GitLab

according to the standard.

The idea is to use Field-classes to implement stored routines
variables. Also, we should provide facade to Item-hierarchy
by Item_field class (it is necessary, since SRVs take part
in expressions).

The patch fixes the following bugs:
  - BUG#8702: Stored Procedures: No Error/Warning shown for inappropriate data 
    type matching; 
 
  - BUG#8768: Functions: For any unsigned data type, -ve values can be passed 
    and returned; 
 
  - BUG#8769: Functions: For Int datatypes, out of range values can be passed 
    and returned; 
 
  - BUG#9078: STORED PROCDURE: Decimal digits are not displayed when we use 
    DECIMAL datatype; 
 
  - BUG#9572: Stored procedures: variable type declarations ignored; 
 
  - BUG#12903: upper function does not work inside a function; 
 
  - BUG#13705: parameters to stored procedures are not verified; 
 
  - BUG#13808: ENUM type stored procedure parameter accepts non-enumerated
    data; 
 
  - BUG#13909: Varchar Stored Procedure Parameter always BINARY string (ignores 
    CHARACTER SET); 
 
  - BUG#14161: Stored procedure cannot retrieve bigint unsigned;

  - BUG#14188: BINARY variables have no 0x00 padding;

  - BUG#15148: Stored procedure variables accept non-scalar values;


mysql-test/r/ctype_ujis.result:
  Explicitly specify correct charset.
mysql-test/r/schema.result:
  Drop our test database to not affect this test if some test
  left it cause of failure.
mysql-test/r/show_check.result:
  Drop our test database to not affect this test if some test
  left it cause of failure.
mysql-test/r/skip_name_resolve.result:
  Ignore columns with unpredictable values.
mysql-test/r/sp-big.result:
  Add cleanup statement.
mysql-test/r/sp-dynamic.result:
  Add cleanup statements.
mysql-test/r/sp.result:
  Update result file.
mysql-test/r/sum_distinct-big.result:
  Update result file.
mysql-test/r/type_newdecimal-big.result:
  Update result file.
mysql-test/t/ctype_ujis.test:
  Explicitly specify correct charset.
mysql-test/t/schema.test:
  Drop our test database to not affect this test if some test
  left it cause of failure.
mysql-test/t/show_check.test:
  Drop our test database to not affect this test if some test
  left it cause of failure.
mysql-test/t/skip_name_resolve.test:
  Ignore columns with unpredictable values.
mysql-test/t/sp-big.test:
  Add cleanup statement.
mysql-test/t/sp-dynamic.test:
  Add cleanup statements.
mysql-test/t/sp.test:
  Non-scalar values prohibited for assignment to SP-vars;
  polishing.
mysql-test/t/type_newdecimal-big.test:
  Update type specification so that the variables
  can contain the large values used in the test.
sql/field.cc:
  Extract create_field::init() to initialize an existing
  instance of create_field from new_create_field().
sql/field.h:
  Extract create_field::init() to initialize an existing
  instance of create_field from new_create_field().
sql/item.cc:
  - Introduce a new class: Item_sp_variable -- a base class
    of stored-routine-variables classes;
  - Introduce Item_case_expr -- an Item, which is used to access
    to the expression of CASE statement;
sql/item.h:
  - Introduce a new class: Item_sp_variable -- a base class
    of stored-routine-variables classes;
  - Introduce Item_case_expr -- an Item, which is used to access
    to the expression of CASE statement;
sql/item_func.cc:
  Pass the Field (instead of Item) for the return value of
  a function to the function execution routine.
sql/item_func.h:
  Pass the Field (instead of Item) for the return value of
  a function to the function execution routine.
sql/mysql_priv.h:
  Move create_virtual_tmp_table() out of sql_select.h.
sql/sp.cc:
  Use create_result_field() instead of make_field().
sql/sp_head.cc:
  - Add a function to map enum_field_types to Item::Type;
  - Add sp_instr_push_case_expr instruction -- an instruction
    to push CASE expression into the active running context;
  - Add sp_instr_pop_case_expr instruction -- an instruction
    to pop CASE expression from the active running context;
  - Adapt the SP-execution code to using Fields instead of Items
    for SP-vars;
  - Use create_field structure for field description instead of
    a set of members.
sql/sp_head.h:
  - Add a function to map enum_field_types to Item::Type;
  - Add sp_instr_push_case_expr instruction -- an instruction
    to push CASE expression into the active running context;
  - Add sp_instr_pop_case_expr instruction -- an instruction
    to pop CASE expression from the active running context;
  - Adapt the SP-execution code to using Fields instead of Items
    for SP-vars;
  - Use create_field structure for field description instead of
    a set of members.
sql/sp_pcontext.cc:
  - Change rules to assign an index of SP-variable: use
    transparent index;
  - Add an operation to retrieve a list of defined SP-vars
    from the processing context recursively.
sql/sp_pcontext.h:
  - Change rules to assign an index of SP-variable: use
    transparent index;
  - Add an operation to retrieve a list of defined SP-vars
    from the processing context recursively.
sql/sp_rcontext.cc:
  - Change rules to assign an index of SP-variable: use
    transparent index;
  - Use a tmp virtual table to store SP-vars instead of Items;
  - Provide operations to work with CASE expresion.
sql/sp_rcontext.h:
  - Change rules to assign an index of SP-variable: use
    transparent index;
  - Use a tmp virtual table to store SP-vars instead of Items;
  - Provide operations to work with CASE expresion.
sql/sql_class.cc:
  - Reflect Item_splocal ctor changes;
  - Item_splocal::get_offset() has been renamed to get_var_idx().
sql/sql_class.h:
  Polishing.
sql/sql_parse.cc:
  Extract create_field::init() to initialize an existing
  instance of create_field from new_create_field().
sql/sql_select.cc:
  Take care of BLOB columns in create_virtual_tmp_table().
sql/sql_select.h:
  Move create_virtual_tmp_table() out of sql_select.h.
sql/sql_trigger.cc:
  Use boolean constants for boolean type instead of numerical ones.
sql/sql_yacc.yy:
  Provide an instance of create_field for each SP-var.
mysql-test/include/sp-vars.inc:
  The definitions of common-procedures, which are created
  under different circumstances.
mysql-test/r/sp-vars.result:
  Result file for the SP-vars test.
mysql-test/sp-vars.test:
  A new test for checking SP-vars functionality.

