variable_name	Value
+log_slave_updates	OFF
+SELECT @@session.log_slave_updates;
+ERROR HY000: Variable 'log_slave_updates' is a GLOBAL variable
+SELECT @@global.log_slave_updates;
+@@global.log_slave_updates
+0
+SET @@session.log_slave_updates= true;
+ERROR HY000: Variable 'log_slave_updates' is a read only variable
+SET @@global.log_slave_updates= true;
+ERROR HY000: Variable 'log_slave_updates' is a read only variable
+#
+SHOW VARIABLES like 'relay_log';
+Variable_name	Value
+relay_log	
+SELECT @@session.relay_log;
+ERROR HY000: Variable 'relay_log' is a GLOBAL variable
+SELECT @@global.relay_log;
+@@global.relay_log
+NULL
+SET @@session.relay_log= 'x';
+ERROR HY000: Variable 'relay_log' is a read only variable
+SET @@global.relay_log= 'x';
+ERROR HY000: Variable 'relay_log' is a read only variable
+#
+SHOW VARIABLES like 'relay_log_index';
+Variable_name	Value
+relay_log_index	
+SELECT @@session.relay_log_index;
+ERROR HY000: Variable 'relay_log_index' is a GLOBAL variable
+SELECT @@global.relay_log_index;
+@@global.relay_log_index
+NULL
+SET @@session.relay_log_index= 'x';
+ERROR HY000: Variable 'relay_log_index' is a read only variable
+SET @@global.relay_log_index= 'x';
+ERROR HY000: Variable 'relay_log_index' is a read only variable
+#
+SHOW VARIABLES like 'relay_log_info_file';
+Variable_name	Value
+relay_log_info_file	relay-log.info
+SELECT @@session.relay_log_info_file;
+ERROR HY000: Variable 'relay_log_info_file' is a GLOBAL variable
+SELECT @@global.relay_log_info_file;
+@@global.relay_log_info_file
+relay-log.info
+SET @@session.relay_log_info_file= 'x';
+ERROR HY000: Variable 'relay_log_info_file' is a read only variable
+SET @@global.relay_log_info_file= 'x';
+ERROR HY000: Variable 'relay_log_info_file' is a read only variable
+#
+SHOW VARIABLES like 'relay_log_space_limit';
+Variable_name	Value
+relay_log_space_limit	0
+SELECT @@session.relay_log_space_limit;
+ERROR HY000: Variable 'relay_log_space_limit' is a GLOBAL variable
+SELECT @@global.relay_log_space_limit;
+@@global.relay_log_space_limit
+0
+SET @@session.relay_log_space_limit= 7;
+ERROR HY000: Variable 'relay_log_space_limit' is a read only variable
+SET @@global.relay_log_space_limit= 7;
+ERROR HY000: Variable 'relay_log_space_limit' is a read only variable
+#
+SHOW VARIABLES like 'slave_load_tmpdir';
+Variable_name	Value
+slave_load_tmpdir	#
+SELECT @@session.slave_load_tmpdir;
+ERROR HY000: Variable 'slave_load_tmpdir' is a GLOBAL variable
+SELECT @@global.slave_load_tmpdir;
+@@global.slave_load_tmpdir
+#
+SET @@session.slave_load_tmpdir= 'x';
+ERROR HY000: Variable 'slave_load_tmpdir' is a read only variable
+SET @@global.slave_load_tmpdir= 'x';
+ERROR HY000: Variable 'slave_load_tmpdir' is a read only variable
+#
+SHOW VARIABLES like 'slave_skip_errors';
+Variable_name	Value
+slave_skip_errors	3,100,137,643,1752
+SELECT @@session.slave_skip_errors;
+ERROR HY000: Variable 'slave_skip_errors' is a GLOBAL variable
+SELECT @@global.slave_skip_errors;
+@@global.slave_skip_errors
+3,100,137,643,1752
+SET @@session.slave_skip_errors= 7;
+ERROR HY000: Variable 'slave_skip_errors' is a read only variable
+SET @@global.slave_skip_errors= 7;
+ERROR HY000: Variable 'slave_skip_errors' is a read only variable

mysql-test/r/variables.result

@@ -1011,3 +1011,342 @@ SET GLOBAL log_output = 0;
 ERROR 42000: Variable 'log_output' can't be set to the value of '0'
 