sql/item_func.cc:
  Fix for bug #12956: cast make differ rounding.
  - call rint() as we do in the Field_*int*::store(double)

client/mysqltest.c:
  An expected error messages hiding from the log if disable_result_log is in force.
mysql-test/r/sp-dynamic.result:
  The test expanded for case of allowed/disalowed recursion.
mysql-test/r/sp-error.result:
  Error messages changed.
  Test of bug11394() made with allowed recursion.
mysql-test/r/sp.result:
  Tests for recursion.
mysql-test/r/trigger.result:
  Check that triggers are not affected by this patch.
mysql-test/r/variables.result:
  Test of max_sp_recursion_depth variable.
mysql-test/t/sp-dynamic.test:
  The test expanded for case of allowed/disalowed recursion.
mysql-test/t/sp-error.test:
  Error messages changed.
  Test of bug11394() made with allowed recursion.
mysql-test/t/sp.test:
  Tests for recursion.
mysql-test/t/trigger.test:
  Check that triggers are not affected by this patch.
mysql-test/t/variables.test:
  Test of max_sp_recursion_depth variable.
sql/item_func.cc:
  sp_find_function() and sp_find_procedure() joined to sp_find_routine()
    function as it was mentioned in TODO.
sql/mysqld.cc:
  max_sp_recursion_depth variable added.
sql/set_var.cc:
  max_sp_recursion_depth variable added.
sql/share/errmsg.txt:
  An error message changed.
  An error message added.
sql/sp.cc:
  sp_find_function() and sp_find_procedure() joined to sp_find_routine()
    function as it was mentioned in TODO.
  Temory LEX is allocated on a stack, not on a heap.
  Recursion support added for stored procedures.
sql/sp.h:
  sp_find_function() and sp_find_procedure() joined to sp_find_routine()
    function as it was mentioned in TODO.
sql/sp_head.cc:
  Initialization of new sp_head fields to get correct list of instances
    contained one instance only.
  Stack requirement for SP instruction is increased.
  Stack free space is checked before mem root initialisation to avoid
    memory leak.
  Pointer to the free instance management added before and after
    SP execution.
sql/sp_head.h:
  New sp_head variables added to support inst of instances of SP
    for recursion and pointer on ths first free to use instance.
sql/sql_base.cc:
  open_table() consume a lot of stack space so we check free stack space before it.
sql/sql_class.h:
  max_sp_recursion_depth variable added.
sql/sql_parse.cc:
  sp_find_function() and sp_find_procedure() joined to sp_find_routine()
    function as it was mentioned in TODO.

Bad examples of usage of a string with its length fixed.
The incorrect length in the trigger file configuration descriptor
  fixed (BUG#14090).
A hook for unknown keys added to the parser to support old .TRG files.


sql/field.cc:
  Inefficient usage of String::append() fixed.
  Bad examples of usage of a string with its length fixed.
sql/ha_berkeley.cc:
  A bad example of usage of a string with its length fixed.
sql/ha_federated.cc:
  Inefficient usage of String::append() fixed.
sql/ha_myisammrg.cc:
  Bad examples of usage of a string with its length fixed.
sql/handler.cc:
  Inefficient usage of String::append() fixed.
sql/item.cc:
  Bad examples of usage of a string with its length fixed.
sql/item.h:
  A bad example of usage of a string with its length fixed.
sql/item_cmpfunc.cc:
  Bad examples of usage of a string with its length fixed.
sql/item_func.cc:
  Bad examples of usage of a string with its length fixed.
sql/item_strfunc.cc:
  Bad examples of usage of a string with its length fixed.
sql/item_subselect.cc:
  Bad examples of usage of a string with its length fixed.
sql/item_sum.cc:
  Bad examples of usage of a string with its length fixed.
  Inefficient usage of String::append() fixed.
sql/item_timefunc.cc:
  Inefficient using of String::append() fixed.
  Bad examples of usage of a string with its length fixed.
sql/item_uniq.h:
  Bad examples of usage of a string with its length fixed.
sql/key.cc:
  Bad examples of usage of a string with its length fixed.
sql/log.cc:
  Bad examples of usage of a string with its length fixed.
sql/log_event.cc:
  Bad examples of usage of a string with its length fixed.
sql/mysqld.cc:
  The dummy parser hook allocated.
sql/opt_range.cc:
  Inefficient usage of String::append() fixed.
sql/parse_file.cc:
  Bad examples of usage of a string with its length fixed.
  A hook for unknown keys added to the parser.
sql/parse_file.h:
  A hook for unknown keys added to the parser.
sql/protocol.cc:
  A bad example of usage of a string with its length fixed.
sql/repl_failsafe.cc:
  Bad examples of usage of a string with its length fixed.
sql/share/errmsg.txt:
  A warning for old format config file.
sql/slave.cc:
  Bad examples of usage of a string with its length fixed.
sql/sp.cc:
  Bad examples of usage of a string with its length fixed.
sql/sp_head.cc:
  Bad examples of usage of a string with its length fixed.
sql/spatial.cc:
  A bad example of usage of a string with its length fixed.
sql/sql_acl.cc:
  Bad examples of usage of a string with its length fixed.
sql/sql_analyse.cc:
  Bad examples of usage of a string with its length fixed.
  Inefficient usage of String::append() fixed.
sql/sql_lex.cc:
  Bad examples of usage of a string with its length fixed.
sql/sql_load.cc:
  A bad example of usage of a string with its length fixed.
sql/sql_parse.cc:
  Bad examples of usage of a string with its length fixed.
sql/sql_prepare.cc:
  A bad example of usage of a string with its length fixed.
sql/sql_select.cc:
  Bad examples of usage of a string with its length fixed.
sql/sql_show.cc:
  Bad examples of usage of a string with its length fixed.
sql/sql_string.cc:
  Bad examples of usage of a string with its length fixed.
sql/sql_string.h:
  The macro definition moved to sql_string.h to
    be accessible in all parts of server.
sql/sql_table.cc:
  Bad examples of usage of a string with its length fixed.
sql/sql_trigger.cc:
  Bad examples of usage of a string with its length fixed.
  The incorrect length in the trigger file configuration descriptor
    fixed (BUG#14090).
  The hook for processing incorrect sql_mode record added.
sql/sql_view.cc:
  A dummy  hook used for parsing views.
sql/structs.h:
  The macro definition moved to sql_string.h to be
    accessible in all parts of server.
sql/table.cc:
  A bad example of usage of a string with its length fixed.
sql/tztime.cc:
  A bad example of usage of a string with its length fixed.