 # -- End of Bug#34820.
+
+#
+SHOW VARIABLES like 'ft_max_word_len';
+Variable_name	Value
+ft_max_word_len	84
+SELECT @@session.ft_max_word_len;
+ERROR HY000: Variable 'ft_max_word_len' is a GLOBAL variable
+SELECT @@global.ft_max_word_len;
+@@global.ft_max_word_len
+84
+SET @@session.ft_max_word_len= 7;
+ERROR HY000: Variable 'ft_max_word_len' is a read only variable
+SET @@global.ft_max_word_len= 7;
+ERROR HY000: Variable 'ft_max_word_len' is a read only variable
+#
+SHOW VARIABLES like 'ft_min_word_len';
+Variable_name	Value
+ft_min_word_len	4
+SELECT @@session.ft_min_word_len;
+ERROR HY000: Variable 'ft_min_word_len' is a GLOBAL variable
+SELECT @@global.ft_min_word_len;
+@@global.ft_min_word_len
+4
+SET @@session.ft_min_word_len= 7;
+ERROR HY000: Variable 'ft_min_word_len' is a read only variable
+SET @@global.ft_min_word_len= 7;
+ERROR HY000: Variable 'ft_min_word_len' is a read only variable
+#
+SHOW VARIABLES like 'ft_query_expansion_limit';
+Variable_name	Value
+ft_query_expansion_limit	20
+SELECT @@session.ft_query_expansion_limit;
+ERROR HY000: Variable 'ft_query_expansion_limit' is a GLOBAL variable
+SELECT @@global.ft_query_expansion_limit;
+@@global.ft_query_expansion_limit
+20
+SET @@session.ft_query_expansion_limit= 7;
+ERROR HY000: Variable 'ft_query_expansion_limit' is a read only variable
+SET @@global.ft_query_expansion_limit= 7;
+ERROR HY000: Variable 'ft_query_expansion_limit' is a read only variable
+#
+SHOW VARIABLES like 'ft_stopword_file';
+Variable_name	Value
+ft_stopword_file	(built-in)
+SELECT @@session.ft_stopword_file;
+ERROR HY000: Variable 'ft_stopword_file' is a GLOBAL variable
+SELECT @@global.ft_stopword_file;
+@@global.ft_stopword_file
+(built-in)
+SET @@session.ft_stopword_file= 'x';
+ERROR HY000: Variable 'ft_stopword_file' is a read only variable
+SET @@global.ft_stopword_file= 'x';
+ERROR HY000: Variable 'ft_stopword_file' is a read only variable
+#
+SHOW VARIABLES like 'back_log';
+Variable_name	Value
+back_log	50
+SELECT @@session.back_log;
+ERROR HY000: Variable 'back_log' is a GLOBAL variable
+SELECT @@global.back_log;
+@@global.back_log
+50
+SET @@session.back_log= 7;
+ERROR HY000: Variable 'back_log' is a read only variable
+SET @@global.back_log= 7;
+ERROR HY000: Variable 'back_log' is a read only variable
+#
+SHOW VARIABLES like 'large_files_support';
+Variable_name	Value
+large_files_support	#
+SELECT @@session.large_files_support;
+ERROR HY000: Variable 'large_files_support' is a GLOBAL variable
+SELECT @@global.large_files_support;
+@@global.large_files_support
+#
+SET @@session.large_files_support= true;
+ERROR HY000: Variable 'large_files_support' is a read only variable
+SET @@global.large_files_support= true;
+ERROR HY000: Variable 'large_files_support' is a read only variable
+#
+SHOW VARIABLES like 'character_sets_dir';
+Variable_name	Value
+character_sets_dir	#
+SELECT @@session.character_sets_dir;
+ERROR HY000: Variable 'character_sets_dir' is a GLOBAL variable
+SELECT @@global.character_sets_dir;
+@@global.character_sets_dir
+#
+SET @@session.character_sets_dir= 'x';
+ERROR HY000: Variable 'character_sets_dir' is a read only variable
+SET @@global.character_sets_dir= 'x';
+ERROR HY000: Variable 'character_sets_dir' is a read only variable
+#
+SHOW VARIABLES like 'init_file';
+Variable_name	Value
+init_file	#
+SELECT @@session.init_file;
+ERROR HY000: Variable 'init_file' is a GLOBAL variable
+SELECT @@global.init_file;
+@@global.init_file
+#
+SET @@session.init_file= 'x';
+ERROR HY000: Variable 'init_file' is a read only variable
+SET @@global.init_file= 'x';
+ERROR HY000: Variable 'init_file' is a read only variable
+#
+SHOW VARIABLES like 'language';
+Variable_name	Value
+language	#
+SELECT @@session.language;
+ERROR HY000: Variable 'language' is a GLOBAL variable
+SELECT @@global.language;
+@@global.language
+#
+SET @@session.language= 'x';
+ERROR HY000: Variable 'language' is a read only variable
+SET @@global.language= 'x';
+ERROR HY000: Variable 'language' is a read only variable
+#
+SHOW VARIABLES like 'large_page_size';
+Variable_name	Value
+large_page_size	#
+SELECT @@session.large_page_size;
+ERROR HY000: Variable 'large_page_size' is a GLOBAL variable
+SELECT @@global.large_page_size;
+@@global.large_page_size
+#
+SET @@session.large_page_size= 7;
+ERROR HY000: Variable 'large_page_size' is a read only variable
+SET @@global.large_page_size= 7;
+ERROR HY000: Variable 'large_page_size' is a read only variable
+#
+SHOW VARIABLES like 'large_pages';
+Variable_name	Value
+large_pages	#
+SELECT @@session.large_pages;
+ERROR HY000: Variable 'large_pages' is a GLOBAL variable
+SELECT @@global.large_pages;
+@@global.large_pages
+#
+SET @@session.large_pages= true;
+ERROR HY000: Variable 'large_pages' is a read only variable
+SET @@global.large_pages= true;
+ERROR HY000: Variable 'large_pages' is a read only variable
+#
+SHOW VARIABLES like 'log_bin';
+Variable_name	Value
+log_bin	OFF
+SELECT @@session.log_bin;
+ERROR HY000: Variable 'log_bin' is a GLOBAL variable
+SELECT @@global.log_bin;
+@@global.log_bin
+0
+SET @@session.log_bin= true;
+ERROR HY000: Variable 'log_bin' is a read only variable
+SET @@global.log_bin= true;
+ERROR HY000: Variable 'log_bin' is a read only variable
+#
+SHOW VARIABLES like 'log_error';
+Variable_name	Value
+log_error	#
+SELECT @@session.log_error;
+ERROR HY000: Variable 'log_error' is a GLOBAL variable
+SELECT @@global.log_error;
+@@global.log_error
+#
+SET @@session.log_error= 'x';
+ERROR HY000: Variable 'log_error' is a read only variable
+SET @@global.log_error= 'x';
+ERROR HY000: Variable 'log_error' is a read only variable
+#
+SHOW VARIABLES like 'lower_case_file_system';
+Variable_name	Value
+lower_case_file_system	#
+SELECT @@session.lower_case_file_system;
+ERROR HY000: Variable 'lower_case_file_system' is a GLOBAL variable
+SELECT @@global.lower_case_file_system;
+@@global.lower_case_file_system
+#
+SET @@session.lower_case_file_system= true;
+ERROR HY000: Variable 'lower_case_file_system' is a read only variable
+SET @@global.lower_case_file_system= true;
+ERROR HY000: Variable 'lower_case_file_system' is a read only variable
+#
+SHOW VARIABLES like 'lower_case_table_names';
+Variable_name	Value
+lower_case_table_names	#
+SELECT @@session.lower_case_table_names;
+ERROR HY000: Variable 'lower_case_table_names' is a GLOBAL variable
+SELECT @@global.lower_case_table_names;
+@@global.lower_case_table_names
+#
+SET @@session.lower_case_table_names= 7;
+ERROR HY000: Variable 'lower_case_table_names' is a read only variable
+SET @@global.lower_case_table_names= 7;
+ERROR HY000: Variable 'lower_case_table_names' is a read only variable
+#
+SHOW VARIABLES like 'myisam_recover_options';
+Variable_name	Value
+myisam_recover_options	OFF
+SELECT @@session.myisam_recover_options;
+ERROR HY000: Variable 'myisam_recover_options' is a GLOBAL variable
+SELECT @@global.myisam_recover_options;
+@@global.myisam_recover_options
+OFF
+SET @@session.myisam_recover_options= 'x';
+ERROR HY000: Variable 'myisam_recover_options' is a read only variable
+SET @@global.myisam_recover_options= 'x';
+ERROR HY000: Variable 'myisam_recover_options' is a read only variable
+#
+SHOW VARIABLES like 'open_files_limit';
+Variable_name	Value
+open_files_limit	#
+SELECT @@session.open_files_limit;
+ERROR HY000: Variable 'open_files_limit' is a GLOBAL variable
+SELECT @@global.open_files_limit;
+@@global.open_files_limit
+#
+SET @@session.open_files_limit= 7;
+ERROR HY000: Variable 'open_files_limit' is a read only variable
+SET @@global.open_files_limit= 7;
+ERROR HY000: Variable 'open_files_limit' is a read only variable
+#
+SHOW VARIABLES like 'pid_file';
+Variable_name	Value
+pid_file	#
+SELECT @@session.pid_file;
+ERROR HY000: Variable 'pid_file' is a GLOBAL variable
+SELECT @@global.pid_file;
+@@global.pid_file
+#
+SET @@session.pid_file= 'x';
+ERROR HY000: Variable 'pid_file' is a read only variable
+SET @@global.pid_file= 'x';
+ERROR HY000: Variable 'pid_file' is a read only variable
+#
+SHOW VARIABLES like 'plugin_dir';
+Variable_name	Value
+plugin_dir	#
+SELECT @@session.plugin_dir;
+ERROR HY000: Variable 'plugin_dir' is a GLOBAL variable
+SELECT @@global.plugin_dir;
+@@global.plugin_dir
+#
+SET @@session.plugin_dir= 'x';
+ERROR HY000: Variable 'plugin_dir' is a read only variable
+SET @@global.plugin_dir= 'x';
+ERROR HY000: Variable 'plugin_dir' is a read only variable
+#
+SHOW VARIABLES like 'port';
+Variable_name	Value
+port	#
+SELECT @@session.port;
+ERROR HY000: Variable 'port' is a GLOBAL variable
+SELECT @@global.port;
+@@global.port
+#
+SET @@session.port= 7;
+ERROR HY000: Variable 'port' is a read only variable
+SET @@global.port= 7;
+ERROR HY000: Variable 'port' is a read only variable
+#
+SHOW VARIABLES like 'protocol_version';
+Variable_name	Value
+protocol_version	10
+SELECT @@session.protocol_version;
+ERROR HY000: Variable 'protocol_version' is a GLOBAL variable
+SELECT @@global.protocol_version;
+@@global.protocol_version
+10
+SET @@session.protocol_version= 7;
+ERROR HY000: Variable 'protocol_version' is a read only variable
+SET @@global.protocol_version= 7;
+ERROR HY000: Variable 'protocol_version' is a read only variable
+#
+SHOW VARIABLES like 'skip_external_locking';
+Variable_name	Value
+skip_external_locking	ON
+SELECT @@session.skip_external_locking;
+ERROR HY000: Variable 'skip_external_locking' is a GLOBAL variable
+SELECT @@global.skip_external_locking;
+@@global.skip_external_locking
+1
+SET @@session.skip_external_locking= true;
+ERROR HY000: Variable 'skip_external_locking' is a read only variable
+SET @@global.skip_external_locking= true;
+ERROR HY000: Variable 'skip_external_locking' is a read only variable
+#
+SHOW VARIABLES like 'skip_networking';
+Variable_name	Value
+skip_networking	OFF
+SELECT @@session.skip_networking;
+ERROR HY000: Variable 'skip_networking' is a GLOBAL variable
+SELECT @@global.skip_networking;
+@@global.skip_networking
+0
+SET @@session.skip_networking= true;
+ERROR HY000: Variable 'skip_networking' is a read only variable
+SET @@global.skip_networking= true;
+ERROR HY000: Variable 'skip_networking' is a read only variable
+#
+SHOW VARIABLES like 'skip_show_database';
+Variable_name	Value
+skip_show_database	OFF
+SELECT @@session.skip_show_database;
+ERROR HY000: Variable 'skip_show_database' is a GLOBAL variable
+SELECT @@global.skip_show_database;
+@@global.skip_show_database
+0
+SET @@session.skip_show_database= true;
+ERROR HY000: Variable 'skip_show_database' is a read only variable
+SET @@global.skip_show_database= true;
+ERROR HY000: Variable 'skip_show_database' is a read only variable
+#
+SHOW VARIABLES like 'socket';
+Variable_name	Value
+socket	#
+SELECT @@session.socket;
+ERROR HY000: Variable 'socket' is a GLOBAL variable
+SELECT @@global.socket;
+@@global.socket
+#
+SET @@session.socket= 'x';
+ERROR HY000: Variable 'socket' is a read only variable
+SET @@global.socket= 'x';
+ERROR HY000: Variable 'socket' is a read only variable
+#
+SHOW VARIABLES like 'thread_stack';
+Variable_name	Value
+thread_stack	#
+SELECT @@session.thread_stack;
+ERROR HY000: Variable 'thread_stack' is a GLOBAL variable
+SELECT @@global.thread_stack;
+@@global.thread_stack
+#
+SET @@session.thread_stack= 7;
+ERROR HY000: Variable 'thread_stack' is a read only variable
+SET @@global.thread_stack= 7;
+ERROR HY000: Variable 'thread_stack' is a read only variable

mysql-test/t/timestamp_func.test

@@ -9,6 +9,8 @@
 # Creation Date: 2008-02-25                                                #
 # Author:  Sharique Abdullah                                               #
 #                                                                          #
+# Modified: HHunger 2008-08-28 Reimplemented the test completely.          #
+#                                                                          #
 # Description: Test Cases of Dynamic System Variable "timestamp"           #
 #              that checks behavior of this variable in the following ways #
 #              * Functionality based on different values                   #
@@ -17,63 +19,32 @@
 #                                                                          #
 ############################################################################
 
---echo ** Setup **
---echo
-#
-# Setup
-#
---echo ** Connecting con0 using root **
-connect (con0,localhost,root,,);
---echo ** Connecting con1 using root **
-connect (con1, localhost, root,,);
-
---echo '#-----------------------------FN_DYNVARS_179_01------------------#'
-#
-# Checking for connection 1
-#
+# Change timestamp which must have an effect on now(), but not on sysdate().
+# Use Unix epoch timestamp
+# All comparisons must deliver true(1)
+# Exception: --sysdate-is-now switches off this behaviour and must not be set.
 
---echo ** Connection con0 **
-connection con0;
-SET @ts_old = @@SESSION.timestamp;
---echo waiting 1 sec
---sleep 1
-SET @ts_new = @@SESSION.timestamp;
-SELECT @ts_new - @ts_old >= 1 AS 'Timestamp Difference';
---echo 1 means >=1 expected is true
+--echo ** Connecting con1 using root **
+connect (con1,localhost,root,,);
+SELECT date(now()) = date(sysdate());
+SET @@session.timestamp = 1100000000;
+SELECT date(now()) != date(sysdate());
 
+# Assure that setting of the variable has no effect on other session.
+--echo ** Connecting con0 using root **
+connect (con0,localhost,root,,);
+SELECT @@session.timestamp != 1100000000;
+SET @@session.timestamp = 1000000000;
+SELECT date(now()) != date(sysdate());
 
-#
-# Checking for connection 2
-#
 --echo ** Connection con1 **
 connection con1;
-SET @ts_old = @@SESSION.timestamp;
---echo waiting 4 sec
---sleep 4
-SET @ts_new = @@SESSION.timestamp;
-SELECT @ts_new - @ts_old >= 4 AS 'Timestamp Difference';
---echo 1 means >=4 expected is true
-
---echo '#-----------------------------FN_DYNVARS_179_02---------------------#'
-#
-# Testing timezone change effect
-#
-
-SET @ts_old = @@SESSION.timestamp;
---sleep 1
---echo Changing time zone
-SET time_zone = 'MET';
-SET @ts_new = @@SESSION.timestamp;
-SELECT @ts_new - @ts_old >= 1 AS 'Timestamp Difference';
---echo 1 means >=1 expected is true
-
-#
-# Cleanup
-#
---echo ** Cleanup **
+SELECT @@session.timestamp != 1000000000;
+SELECT @@session.timestamp = 1100000000;
 
 --echo ** Connection default **
 connection default;
 --echo Disconnecting Connections con0, con1
 disconnect con0;
 disconnect con1;
+

mysql-test/t/timestamp_sysdate_is_now_func-master.opt

+--sysdate-is-now

mysql-test/t/timestamp_sysdate_is_now_func.test

+############################################################################
+#                                                                          #
+# Variable Name: timestamp with sysdate-is-now                             #
+# Scope: GLOBAL                                                            #
+# Access Type: Dynamic                                                     #
+# Data Type: INTEGER                                                       #
+#                                                                          #
+#                                                                          #
+# Creation Date: 2008-11-25                                                #
+# Author:  Horst Hunger                                                    #
+#                                                                          #
+# Description: Test Cases of Dynamic System Variable "timestamp"           #
+#              that checks behavior of this variable in the following ways #
+#              * Like timstamp_func, but with set "sysdate-is-now".        #
+#                                                                          #
+# Reference: http://dev.mysql.com/doc/refman/5.1/en/set-option.html        #
+#                                                                          #
+############################################################################
+
+# Use Unix epoch timestamp
+# Due to "--sysdate-is-now" timestamp must have an effect on both.
+# See also timestamp_func.test.
+
+--echo ** Connecting con1 using root **
+connect (con1,localhost,root,,);
+SELECT date(now()) = date(sysdate());
+SET @@session.timestamp = 1100000000;
+SELECT date(now()) != date(sysdate());
+
+# Assure that setting of the variable has no effect on other session.
+--echo ** Connecting con0 using root **
+connect (con0,localhost,root,,);
+SELECT @@session.timestamp != 1100000000;
+SET @@session.timestamp = 1000000000;
+SELECT date(now()) != date(sysdate());
+
+--echo ** Connection con1 **
+connection con1;
+SELECT @@session.timestamp != 1000000000;
+SELECT @@session.timestamp = 1100000000;
+
+--echo ** Connection default **
+connection default;
+--echo Disconnecting Connections con0, con1
+disconnect con0;
+disconnect con1;
+