checks on trigger activation)


mysql-test/r/information_schema.result:
  Update result file: a new column DEFINER has been added to
  INFORMATION_SCHEMA.TRIGGERS.
mysql-test/r/mysqldump.result:
  Update result file: a new column DEFINER has been added to
  INFORMATION_SCHEMA.TRIGGERS.
mysql-test/r/rpl_ddl.result:
  Update result file: a new column DEFINER has been added to
  INFORMATION_SCHEMA.TRIGGERS.
mysql-test/r/rpl_sp.result:
  Update result file: a new clause DEFINER has been added to
  CREATE TRIGGER statement.
mysql-test/r/rpl_trigger.result:
  Results for new test cases were added.
mysql-test/r/skip_grants.result:
  Error message has been changed.
mysql-test/r/trigger.result:
  Added DEFINER column.
mysql-test/r/view.result:
  Error messages have been changed.
mysql-test/r/view_grant.result:
  Error messages have been changed.
mysql-test/t/mysqldump.test:
  Drop created procedure to not affect further tests.
mysql-test/t/rpl_trigger.test:
  Add tests for new column in information schema.
mysql-test/t/skip_grants.test:
  Error tag has been renamed.
mysql-test/t/view.test:
  Error tag has been renamed.
mysql-test/t/view_grant.test:
  Error tag has been changed.
sql/item_func.cc:
  Fix typo in comments.
sql/mysql_priv.h:
  A try to minimize copy&paste:
    - introduce operations to be used from sql_yacc.yy;
    - introduce an operation to be used from trigger and
      view processing code.
sql/share/errmsg.txt:
  - Rename ER_NO_VIEW_USER to ER_MALFORMED_DEFINER in order to
    be shared for view and trigger implementations;
  - Fix a typo;
  - Add a new error code for trigger warning.
sql/sp.cc:
  set_info() was split into set_info() and set_definer().
sql/sp_head.cc:
  set_info() was split into set_info() and set_definer().
sql/sp_head.h:
  set_info() was split into set_info() and set_definer().
sql/sql_acl.cc:
  Add a new check: exit from the cycle if the table is NULL.
sql/sql_lex.h:
  - Rename create_view_definer to definer, since it is used for views
    and triggers;
  - Change st_lex_user to LEX_USER, since st_lex_user is a structure.
    So, formally, it should be "struct st_lex_user", which is longer
    than just LEX_USER;
  - Add trigger_definition_begin.
sql/sql_parse.cc:
  - Add a new check: exit from the cycle if the table is NULL;
  - Implement definer-related functions.
sql/sql_show.cc:
  Add DEFINER column.
sql/sql_trigger.cc:
  Add DEFINER support for triggers.
sql/sql_trigger.h:
  Add DEFINER support for triggers.
sql/sql_view.cc:
  Rename create_view_definer to definer.
sql/sql_yacc.yy:
  Add support for DEFINER-clause in CREATE TRIGGER statement.
  
  Since CREATE TRIGGER and CREATE VIEW can be similar at the start,
  yacc is unable to distinguish between them. So, had to modify both
  statements in order to make it parsable by yacc.
mysql-test/r/trigger-compat.result:
  Result file for triggers backward compatibility test.
mysql-test/r/trigger-grant.result:
  Result file of the test for WL#2818.
mysql-test/t/trigger-compat.test:
  Triggers backward compatibility test: check that the server
  still can load triggers w/o definer attribute and modify
  tables with such triggers (add a new trigger, etc).
mysql-test/t/trigger-grant.test:
  Test for WL#2818 -- check that DEFINER support in triggers
  works properly

Indeed now that stored procedures CALL is not binlogged, but instead the invoked substatements are,
the restrictions applied by log-bin-trust-routine-creators=0 are superfluous for procedures.
They still need to apply to functions where function calls are written to the binlog (for example as "DO myfunc(3)").
We rename the variable to log-bin-trust-function-creators but allow the old name until some future version (and issue a warning if old name is used).