mysql-test/t/variables-notembedded.test

@@ -28,3 +28,83 @@ set global slave_net_timeout=default;
 # sql_slave_skip_counter is write-only, so we can't save previous
 # value and restore it here.  That's ok, because it's normally 0.
 set global sql_slave_skip_counter= 0;
+
+#
+# Bug#28234 - global/session scope - documentation vs implementation
+#
+--echo
+#
+# Additional variables fixed from sql_repl.cc.
+#
+--echo #
+SHOW VARIABLES like 'log_slave_updates';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SELECT @@session.log_slave_updates;
+SELECT @@global.log_slave_updates;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@session.log_slave_updates= true;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@global.log_slave_updates= true;
+#
+--echo #
+SHOW VARIABLES like 'relay_log';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SELECT @@session.relay_log;
+SELECT @@global.relay_log;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@session.relay_log= 'x';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@global.relay_log= 'x';
+#
+--echo #
+SHOW VARIABLES like 'relay_log_index';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SELECT @@session.relay_log_index;
+SELECT @@global.relay_log_index;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@session.relay_log_index= 'x';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@global.relay_log_index= 'x';
+#
+--echo #
+SHOW VARIABLES like 'relay_log_info_file';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SELECT @@session.relay_log_info_file;
+SELECT @@global.relay_log_info_file;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@session.relay_log_info_file= 'x';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@global.relay_log_info_file= 'x';
+#
+--echo #
+SHOW VARIABLES like 'relay_log_space_limit';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SELECT @@session.relay_log_space_limit;
+SELECT @@global.relay_log_space_limit;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@session.relay_log_space_limit= 7;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@global.relay_log_space_limit= 7;
+#
+--echo #
+--replace_column 2 #
+SHOW VARIABLES like 'slave_load_tmpdir';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SELECT @@session.slave_load_tmpdir;
+--replace_column 1 #
+SELECT @@global.slave_load_tmpdir;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@session.slave_load_tmpdir= 'x';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@global.slave_load_tmpdir= 'x';
+#
+--echo #
+SHOW VARIABLES like 'slave_skip_errors';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SELECT @@session.slave_skip_errors;
+SELECT @@global.slave_skip_errors;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@session.slave_skip_errors= 7;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@global.slave_skip_errors= 7;
+#

mysql-test/t/variables.test

@@ -793,3 +793,299 @@ SET GLOBAL log_output = 0;
 --echo
 --echo # -- End of Bug#34820.
 
+#
+# Bug#28234 - global/session scope - documentation vs implementation
+#
+--echo
+--echo #
+SHOW VARIABLES like 'ft_max_word_len';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SELECT @@session.ft_max_word_len;
+SELECT @@global.ft_max_word_len;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@session.ft_max_word_len= 7;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@global.ft_max_word_len= 7;
+#
+--echo #
+SHOW VARIABLES like 'ft_min_word_len';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SELECT @@session.ft_min_word_len;
+SELECT @@global.ft_min_word_len;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@session.ft_min_word_len= 7;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@global.ft_min_word_len= 7;
+#
+--echo #
+SHOW VARIABLES like 'ft_query_expansion_limit';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SELECT @@session.ft_query_expansion_limit;
+SELECT @@global.ft_query_expansion_limit;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@session.ft_query_expansion_limit= 7;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@global.ft_query_expansion_limit= 7;
+#
+--echo #
+SHOW VARIABLES like 'ft_stopword_file';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SELECT @@session.ft_stopword_file;
+SELECT @@global.ft_stopword_file;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@session.ft_stopword_file= 'x';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@global.ft_stopword_file= 'x';
+#
+# Additional variables fixed.
+#
+--echo #
+SHOW VARIABLES like 'back_log';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SELECT @@session.back_log;
+SELECT @@global.back_log;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@session.back_log= 7;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@global.back_log= 7;
+#
+--echo #
+--replace_column 2 #
+SHOW VARIABLES like 'large_files_support';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SELECT @@session.large_files_support;
+--replace_column 1 #
+SELECT @@global.large_files_support;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@session.large_files_support= true;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@global.large_files_support= true;
+#
+--echo #
+--replace_column 2 #
+SHOW VARIABLES like 'character_sets_dir';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SELECT @@session.character_sets_dir;
+--replace_column 1 #
+SELECT @@global.character_sets_dir;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@session.character_sets_dir= 'x';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@global.character_sets_dir= 'x';
+#
+--echo #
+--replace_column 2 #
+SHOW VARIABLES like 'init_file';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SELECT @@session.init_file;
+--replace_column 1 #
+SELECT @@global.init_file;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@session.init_file= 'x';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@global.init_file= 'x';
+#
+--echo #
+--replace_column 2 #
+SHOW VARIABLES like 'language';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SELECT @@session.language;
+--replace_column 1 #
+SELECT @@global.language;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@session.language= 'x';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@global.language= 'x';
+#
+--echo #
+--replace_column 2 #
+SHOW VARIABLES like 'large_page_size';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SELECT @@session.large_page_size;
+--replace_column 1 #
+SELECT @@global.large_page_size;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@session.large_page_size= 7;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@global.large_page_size= 7;
+#
+--echo #
+--replace_column 2 #
+SHOW VARIABLES like 'large_pages';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SELECT @@session.large_pages;
+--replace_column 1 #
+SELECT @@global.large_pages;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@session.large_pages= true;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@global.large_pages= true;
+#
+--echo #
+SHOW VARIABLES like 'log_bin';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SELECT @@session.log_bin;
+SELECT @@global.log_bin;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@session.log_bin= true;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@global.log_bin= true;
+#
+--echo #
+--replace_column 2 #
+SHOW VARIABLES like 'log_error';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SELECT @@session.log_error;
+--replace_column 1 #
+SELECT @@global.log_error;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@session.log_error= 'x';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@global.log_error= 'x';
+#
+--echo #
+--replace_column 2 #
+SHOW VARIABLES like 'lower_case_file_system';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SELECT @@session.lower_case_file_system;
+--replace_column 1 #
+SELECT @@global.lower_case_file_system;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@session.lower_case_file_system= true;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@global.lower_case_file_system= true;
+#
+--echo #
+--replace_column 2 #
+SHOW VARIABLES like 'lower_case_table_names';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SELECT @@session.lower_case_table_names;
+--replace_column 1 #
+SELECT @@global.lower_case_table_names;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@session.lower_case_table_names= 7;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@global.lower_case_table_names= 7;
+#
+--echo #
+SHOW VARIABLES like 'myisam_recover_options';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SELECT @@session.myisam_recover_options;
+SELECT @@global.myisam_recover_options;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@session.myisam_recover_options= 'x';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@global.myisam_recover_options= 'x';
+#
+--echo #
+--replace_column 2 #
+SHOW VARIABLES like 'open_files_limit';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SELECT @@session.open_files_limit;
+--replace_column 1 #
+SELECT @@global.open_files_limit;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@session.open_files_limit= 7;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@global.open_files_limit= 7;
+#
+--echo #
+--replace_column 2 #
+SHOW VARIABLES like 'pid_file';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SELECT @@session.pid_file;
+--replace_column 1 #
+SELECT @@global.pid_file;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@session.pid_file= 'x';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@global.pid_file= 'x';
+#
+--echo #
+--replace_column 2 #
+SHOW VARIABLES like 'plugin_dir';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SELECT @@session.plugin_dir;
+--replace_column 1 #
+SELECT @@global.plugin_dir;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@session.plugin_dir= 'x';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@global.plugin_dir= 'x';
+#
+--echo #
+--replace_column 2 #
+SHOW VARIABLES like 'port';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SELECT @@session.port;
+--replace_column 1 #
+SELECT @@global.port;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@session.port= 7;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@global.port= 7;
+#
+--echo #
+SHOW VARIABLES like 'protocol_version';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SELECT @@session.protocol_version;
+SELECT @@global.protocol_version;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@session.protocol_version= 7;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@global.protocol_version= 7;
+#
+--echo #
+SHOW VARIABLES like 'skip_external_locking';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SELECT @@session.skip_external_locking;
+SELECT @@global.skip_external_locking;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@session.skip_external_locking= true;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@global.skip_external_locking= true;
+#
+--echo #
+SHOW VARIABLES like 'skip_networking';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SELECT @@session.skip_networking;
+SELECT @@global.skip_networking;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@session.skip_networking= true;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@global.skip_networking= true;
+#
+--echo #
+SHOW VARIABLES like 'skip_show_database';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SELECT @@session.skip_show_database;
+SELECT @@global.skip_show_database;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@session.skip_show_database= true;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@global.skip_show_database= true;
+#
+--echo #
+--replace_column 2 #
+SHOW VARIABLES like 'socket';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SELECT @@session.socket;
+--replace_column 1 #
+SELECT @@global.socket;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@session.socket= 'x';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@global.socket= 'x';
+#
+--echo #
+--replace_column 2 #
+SHOW VARIABLES like 'thread_stack';
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SELECT @@session.thread_stack;
+--replace_column 1 #
+SELECT @@global.thread_stack;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@session.thread_stack= 7;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SET @@global.thread_stack= 7;
+#

sql/item_func.cc

@@ -4855,6 +4855,7 @@ void Item_func_get_system_var::fix_length_and_dec()
       max_length= MAX_BLOB_WIDTH;
       decimals=NOT_FIXED_DEC;
       break;
+    case SHOW_BOOL:
     case SHOW_MY_BOOL:
       unsigned_flag= FALSE;
       max_length= 1;
@@ -4882,6 +4883,7 @@ enum Item_result Item_func_get_system_var::result_type() const
 {
   switch (var->show_type())
   {
+    case SHOW_BOOL:
     case SHOW_MY_BOOL:
     case SHOW_INT:
     case SHOW_LONG:
@@ -4904,6 +4906,7 @@ enum_field_types Item_func_get_system_var::field_type() const
 {
   switch (var->show_type())
   {
+    case SHOW_BOOL:
     case SHOW_MY_BOOL:
     case SHOW_INT:
     case SHOW_LONG:
@@ -4922,6 +4925,10 @@ enum_field_types Item_func_get_system_var::field_type() const
 }
 
 
+/*
+  Uses var, var_type, component, cache_present, used_query_id, thd,
+  cached_llval, null_value, cached_null_value
+*/
 #define get_sys_var_safe(type) \
 do { \
   type value; \
@@ -4975,6 +4982,7 @@ longlong Item_func_get_system_var::val_int()
     case SHOW_LONG:     get_sys_var_safe (ulong);
     case SHOW_LONGLONG: get_sys_var_safe (longlong);
     case SHOW_HA_ROWS:  get_sys_var_safe (ha_rows);
+    case SHOW_BOOL:     get_sys_var_safe (bool);
     case SHOW_MY_BOOL:  get_sys_var_safe (my_bool);
     case SHOW_DOUBLE:
       {
@@ -5072,6 +5080,7 @@ String* Item_func_get_system_var::val_str(String* str)
     case SHOW_LONG:
     case SHOW_LONGLONG:
     case SHOW_HA_ROWS:
+    case SHOW_BOOL:
     case SHOW_MY_BOOL:
       str->set (val_int(), collation.collation);
       break;
@@ -5164,6 +5173,7 @@ double Item_func_get_system_var::val_real()
     case SHOW_LONG:
     case SHOW_LONGLONG:
     case SHOW_HA_ROWS:
+    case SHOW_BOOL:
     case SHOW_MY_BOOL:
         cached_dval= (double) val_int();
         cache_present|= GET_SYS_VAR_CACHE_DOUBLE;

sql/set_var.cc

@@ -77,7 +77,6 @@ extern ulong ndb_report_thresh_binlog_mem_usage;
 extern CHARSET_INFO *character_set_filesystem;
 
 
-static DYNAMIC_ARRAY fixed_show_vars;
 static HASH system_variable_hash;
 
 const char *bool_type_names[]= { "OFF", "ON", NullS };
@@ -174,6 +173,9 @@ sys_auto_increment_offset(&vars, "auto_increment_offset",
 static sys_var_bool_ptr	sys_automatic_sp_privileges(&vars, "automatic_sp_privileges",
 					      &sp_automatic_privileges);
 
+static sys_var_const            sys_back_log(&vars, "back_log",
+                                             OPT_GLOBAL, SHOW_LONG,
+                                             (uchar*) &back_log);
 static sys_var_const_str       sys_basedir(&vars, "basedir", mysql_home);
 static sys_var_long_ptr	sys_binlog_cache_size(&vars, "binlog_cache_size",
 					      &binlog_cache_size);
@@ -181,6 +183,11 @@ static sys_var_thd_binlog_format sys_binlog_format(&vars, "binlog_format",
                                             &SV::binlog_format);
 static sys_var_thd_ulong	sys_bulk_insert_buff_size(&vars, "bulk_insert_buffer_size",
 						  &SV::bulk_insert_buff_size);
+static sys_var_const            sys_character_sets_dir(&vars,
+                                                       "character_sets_dir",
+                                                       OPT_GLOBAL, SHOW_CHAR,
+                                                       (uchar*)
+                                                       mysql_charsets_dir);
 static sys_var_character_set_sv
 sys_character_set_server(&vars, "character_set_server",
                          &SV::collation_server, &default_charset_info, 0,
@@ -254,9 +261,26 @@ static sys_var_str             sys_ft_boolean_syntax(&vars, "ft_boolean_syntax",
                                               sys_update_ftb_syntax,
                                               sys_default_ftb_syntax,
                                               ft_boolean_syntax);
+static sys_var_const    sys_ft_max_word_len(&vars, "ft_max_word_len",
+                                            OPT_GLOBAL, SHOW_LONG,
+                                            (uchar*) &ft_max_word_len);
+static sys_var_const    sys_ft_min_word_len(&vars, "ft_min_word_len",
+                                            OPT_GLOBAL, SHOW_LONG,
+                                            (uchar*) &ft_min_word_len);
+static sys_var_const    sys_ft_query_expansion_limit(&vars,
+                                                     "ft_query_expansion_limit",
+                                                     OPT_GLOBAL, SHOW_LONG,
+                                                     (uchar*)
+                                                     &ft_query_expansion_limit);
+static sys_var_const    sys_ft_stopword_file(&vars, "ft_stopword_file",
+                                             OPT_GLOBAL, SHOW_CHAR_PTR,
+                                             (uchar*) &ft_stopword_file);
 sys_var_str             sys_init_connect(&vars, "init_connect", 0,
                                          sys_update_init_connect,
                                          sys_default_init_connect,0);
+static sys_var_const    sys_init_file(&vars, "init_file",
+                                      OPT_GLOBAL, SHOW_CHAR_PTR,
+                                      (uchar*) &opt_init_file);
 sys_var_str             sys_init_slave(&vars, "init_slave", 0,
                                        sys_update_init_slave,
                                        sys_default_init_slave,0);
@@ -274,14 +298,37 @@ static sys_var_key_cache_long	sys_key_cache_division_limit(&vars, "key_cache_div
 static sys_var_key_cache_long  sys_key_cache_age_threshold(&vars, "key_cache_age_threshold",
 						     offsetof(KEY_CACHE,
 							      param_age_threshold));
+static sys_var_const    sys_language(&vars, "language",
+                                     OPT_GLOBAL, SHOW_CHAR,
+                                     (uchar*) language);
+static sys_var_const    sys_large_files_support(&vars, "large_files_support",
+                                                OPT_GLOBAL, SHOW_BOOL,
+                                                (uchar*) &opt_large_files);
+static sys_var_const    sys_large_page_size(&vars, "large_page_size",
+                                            OPT_GLOBAL, SHOW_INT,
+                                            (uchar*) &opt_large_page_size);
+static sys_var_const    sys_large_pages(&vars, "large_pages",
+                                        OPT_GLOBAL, SHOW_MY_BOOL,
+                                        (uchar*) &opt_large_pages);
 static sys_var_bool_ptr	sys_local_infile(&vars, "local_infile",
 					 &opt_local_infile);
+#ifdef HAVE_MLOCKALL
+static sys_var_const    sys_locked_in_memory(&vars, "locked_in_memory",
+                                             OPT_GLOBAL, SHOW_MY_BOOL,
+                                             (uchar*) &locked_in_memory);
+#endif
+static sys_var_const    sys_log_bin(&vars, "log_bin",
+                                    OPT_GLOBAL, SHOW_BOOL,
+                                    (uchar*) &opt_bin_log);
 static sys_var_trust_routine_creators
 sys_trust_routine_creators(&vars, "log_bin_trust_routine_creators",
                            &trust_function_creators);
 static sys_var_bool_ptr       
 sys_trust_function_creators(&vars, "log_bin_trust_function_creators",
                             &trust_function_creators);
+static sys_var_const    sys_log_error(&vars, "log_error",
+                                      OPT_GLOBAL, SHOW_CHAR,
+                                      (uchar*) log_error_file);
 static sys_var_bool_ptr
   sys_log_queries_not_using_indexes(&vars, "log_queries_not_using_indexes",
                                     &opt_log_queries_not_using_indexes);
@@ -296,6 +343,16 @@ static sys_var_thd_bool	sys_sql_low_priority_updates(&vars, "sql_low_priority_up
 						     &SV::low_priority_updates,
 						     fix_low_priority_updates);
 #endif
+static sys_var_const    sys_lower_case_file_system(&vars,
+                                                   "lower_case_file_system",
+                                                   OPT_GLOBAL, SHOW_MY_BOOL,
+                                                   (uchar*)
+                                                   &lower_case_file_system);
+static sys_var_const    sys_lower_case_table_names(&vars,
+                                                   "lower_case_table_names",
+                                                   OPT_GLOBAL, SHOW_INT,
+                                                   (uchar*)
+                                                   &lower_case_table_names);
 static sys_var_thd_ulong_session_readonly sys_max_allowed_packet(&vars, "max_allowed_packet",
 					       &SV::max_allowed_packet);
 static sys_var_long_ptr	sys_max_binlog_cache_size(&vars, "max_binlog_cache_size",
@@ -359,6 +416,10 @@ static sys_var_thd_ulong       sys_multi_range_count(&vars, "multi_range_count",
 static sys_var_long_ptr	sys_myisam_data_pointer_size(&vars, "myisam_data_pointer_size",
                                                     &myisam_data_pointer_size);
 static sys_var_thd_ulonglong	sys_myisam_max_sort_file_size(&vars, "myisam_max_sort_file_size", &SV::myisam_max_sort_file_size, fix_myisam_max_sort_file_size, 1);
+static sys_var_const sys_myisam_recover_options(&vars, "myisam_recover_options",
+                                                OPT_GLOBAL, SHOW_CHAR_PTR,
+                                                (uchar*)
+                                                &myisam_recover_options_str);
 static sys_var_thd_ulong       sys_myisam_repair_threads(&vars, "myisam_repair_threads", &SV::myisam_repair_threads);
 static sys_var_thd_ulong	sys_myisam_sort_buffer_size(&vars, "myisam_sort_buffer_size", &SV::myisam_sort_buff_size);
 static sys_var_bool_ptr	sys_myisam_use_mmap(&vars, "myisam_use_mmap",
@@ -369,6 +430,13 @@ static sys_var_thd_enum         sys_myisam_stats_method(&vars, "myisam_stats_met
                                                 &myisam_stats_method_typelib,
                                                 NULL);
 