mysql-test/mysql-test-run.pl:
  update to new option name
mysql-test/mysql-test-run.sh:
  update to new option name
mysql-test/mysql_test_run_new.c:
  update to new option name
mysql-test/r/rpl_sp.result:
  result update
mysql-test/t/rpl_sp-slave.opt:
  we need to skip this error to not hit BUG#14769
mysql-test/t/rpl_sp.test:
  Test update:
  1) as log-bin-trust-routine-creators now affects only functions, the testing of this option, which was
  mainly done on procedures, is moved to functions
  2) cleanup is simplified; and instead of many SHOW BINLOG EVENTS we do a big one in the end, which is more
  maintainable.
  3) we test a few more function and procedures cases to see how they replicate.
  4) removing out-of-date comments
sql/item_func.cc:
  This warning is wrong since binlogging of functions was changed in August. If a function fails
  in the middle, it will be binlogged with its error code (i.e. properly).
sql/mysql_priv.h:
  variable name changed
sql/mysqld.cc:
  option name changes. A precision about --read-only.
sql/set_var.cc:
  a new class sys_var_trust_routine_creators to be able to issue a "this is a deprecated variable" warning if used.
sql/set_var.h:
  new class to be able to issue a "this is a deprecated variable" warning if used.
sql/share/errmsg.txt:
  routine -> function
sql/sp.cc:
  log-bin-trust-routine-creators now applies only to functions.
sql/sql_parse.cc:
  1) sending ER_FAILED_ROUTINE_BREAK_BINLOG is wrong since August as we don't binlog CALL anymore but instead binlog the substatements;
  the clear_error() goes away too as it was necessary only when we created a binlog event from the "CALL" statement.
  2) log-bin-trust-routine-creators now applies only to functions.
sql/sql_trigger.cc:
  comments.

transaction while holding the lock. Also test to make sure other binlogging issues
reported in the bug have been addressed.


sql/item_func.cc:
  fix for BUG#7947
mysql-test/r/rpl_bug7947.result:
  New BitKeeper file ``mysql-test/r/rpl_bug7947.result''
mysql-test/t/rpl_bug7947.test:
  New BitKeeper file ``mysql-test/t/rpl_bug7947.test''

Optimize new pushed code


sql/item_func.cc:
  Fixed wrong merge
sql/sql_update.cc:
  Optimize new pushed code
  (There is no reason to add extra test for not common error case if code can handle it anyway)

Fix for bug #14536: SELECT @A,@A:=... fails with prepared statements


mysql-test/r/func_sapdb.result:
  Correct tests after reverting patch for BUG #14009 (use of abs() on null value causes problems with filesort)
mysql-test/r/type_newdecimal.result:
  Correct tests after reverting patch for BUG #14009 (use of abs() on null value causes problems with filesort)
mysql-test/r/user_var.result:
  More test with SELECT @A:=
mysql-test/t/disabled.def:
  Enable user_var.test for
mysql-test/t/user_var.test:
  More test with SELECT @A:=
sql/item.cc:
  Simple optimization during review of new code
sql/item_func.cc:
  Reverting patch for BUG #14009 (use of abs() on null value causes problems with filesort)
sql/item_timefunc.h:
  timediff() can return NULL for not NULL arguments
sql/sql_base.cc:
  Remove usage of current_thd() in mysql_make_view()
sql/sql_lex.h:
  Remove usage of current_thd() in mysql_make_view()
sql/sql_select.cc:
  Fix for bug #14536: SELECT @A,@A:=... fails with prepared statements
sql/sql_view.cc:
  Remove usage of current_thd() in mysql_make_view()
  Simple optimization of new code
sql/sql_view.h:
  Remove usage of current_thd() in mysql_make_view()
sql/table.cc:
  Simple optimization of new code

Removed wrong fix for bug #14009 (use of abs() on null value causes problems with filesort)
Mark that add_time(), time_diff() and str_to_date() can return null values


myisam/mi_check.c:
  keyoffset is not a position (no %lx here)
mysql-test/r/func_sapdb.result:
  Fixed test after marking that timediff() can return NULL
sql/item_func.cc:
  Removed wrong fix for bug #14009 (use of abs() on null value causes problems with filesort)
sql/item_timefunc.cc:
  Mark that add_time and str_to_date() can return null values
sql/item_timefunc.h:
  Mark that time_diff can return 0
sql/spatial.cc:
  Simple cleanups during review of new code

sql/item_func.cc:
  some optimisation
sql/sql_acl.cc:
  some optimisation
sql/sql_base.cc:
  some optimisation
sql/sql_parse.cc:
  some optimisation
sql/table.cc:
  some optimisation

sql/item_func.cc:
  fixed typo
sql/sql_acl.cc:
  comment fixed
sql/sql_parse.cc:
  comment fixed
sql/sql_view.cc:
  layout fixed
sql/table.cc:
  typo fixed
  layout fixed
sql/table.h:
  typo fixed

mysql-test/r/information_schema.result:
  error message changed
mysql-test/r/sp.result:
  error message changed
mysql-test/r/sql_mode.result:
  fixed test suite
mysql-test/r/view.result:
  error message changed
mysql-test/r/view_grant.result:
  test of underlying view tables check
mysql-test/t/sql_mode.test:
  fixed test suite
mysql-test/t/view_grant.test:
  test of underlying view tables check
sql/item.cc:
  check of underlying tables privilege added
sql/item.h:
  Name the resolution context points to the security  context of view (if item belong to the view)
sql/item_func.cc:
  a view error hiding for execution of prepared function belonged to a view
  fixed checking privileges if stored functions belonds to some view
sql/mysql_priv.h:
  refult of derived table processing functions changed to bool
  Security_context added as an argument to find_field_in_table()
sql/share/errmsg.txt:
  error message fixed
sql/sq...

Cleaned up xxxx_gis.test's and made gis_generic.inc independent of ndb
(Note that archive_gis.test fails, but this is independent of this patch)


client/mysqldump.c:
  Add DROP TABLE to be able to re-run mysqldump if it fails after 'table-named-as-view' is created
mysql-test/include/gis_generic.inc:
  Remove dependency of ndb
mysql-test/include/have_archive.inc:
  Fix syntax
mysql-test/include/have_geometry.inc:
  Fix syntax
mysql-test/r/mysqldump.result:
  New test results after adding 'drop table'
mysql-test/t/archive_gis.test:
  gis_generic tests for have_geometry.inc
mysql-test/t/bdb_gis.test:
  gis_generic tests for have_geometry.inc
mysql-test/t/innodb_gis.test:
  gis_generic tests for have_geometry.inc
mysql-test/t/ndb_gis.test:
  gis_generic tests for have_geometry.inc
sql/item_func.cc:
  Simplify code (as signal_divide_by_null sets 'null_value')

sql/item_func.cc:
  don't return NULL when we got E_DEC_OVERFLOW

mysql-test/my_manage.c:
  Avoid warning: i not used in case of Windows.
mysql-test/mysql_test_run_new.c:
  Removed unused variable.
sql/item_func.cc:
  Removed unused variables.
strings/ctype-simple.c:
  Added cast.
strings/ctype-ucs2.c:
  Added cast.

mysql-test/r/func_math.result:
  Add new results
mysql-test/t/func_math.test:
  Add new regression test
sql/item_func.cc:
  Set maybe_null in Item_func_abs::fix_length_and_dec().

mysql-test/r/func_math.result:
  result fixed
mysql-test/t/func_math.test:
  test case added
sql/item_func.cc:
  tests for (value<=0.0) added to LOG* functions

allowed set functions aggregated in outer subqueries, allowed nested set functions.


mysql-test/r/func_gconcat.result:
  Changed a query when fixing bug #12762.
mysql-test/r/subselect.result:
  Added test cases for bug #12762.
  Allowed set functions aggregated in outer subqueries. Allowed nested set functions.
mysql-test/t/func_gconcat.test:
  Changed a query when fixing bug #12762.
mysql-test/t/subselect.test:
  Added test cases for bug #12762.
  Allowed set functions aggregated in outer subqueries. Allowed nested set functions.
sql/item.cc:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Added a parameter to Item::split_sum_func2 aliowing to defer splitting for set functions
  aggregated in outer subquries.
  Changed Item_field::fix_fields to calculate attributes used when checking context conditions
  for set functions.
  Allowed alliases for set functions defined in outer subqueries.
sql/item.h:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Added a parameter to Item::split_sum_func2 aliowing to defer splitting for set functions
  aggregated in outer subquries.
sql/item_cmpfunc.cc:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Added a parameter to Item::split_sum_func2 aliowing to defer splitting for set functions
  aggregated in outer subquries.
sql/item_func.cc:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Added a parameter to Item::split_sum_func2 aliowing to defer splitting for set functions
  aggregated in outer subquries.
sql/item_row.cc:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Added a parameter to Item::split_sum_func2 aliowing to defer splitting for set functions
  aggregated in outer subquries.
sql/item_strfunc.cc:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Added a parameter to Item::split_sum_func2 aliowing to defer splitting for set functions
  aggregated in outer subquries.
sql/item_subselect.cc:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Introduced next levels for subqueries and a bitmap of nesting levels showing
  in what subqueries a set function can be aggregated.
sql/item_sum.cc:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Added Item_sum methods to check context conditions imposed on set functions.
sql/item_sum.h:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Added Item_sum methods to check context conditions imposed on set functions.
sql/mysql_priv.h:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Introduced a type of bitmaps to be used for nesting constructs.
sql/sql_base.cc:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Introduced next levels for subqueries and a bitmap of nesting levels showing
  in what subqueries a set function can be aggregated.
sql/sql_class.cc:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Introduced a bitmap of nesting levels showing in what subqueries a set function can be aggregated.
sql/sql_class.h:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Introduced a bitmap of nesting levels showing in what subqueries a set function can be aggregated.
sql/sql_delete.cc:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Introduced a bitmap of nesting levels showing in what subqueries a set function can be aggregated.
sql/sql_lex.cc:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Introduced next levels for subqueries and a bitmap of nesting levels showing
  in what subqueries a set function can be aggregated.
sql/sql_lex.h:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Introduced next levels for subqueries and a bitmap of nesting levels showing
  in what subqueries a set function can be aggregated.
sql/sql_parse.cc:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Introduced next levels for subqueries.
sql/sql_prepare.cc:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Introduced a bitmap of nesting levels showingin what subqueries a set function can be aggregated.
sql/sql_select.cc:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Introduced next levels for subqueries and a bitmap of nesting levels showing
  in what subqueries a set function can be aggregated.
sql/sql_update.cc:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Introduced a bitmap of nesting levels showing in what subqueries a set function can be aggregated.
sql/sql_yacc.yy:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Introduced next levels for subqueries.

mysql-test/r/type_newdecimal.result:
  result fixed
mysql-test/t/type_newdecimal.test:
  test case added
sql/item_func.cc:
  conditions fixed
sql/my_decimal.cc:
  overflow handling added
sql/my_decimal.h:
  overflow handling added - so the result of operation gets maximum possible
  decimal value