+#ifdef __NT__
+/* purecov: begin inspected */
+static sys_var_const            sys_named_pipe(&vars, "named_pipe",
+                                               OPT_GLOBAL, SHOW_MY_BOOL,
+                                               (uchar*) &opt_enable_named_pipe);
+/* purecov: end */
+#endif
 static sys_var_thd_ulong_session_readonly sys_net_buffer_length(&vars, "net_buffer_length",
 					      &SV::net_buffer_length);
 static sys_var_thd_ulong	sys_net_read_timeout(&vars, "net_read_timeout",
@@ -387,12 +455,29 @@ static sys_var_bool_ptr_readonly sys_old_mode(&vars, "old",
 sys_var_thd_bool                sys_old_alter_table(&vars, "old_alter_table",
                                             &SV::old_alter_table);
 sys_var_thd_bool                sys_old_passwords(&vars, "old_passwords", &SV::old_passwords);
+static sys_var_const            sys_open_files_limit(&vars, "open_files_limit",
+                                                     OPT_GLOBAL, SHOW_LONG,
+                                                     (uchar*)
+                                                     &open_files_limit);
 static sys_var_thd_ulong        sys_optimizer_prune_level(&vars, "optimizer_prune_level",
                                                   &SV::optimizer_prune_level);
 static sys_var_thd_ulong        sys_optimizer_search_depth(&vars, "optimizer_search_depth",
                                                    &SV::optimizer_search_depth);
+static sys_var_const            sys_pid_file(&vars, "pid_file",
+                                             OPT_GLOBAL, SHOW_CHAR,
+                                             (uchar*) pidfile_name);
+static sys_var_const            sys_plugin_dir(&vars, "plugin_dir",
+                                               OPT_GLOBAL, SHOW_CHAR,
+                                               (uchar*) opt_plugin_dir);
+static sys_var_const            sys_port(&vars, "port",
+                                         OPT_GLOBAL, SHOW_INT,
+                                         (uchar*) &mysqld_port);
 static sys_var_thd_ulong        sys_preload_buff_size(&vars, "preload_buffer_size",
                                               &SV::preload_buff_size);
+static sys_var_const            sys_protocol_version(&vars, "protocol_version",
+                                                     OPT_GLOBAL, SHOW_INT,
+                                                     (uchar*)
+                                                     &protocol_version);
 static sys_var_thd_ulong	sys_read_buff_size(&vars, "read_buffer_size",
 					   &SV::read_buff_size);
 static sys_var_opt_readonly	sys_readonly(&vars, "read_only", &opt_readonly);
@@ -414,6 +499,45 @@ static sys_var_thd_ulong	sys_query_alloc_block_size(&vars, "query_alloc_block_si
 static sys_var_thd_ulong	sys_query_prealloc_size(&vars, "query_prealloc_size",
 						&SV::query_prealloc_size,
 						0, fix_thd_mem_root);
+#ifdef HAVE_SMEM
+/* purecov: begin tested */
+static sys_var_const    sys_shared_memory(&vars, "shared_memory",
+                                          OPT_GLOBAL, SHOW_MY_BOOL,
+                                          (uchar*)
+                                          &opt_enable_shared_memory);
+static sys_var_const    sys_shared_memory_base_name(&vars,
+                                                    "shared_memory_base_name",
+                                                    OPT_GLOBAL, SHOW_CHAR_PTR,
+                                                    (uchar*)
+                                                    &shared_memory_base_name);
+/* purecov: end */
+#endif
+static sys_var_const    sys_skip_external_locking(&vars,
+                                                  "skip_external_locking",
+                                                  OPT_GLOBAL, SHOW_MY_BOOL,
+                                                  (uchar*)
+                                                  &my_disable_locking);
+static sys_var_const    sys_skip_networking(&vars, "skip_networking",
+                                            OPT_GLOBAL, SHOW_BOOL,
+                                            (uchar*) &opt_disable_networking);
+static sys_var_const    sys_skip_show_database(&vars, "skip_show_database",
+                                            OPT_GLOBAL, SHOW_BOOL,
+                                            (uchar*) &opt_skip_show_db);
+#ifdef HAVE_SYS_UN_H
+static sys_var_const    sys_socket(&vars, "socket",
+                                   OPT_GLOBAL, SHOW_CHAR_PTR,
+                                   (uchar*) &mysqld_unix_port);
+#endif
+#ifdef HAVE_THR_SETCONCURRENCY
+/* purecov: begin tested */
+static sys_var_const    sys_thread_concurrency(&vars, "thread_concurrency",
+                                               OPT_GLOBAL, SHOW_LONG,
+                                               (uchar*) &concurrency);
+/* purecov: end */
+#endif
+static sys_var_const    sys_thread_stack(&vars, "thread_stack",
+                                         OPT_GLOBAL, SHOW_LONG,
+                                         (uchar*) &my_thread_stack_size);
 static sys_var_readonly        sys_tmpdir(&vars, "tmpdir", OPT_GLOBAL, SHOW_CHAR, get_tmpdir);
 static sys_var_thd_ulong	sys_trans_alloc_block_size(&vars, "transaction_alloc_block_size",
 						   &SV::trans_alloc_block_size,
@@ -764,59 +888,6 @@ static sys_var_log_output sys_var_log_output_state(&vars, "log_output", &log_out
 					    &log_output_typelib, 0);
 