- CHAR() now returns binary string as default
- CHAR(X*65536+Y*256+Z) is now equal to CHAR(X,Y,Z) independent of the character set for CHAR()
- Test for both ETIMEDOUT and ETIME from pthread_cond_timedwait()
  (Some old systems returns ETIME and it's safer to test for both values
   than to try to write a wrapper for each old system)
- Fixed new introduced bug in NOT BETWEEN X and X
- Ensure we call commit_by_xid or rollback_by_xid for all engines, even if one engine has failed
- Use octet2hex() for all conversion of string to hex
- Simplify and optimize code


client/mysqldump.c:
  Simple optimizations of new code
  Indentation fixes
client/mysqltest.c:
  Removed not needed variable
include/mysql_com.h:
  Made octec2hex() more usable
mysql-test/r/ctype_utf8.result:
  CHAR() now returns binary string as default
mysql-test/r/func_str.result:
  CHAR() now returns binary string as default
mysql-test/r/range.result:
  Added test to verify new introduced bug in NOT BETWEEN X and X
mysql-test/r/user_var-binlog.result:
  CHAR() now returns binary string as default
mysql-test/r/view.result:
  More tests of view rename
mysql-test/t/ctype_utf8.test:
  CHAR() now returns binary string as default
mysql-test/t/func_str.test:
  CHAR() now returns binary string as default
mysql-test/t/range.test:
  Added test to verify new introduced bug in NOT BETWEEN X and X
mysql-test/t/view.test:
  More tests of view rename
mysys/mf_keycache.c:
  Indentation changes
  Test for both ETIMEDOUT and ETIME from pthread_cond_timedwait()
mysys/my_os2cond.c:
  Fix to MySQL coding style
  Optimized functions
mysys/thr_lock.c:
  Test for both ETIMEDOUT and ETIME from pthread_cond_timedwait()
mysys/thr_mutex.c:
  Test for both ETIMEDOUT and ETIME from pthread_cond_timedwait()
server-tools/instance-manager/instance.cc:
  Test for both ETIMEDOUT and ETIME from pthread_cond_timedwait()
server-tools/instance-manager/thread_registry.cc:
  Test for both ETIMEDOUT and ETIME from pthread_cond_timedwait()
sql/ha_federated.cc:
  Use octet2hex()
sql/ha_ndbcluster.cc:
  Removed not used variable
sql/handler.cc:
  Simplify code
  Use *NONE* instead of 'none' for not existing storage engine
  Ensure we call commit_by_xid or rollback_by_xid for all engines, even if one engine has failed
sql/item.h:
  Remove not needed test for *ref.  (If ref is set, it should never point at 0)
sql/item_func.cc:
  Test for both ETIMEDOUT and ETIME from pthread_cond_timedwait()
  Simplify code
  More comments
  Require that last argument to find_and_check_access() is given
  (Made code shorter and faster)
sql/item_strfunc.cc:
  Changed CHAR() to return result in binary collation
  CHAR(X*65536+Y*256+Z) is now equal to CHAR(X,Y,Z) independent of the character set for CHAR()
  
  Bar will shortly add the following syntax:
  CHAR(.... USING character_set)
  and ensure that
  CONVERT(CHAR(....) USING utf8) cuts not legal utf8 strings
  Use ocet2hex()
sql/item_strfunc.h:
  CHAR() now returns a binary string
sql/log_event.cc:
  Use octet2hex()
  Simplify code
sql/parse_file.cc:
  Indentation fixes
  Use for() instead of while()
sql/password.c:
  Make octet2hex() more generally usable by returning pointer to end 0
sql/slave.cc:
  Test for both ETIMEDOUT and ETIME from pthread_cond_timedwait()
sql/sql_base.cc:
  Indentation fixes
sql/sql_insert.cc:
  Test for both ETIMEDOUT and ETIME from pthread_cond_timedwait()
sql/sql_manager.cc:
  Test for both ETIMEDOUT and ETIME from pthread_cond_timedwait()
sql/sql_parse.cc:
  Don't check thd->db when checking for function privileges
sql/sql_prepare.cc:
  Fixed wrong merge
sql/sql_select.cc:
  Fixed new bug for NOT BETWEEN X and X
sql/sql_show.cc:
  Removed not used variable
sql/sql_table.cc:
  Indentation fixed
  Removed DBUG_PRINT that is obvious from context
sql/sql_view.cc:
  Simplify code
sql/unireg.cc:
  Use octet2hex()

  Adding test case.
item_func.cc:
  Bug#13751 find_in_set: Illegal mix of collations.
  Character set conversion was forgotten in find_in_set.


sql/item_func.cc:
  Bug#13751 find_in_set: Illegal mix of collations.
  Character set conversion was forgotten in find_in_set.
mysql-test/t/ctype_utf8.test:
  Adding test case.
mysql-test/r/ctype_utf8.result:
  Adding test case.

Ensure that ccache is also used for C programs
mysql: Ensure that 'delimiter' works the same way in batch mode as in normal mode
mysqldump: Change to use ;; (instead of //) as a stored procedure/trigger delimiter
Fixed test cases by adding missing DROP's and rename views to be of type 'v#'
Removed MY_UNIX_PATH from fn_format()
Removed current_db_used from TABLE_LIST
Removed usage of 'current_thd' in Item_splocal
Removed some compiler warnings
A bit faster longlong2str code



BUILD/FINISH.sh:
  Ensure that ccache is also used for C programs
BUILD/SETUP.sh:
  Ensure that ccache is also used for C programs
client/mysql.cc:
  More debugging
  Ensure that 'delimiter' works the same way in batch mode as in normal mode.
  Compare 'delimiter' command case-insensitive.
  The above fixes the delimiter bugs so that we can now use ;; as a trigger/SP function delimiter in mysqldump.
client/mysqldump.c:
  Indentation fixes
  Use ;; as a delmimiter for stored procedures and tri...

  remove extra ";" after function


sql/item_func.cc:
  remove extra ";" after function

libmysqld/lib_sql.cc:
  struct st_security_context nad to class Security_context
sql/item_func.cc:
  fixed method call, name and contence to be compatible with new code
sql/item_func.h:
  fixed method to be compatible wit new code
sql/sql_parse.cc:
  fixed typo
  removed compiler warnings

WL#2787 (Add view definer/owner to the view definition (.frm) to check privileges on used tables and stored routines when using a VIEW.)
Part 2 postreview fixes.


sql/ha_innodb.cc:
  Renamed structure st_security_context to class Security_context
sql/item_func.cc:
  Renamed structure st_security_context to class Security_context
sql/item_strfunc.cc:
  fixed USER() function
sql/log.cc:
  variable used to optimize access to security context
sql/mysql_priv.h:
  Renamed structure st_security_context to class Security_context
sql/mysqld.cc:
  main security context used direcly
sql/sp_head.cc:
  Renamed structure st_security_context to class Security_context
  removed unneed variable
sql/sp_head.h:
  Comment inmroved
  Renamed structure st_security_context to class Security_context
sql/sql_acl.cc:
  Renamed structure st_security_context to class Security_context
  fixed function comment and return value
  variable used to optimize access to security context
  Renamed method of Security_ontext
sql/sql_acl.h:
  fixed return value type
sql/sql_class.cc:
  Renamed structure st_security_context to class Security_context
sql/sql_class.h:
  Renamed structure st_security_context to class Security_context
  Method renamed
sql/sql_db.cc:
  Renamed structure st_security_context to class Security_context
  fixed layout
sql/sql_parse.cc:
  registration of wanted access for underlying tables
sql/sql_show.cc:
  Renamed structure st_security_context to class Security_context
  fixed layout
sql/sql_yacc.yy:
  Renamed structure st_security_context to class Security_context

  Fixed mistake in fix for bug#12812


sql/item_func.cc:
  Fixed mistake in fix for bug#12812

Execution rigths on function was checked just before function execution,
thus it was unknown on prepare stage whether user have right to execute 
particular function.

Added access rights checking function which is called right after fixing
Item_func_sp.
This have additional effect that if user don't have rights for execution
query will fail on earlier stage and will not waste resources on optimizing
with failing on execution stage.


sql/item_func.h:
  Fix bug#12812 create view calling a function works without execute right on function
sql/item_func.cc:
  Fix bug#12812 create view calling a function works without execute right on function
  Added function Item_func_sp::check_access() which checks access rights.
  Added function Item_func_sp::fix_field() which calls check_access() after fixing.
  Item_func_sp::execute() now calls to check_access() to check access rights.
mysql-test/t/sp.test:
  Test case for bug#12812 create view calling a function works without execute right on function
mysql-test/r/sp.result:
  Test case for bug#12812 create view calling a function works without execute right on function

libmysqld/lib_sql.cc:
  changed securety context switching
mysql-test/r/rpl_sp.result:
  now it show real information from changed security context of SP (checked)
sql/ha_innodb.cc:
  changed securety context switching
sql/item.cc:
  changed securety context switching
sql/item_func.cc:
  changed securety context switching
sql/item_strfunc.cc:
  changed securety context switching
sql/log.cc:
  changed securety context switching
sql/mysql_priv.h:
  changed securety context switching
sql/mysqld.cc:
  changed securety context switching
sql/repl_failsafe.cc:
  changed securety context switching
sql/set_var.cc:
  changed securety context switching
sql/slave.cc:
  changed securety context switching
sql/sp.cc:
  changed securety context switching
sql/sp_head.cc:
  changed securety context switching
  in case of inability to switch context  we return error now
sql/sp_head.h:
  changed securety context switching
sql/sql_acl.cc:
  changed securety context switching
sql/sql_acl.h:
  changed securety context switching
sql/sql_base.cc:
  changed securety context switching
sql/sql_class.cc:
  changed securety context switching
sql/sql_class.h:
  changed securety context switching
sql/sql_db.cc:
  changed securety context switching
sql/sql_insert.cc:
  changed securety context switching
sql/sql_parse.cc:
  changed securety context switching
sql/sql_show.cc:
  changed securety context switching
sql/sql_trigger.cc:
  changed securety context switching
sql/sql_view.cc:
  changed securety context switching
sql/sql_yacc.yy:
  changed securety context switching

mysql-test/r/sp.result:
  fix result
mysql-test/r/type_newdecimal.result:
  fix result
mysql-test/t/sp.test:
  add a test for the bug
mysql-test/t/type_newdecimal.test:
  add a test for the bug
sql/item_func.cc:
  call correct method of the item

* Allocate thd->user_var_events elements on appropriate mem_root
* If several SP statements are binlogged as a single statement, collect all user var
  accesses they make (grep for StoredRoutinesBinlogging for details)


mysql-test/r/rpl_sp_effects.result:
  Testcase for BUG#12637
mysql-test/r/sp.result:
  re-enabled test case for BUG#12297
mysql-test/t/rpl_sp_effects.test:
  Testcase for BUG#12637
mysql-test/t/sp.test:
  re-enabled test case for BUG#12297
sql/item_func.cc:
  Fix for BUG#12637: Make SPs+user variables replication work:
  * Allocate thd->user_var_events elements on appropriate mem_root
  * If several SP statements are binlogged as a single statement, collect all user var
    accesses they make.
sql/log.cc:
  Fix for BUG#12637: Make SPs+user variables replication work:
  * Allocate thd->user_var_events elements on appropriate mem_root
  * If several SP statements are binlogged as a single statement, collect all user var
    accesses they make.
sql/sp_head.cc:
  Fix for BUG#12637: Make SPs+user variables replication work:
  * Allocate thd->user_var_events elements on appropriate mem_root
  * If several SP statements are binlogged as a single statement, collect all user var
    accesses they make.
sql/sp_head.h:
  Remove compiler warning.
sql/sql_class.h:
  Fix for BUG#12637: Make SPs+user variables replication work.
sql/sql_parse.cc:
  Fix for BUG#12637: Make SPs+user variables replication work.