 
-/*
-  Additional variables (not derived from sys_var class, not accessible as
-  @@varname in SELECT or SET). Sorted in alphabetical order to facilitate
-  maintenance - SHOW VARIABLES will sort its output.
-  TODO: remove this list completely
-*/
-
-#define FIXED_VARS_SIZE (sizeof(fixed_vars) / sizeof(SHOW_VAR))
-static SHOW_VAR fixed_vars[]= {
-  {"back_log",                (char*) &back_log,                    SHOW_LONG},
-  {"character_sets_dir",      mysql_charsets_dir,                   SHOW_CHAR},
-  {"ft_max_word_len",         (char*) &ft_max_word_len,             SHOW_LONG},
-  {"ft_min_word_len",         (char*) &ft_min_word_len,             SHOW_LONG},
-  {"ft_query_expansion_limit",(char*) &ft_query_expansion_limit,    SHOW_LONG},
-  {"ft_stopword_file",        (char*) &ft_stopword_file,            SHOW_CHAR_PTR},
-  {"init_file",               (char*) &opt_init_file,               SHOW_CHAR_PTR},
-  {"language",                language,                             SHOW_CHAR},
-  {"large_files_support",     (char*) &opt_large_files,             SHOW_BOOL},
-  {"large_page_size",         (char*) &opt_large_page_size,         SHOW_INT},
-  {"large_pages",             (char*) &opt_large_pages,             SHOW_MY_BOOL},
-#ifdef HAVE_MLOCKALL
-  {"locked_in_memory",	      (char*) &locked_in_memory,	    SHOW_MY_BOOL},
-#endif
-  {"log_bin",                 (char*) &opt_bin_log,                 SHOW_BOOL},
-  {"log_error",               (char*) log_error_file,               SHOW_CHAR},
-  {"lower_case_file_system",  (char*) &lower_case_file_system,      SHOW_MY_BOOL},
-  {"lower_case_table_names",  (char*) &lower_case_table_names,      SHOW_INT},
-  {"myisam_recover_options",  (char*) &myisam_recover_options_str,  SHOW_CHAR_PTR},
-#ifdef __NT__
-  {"named_pipe",	      (char*) &opt_enable_named_pipe,       SHOW_MY_BOOL},
-#endif
-  {"open_files_limit",	      (char*) &open_files_limit,	    SHOW_LONG},
-  {"pid_file",                (char*) pidfile_name,                 SHOW_CHAR},
-  {"plugin_dir",              (char*) opt_plugin_dir,               SHOW_CHAR},
-  {"port",                    (char*) &mysqld_port,                 SHOW_INT},
-  {"protocol_version",        (char*) &protocol_version,            SHOW_INT},
-#ifdef HAVE_SMEM
-  {"shared_memory",           (char*) &opt_enable_shared_memory,    SHOW_MY_BOOL},
-  {"shared_memory_base_name", (char*) &shared_memory_base_name,     SHOW_CHAR_PTR},
-#endif
-  {"skip_external_locking",   (char*) &my_disable_locking,          SHOW_MY_BOOL},
-  {"skip_networking",         (char*) &opt_disable_networking,      SHOW_BOOL},
-  {"skip_show_database",      (char*) &opt_skip_show_db,            SHOW_BOOL},
-#ifdef HAVE_SYS_UN_H
-  {"socket",                  (char*) &mysqld_unix_port,            SHOW_CHAR_PTR},
-#endif
-#ifdef HAVE_THR_SETCONCURRENCY
-  {"thread_concurrency",      (char*) &concurrency,                 SHOW_LONG},
-#endif
-  {"thread_stack",            (char*) &my_thread_stack_size,        SHOW_LONG},
-};
-
-
 bool sys_var::check(THD *thd, set_var *var)
 {
   var->save_result.ulonglong_value= var->value->val_int();
@@ -3135,14 +3206,12 @@ static int show_cmp(SHOW_VAR *a, SHOW_VAR *b)
 SHOW_VAR* enumerate_sys_vars(THD *thd, bool sorted)
 {
   int count= system_variable_hash.records, i;
-  int fixed_count= fixed_show_vars.elements;
-  int size= sizeof(SHOW_VAR) * (count + fixed_count + 1);
+  int size= sizeof(SHOW_VAR) * (count + 1);
   SHOW_VAR *result= (SHOW_VAR*) thd->alloc(size);
 
   if (result)
   {
-    SHOW_VAR *show= result + fixed_count;
-    memcpy(result, fixed_show_vars.buffer, fixed_count * sizeof(SHOW_VAR));
+    SHOW_VAR *show= result;
 
     for (i= 0; i < count; i++)
     {
@@ -3155,7 +3224,7 @@ SHOW_VAR* enumerate_sys_vars(THD *thd, bool sorted)
 
     /* sort into order */
     if (sorted)
-      my_qsort(result, count + fixed_count, sizeof(SHOW_VAR),
+      my_qsort(result, count, sizeof(SHOW_VAR),
                (qsort_cmp) show_cmp);
     
     /* make last element empty */
@@ -3183,13 +3252,6 @@ int set_var_init()
   
   for (sys_var *var=vars.first; var; var= var->next, count++);
 
-  if (my_init_dynamic_array(&fixed_show_vars, sizeof(SHOW_VAR),
-                            FIXED_VARS_SIZE + 64, 64))
-    goto error;
-
-  fixed_show_vars.elements= FIXED_VARS_SIZE;
-  memcpy(fixed_show_vars.buffer, fixed_vars, sizeof(fixed_vars));
-
   if (hash_init(&system_variable_hash, system_charset_info, count, 0,
                 0, (hash_get_key) get_sys_var_length, 0, HASH_UNIQUE))
     goto error;
@@ -3217,28 +3279,6 @@ int set_var_init()
 void set_var_free()
 {
   hash_free(&system_variable_hash);
-  delete_dynamic(&fixed_show_vars);
-}
-
-
-/*
-  Add elements to the dynamic list of read-only system variables.
-  
-  SYNOPSIS
-    mysql_append_static_vars()
-    show_vars	Pointer to start of array
-    count       Number of elements
-  
-  RETURN VALUES
-    0           SUCCESS
-    otherwise   FAILURE
-*/
-int mysql_append_static_vars(const SHOW_VAR *show_vars, uint count)
-{
-  for (; count > 0; count--, show_vars++)
-    if (insert_dynamic(&fixed_show_vars, (uchar*) show_vars))
-      return 1;
-  return 0;
 }
 
 

sql/set_var.h

@@ -929,6 +929,34 @@ class sys_var_readonly: public sys_var
 };
 
 
+/**
+  Global-only, read-only variable. E.g. command line option.
+*/
+
+class sys_var_const: public sys_var
+{
+public:
+  enum_var_type var_type;
+  SHOW_TYPE show_type_value;
+  uchar *ptr;
+  sys_var_const(sys_var_chain *chain, const char *name_arg, enum_var_type type,
+                SHOW_TYPE show_type_arg, uchar *ptr_arg)
+    :sys_var(name_arg), var_type(type),
+    show_type_value(show_type_arg), ptr(ptr_arg)
+  { chain_sys_var(chain); }
+  bool update(THD *thd, set_var *var) { return 1; }
+  bool check_default(enum_var_type type) { return 1; }
+  bool check_type(enum_var_type type) { return type != var_type; }
+  bool check_update_type(Item_result type) { return 1; }
+  uchar *value_ptr(THD *thd, enum_var_type type, LEX_STRING *base)
+  {
+    return ptr;
+  }
+  SHOW_TYPE show_type() { return show_type_value; }
+  bool is_readonly() const { return 1; }
+};
+
+
 class sys_var_have_option: public sys_var
 {
 protected:
@@ -1317,7 +1345,6 @@ struct sys_var_with_base
 
 int set_var_init();
 void set_var_free();
-int mysql_append_static_vars(const SHOW_VAR *show_vars, uint count);
 SHOW_VAR* enumerate_sys_vars(THD *thd, bool sorted);
 int mysql_add_sys_var_chain(sys_var *chain, struct my_option *long_options);
 int mysql_del_sys_var_chain(sys_var *chain);

sql/slave.cc

@@ -49,6 +49,7 @@
 #define MAX_SLAVE_RETRY_PAUSE 5
 bool use_slave_mask = 0;
 MY_BITMAP slave_error_mask;
+char slave_skip_error_names[SHOW_VAR_FUNC_BUFF_SIZE];
 
 typedef bool (*CHECK_KILLED_FUNC)(THD*,void*);
 
@@ -275,6 +276,64 @@ int init_slave()
 }
 
 
+/**
+  Convert slave skip errors bitmap into a printable string.
+*/
+
+static void print_slave_skip_errors(void)
+{
+  /*
+    To be safe, we want 10 characters of room in the buffer for a number
+    plus terminators. Also, we need some space for constant strings.
+    10 characters must be sufficient for a number plus {',' | '...'}
+    plus a NUL terminator. That is a max 6 digit number.
+  */
+  const int MIN_ROOM= 10;
+  DBUG_ENTER("print_slave_skip_errors");
+  DBUG_ASSERT(sizeof(slave_skip_error_names) > MIN_ROOM);
+  DBUG_ASSERT(MAX_SLAVE_ERROR <= 999999); // 6 digits
+
+  if (!use_slave_mask || bitmap_is_clear_all(&slave_error_mask))
+  {
+    /* purecov: begin tested */
+    memcpy(slave_skip_error_names, STRING_WITH_LEN("OFF"));
+    /* purecov: end */
+  }
+  else if (bitmap_is_set_all(&slave_error_mask))
+  {
+    /* purecov: begin tested */
+    memcpy(slave_skip_error_names, STRING_WITH_LEN("ALL"));
+    /* purecov: end */
+  }
+  else
+  {
+    char *buff= slave_skip_error_names;
+    char *bend= buff + sizeof(slave_skip_error_names);
+    int  errnum;
+
+    for (errnum= 1; errnum < MAX_SLAVE_ERROR; errnum++)
+    {
+      if (bitmap_is_set(&slave_error_mask, errnum))
+      {
+        if (buff + MIN_ROOM >= bend)
+          break; /* purecov: tested */
+        buff= int10_to_str(errnum, buff, 10);
+        *buff++= ',';
+      }
+    }
+    if (buff != slave_skip_error_names)
+      buff--; // Remove last ','
+    if (errnum < MAX_SLAVE_ERROR)
+    {
+      /* Couldn't show all errors */
+      buff= strmov(buff, "..."); /* purecov: tested */
+    }
+    *buff=0;
+  }
+  DBUG_PRINT("init", ("error_names: '%s'", slave_skip_error_names));
+  DBUG_VOID_RETURN;
+}
+
 /*
   Init function to set up array for errors that should be skipped for slave
 
@@ -314,6 +373,8 @@ void init_slave_skip_errors(const char* arg)
     while (!my_isdigit(system_charset_info,*p) && *p)
       p++;
   }
+  /* Convert slave skip errors bitmap into a printable string. */
+  print_slave_skip_errors();
   DBUG_VOID_RETURN;
 }
 

sql/slave.h

@@ -98,6 +98,7 @@ class Master_info;
 
 extern ulong master_retry_count;
 extern MY_BITMAP slave_error_mask;
+extern char slave_skip_error_names[];
 extern bool use_slave_mask;
 extern char *slave_load_tmpdir;
 extern char *master_info_file, *relay_log_info_file;

sql/sql_repl.cc

@@ -1660,64 +1660,38 @@ class sys_var_sync_binlog_period :public sys_var_long_ptr
 
 static sys_var_chain vars = { NULL, NULL };
 
+static sys_var_const    sys_log_slave_updates(&vars, "log_slave_updates",
+                                              OPT_GLOBAL, SHOW_MY_BOOL,
+                                              (uchar*) &opt_log_slave_updates);
+static sys_var_const    sys_relay_log(&vars, "relay_log",
+                                      OPT_GLOBAL, SHOW_CHAR_PTR,
+                                      (uchar*) &opt_relay_logname);
+static sys_var_const    sys_relay_log_index(&vars, "relay_log_index",
+                                      OPT_GLOBAL, SHOW_CHAR_PTR,
+                                      (uchar*) &opt_relaylog_index_name);
+static sys_var_const    sys_relay_log_info_file(&vars, "relay_log_info_file",
+                                      OPT_GLOBAL, SHOW_CHAR_PTR,
+                                      (uchar*) &relay_log_info_file);
 static sys_var_bool_ptr	sys_relay_log_purge(&vars, "relay_log_purge",
 					    &relay_log_purge);
+static sys_var_const    sys_relay_log_space_limit(&vars,
+                                                  "relay_log_space_limit",
+                                                  OPT_GLOBAL, SHOW_LONGLONG,
+                                                  (uchar*)
+                                                  &relay_log_space_limit);
+static sys_var_const    sys_slave_load_tmpdir(&vars, "slave_load_tmpdir",
+                                              OPT_GLOBAL, SHOW_CHAR_PTR,
+                                              (uchar*) &slave_load_tmpdir);
 static sys_var_long_ptr	sys_slave_net_timeout(&vars, "slave_net_timeout",
 					      &slave_net_timeout);
+static sys_var_const    sys_slave_skip_errors(&vars, "slave_skip_errors",
+                                              OPT_GLOBAL, SHOW_CHAR,
+                                              (uchar*) slave_skip_error_names);
 static sys_var_long_ptr	sys_slave_trans_retries(&vars, "slave_transaction_retries",
 						&slave_trans_retries);
 static sys_var_sync_binlog_period sys_sync_binlog_period(&vars, "sync_binlog", &sync_binlog_period);
 static sys_var_slave_skip_counter sys_slave_skip_counter(&vars, "sql_slave_skip_counter");
 
-static int show_slave_skip_errors(THD *thd, SHOW_VAR *var, char *buff);
-
-
-static SHOW_VAR fixed_vars[]= {
-  {"log_slave_updates",       (char*) &opt_log_slave_updates,       SHOW_MY_BOOL},
-  {"relay_log" , (char*) &opt_relay_logname, SHOW_CHAR_PTR},
-  {"relay_log_index", (char*) &opt_relaylog_index_name, SHOW_CHAR_PTR},
-  {"relay_log_info_file", (char*) &relay_log_info_file, SHOW_CHAR_PTR},
-  {"relay_log_space_limit",   (char*) &relay_log_space_limit,       SHOW_LONGLONG},
-  {"slave_load_tmpdir",       (char*) &slave_load_tmpdir,           SHOW_CHAR_PTR},
-  {"slave_skip_errors",       (char*) &show_slave_skip_errors,      SHOW_FUNC},
-};
-
-static int show_slave_skip_errors(THD *thd, SHOW_VAR *var, char *buff)
-{
-  var->type=SHOW_CHAR;
-  var->value= buff;
-  if (!use_slave_mask || bitmap_is_clear_all(&slave_error_mask))
-  {
-    var->value= const_cast<char *>("OFF");
-  }
-  else if (bitmap_is_set_all(&slave_error_mask))
-  {
-    var->value= const_cast<char *>("ALL");
-  }
-  else
-  {
-    /* 10 is enough assuming errors are max 4 digits */
-    int i;
-    var->value= buff;
-    for (i= 1;
-         i < MAX_SLAVE_ERROR &&
-         (buff - var->value) < SHOW_VAR_FUNC_BUFF_SIZE;
-         i++)
-    {
-      if (bitmap_is_set(&slave_error_mask, i))
-      {
-        buff= int10_to_str(i, buff, 10);
-        *buff++= ',';
-      }
-    }
-    if (var->value != buff)
-      buff--;				// Remove last ','
-    if (i < MAX_SLAVE_ERROR)
-      buff= strmov(buff, "...");  // Couldn't show all errors
-    *buff=0;
-  }
-  return 0;
-}
 
 bool sys_var_slave_skip_counter::check(THD *thd, set_var *var)
 {
@@ -1765,8 +1739,6 @@ bool sys_var_sync_binlog_period::update(THD *thd, set_var *var)
 
 int init_replication_sys_vars()
 {
-  mysql_append_static_vars(fixed_vars, sizeof(fixed_vars) / sizeof(SHOW_VAR));
-
   if (mysql_add_sys_var_chain(vars.first, my_long_options))
   {
     /* should not happen */