  Argument of RAND function can be constant value only

The idea of the patch is to separate statement processing logic,
such as parsing, validation of the parsed tree, execution and cleanup, 
from global query processing logic, such as logging, resetting
priorities of a thread, resetting stored procedure cache, resetting
thread count of errors and warnings.
This makes PREPARE and EXECUTE behave similarly to the rest of SQL
statements and allows their use in stored procedures.
This patch contains a change in behaviour:
until recently for each SQL prepared statement command, 2 queries
were written to the general log, e.g.
[Query]   prepare stmt from @stmt_text;
[Prepare] select * from t1 <-- contents of @stmt_text
The chagne was necessary to prevent [Prepare] commands from being written
to the general log when executing a stored procedure with Dynamic SQL.
We should consider whether the old behavior is preferrable and probably
restore it.
This patch refixes Bug#7115, Bug#10975 (partially), Bug#10605 (various bugs
in Dynamic SQL reported before it was disabled).


mysql-test/r/not_embedded_server.result:
  Since we don't want to log Dynamic SQL in stored procedures,
  now the general log gets only one log entry per SQL statement.
mysql-test/r/sp-error.result:
  - remove obsolete tests
  - a better error message for the case when a stored procedure that
  returns a result set is called from a function
mysql-test/r/trigger.result:
  - a better error message for the case when a stored procedure that
  returns a result set is called from a trigger
mysql-test/t/sp-error.test:
  - a better error message for the case when a stored procedure that
    returns a result set is called from a function.
  - move the comment to its place (end of file).
mysql-test/t/trigger.test:
  - a better error message for the case when a stored procedure that
  returns a result set is called from a trigger
sql/item_func.cc:
  - we need to pass sql_command explicitly to get_var_with_binlog, because
  when creating a query for SQL prepared statement thd->lex->sql_command
  points at SQLCOM_EXECUTE, which is not listed in the list of update
  queries.
sql/log_event.h:
  - remove an extra copy of the previous sentence
sql/mysql_priv.h:
  - fix declarations of sql_prepare.cc API
sql/share/errmsg.txt:
  - a new error message, when one attempts to execute a prepared statement
  which is currently being executed (this can happen only in Dynamic SQL
  at the moment).
sql/sp_head.cc:
  - extend sp_multi_results_command to return different flags for a
  command (and rename it)
  - add support for SQLCOM_PREPARE,SQLCOM_EXECUTE, SQLCOM_DEALLOCATE
    to sp_get_flags_for_command
  - replace multiple boolean sp_head members with uint m_flags
  - a fix for a crash when user variables are used in a stored procedure
    and binlog is on. A temporary fix for Bug#12637 "SP crashes the server 
   if it has update query with user var & binlog is enabled", which actually
   stands for stored functions: now instead of a crash we break
   replication if a user variable is used in a stored function which 
   is executed in prelocked mode.
sql/sp_head.h:
  - replace multiple boolean flags of sp_head with uint m_flags;
  - add flag CONTAINS_DYNAMIC_SQL
  - use this flag to error if a stored procedure with Dynamic SQL is
    called from a function or trigger.
sql/sql_class.cc:
  - Statement_map::insert should not delete a statement if it exists,
    now it's done externally to be able to handle the case when the
    statement being deleted is in use.
  - remove extra code (free_list is already reset in free_items)
sql/sql_lex.cc:
  - add lex->stmt_prepare_mode; we can't rely on thd->command any more,
    because we don't reset it any more (Dynamic SQL requirement is that
    PS are as little intrusive as possible).
sql/sql_lex.h:
  - declare bool LEX::stmt_prepare_mode
sql/sql_parse.cc:
  - move prepared statement code to sql_prepare.cc
  - change declarations (refactored code)
  - better error message when one attempts to use Dynamic SQL or a 
    stored procedure that returns a result set in a function or trigger.
sql/sql_prepare.cc:
  - major refactoring to ensure PREPARE/EXECUTE commands do not reset global THD
    state and allow their use in stored procedures.
  - add Prepared_statement::flags and use it to ensure no recursive execution
    of a prepared statement is possible
  - better comments
sql/sql_yacc.yy:
  - enable PREPARE/EXECUTE/DEALLOCATE in stored procedures
  - produce an error message on attempt to use PREPARE/EXECUTE/DEALLOCATE
    in a stored function or trigger
mysql-test/r/sp-dynamic.result:
  - sp-dynamic.test results
mysql-test/t/sp-dynamic.test:
  - a new test for PREPARE/EXECUTE/DEALLOCATE in stored procedures.

- current_arena to stmt_arena: the thread may have more than one
'current' arenas: one for runtime data, and one for the parsed 
tree of a statement. Only one of them is active at any moment.
- set_item_arena -> set_query_arena, because Item_arena was renamed to 
Query_arena a while ago
- set_n_backup_item_arena -> set_n_backup_active_arena;
the active arena is the arena thd->mem_root and thd->free_list
are currently pointing at.
- restore_backup_item_arena -> restore_active_arena (with the same
rationale)
- change_arena_if_needed -> activate_stmt_arena_if_needed; this
method sets thd->stmt_arena active if it's not done yet.


sql/item.cc:
  Rename.
sql/item_cmpfunc.cc:
  Rename.
sql/item_func.cc:
  Rename.
sql/item_subselect.cc:
  Rename.
sql/item_subselect.h:
  Remove an unused forward declaration.
sql/item_sum.h:
  Remove an unused forward declaration.
sql/mysql_priv.h:
  Remove an unused forward declaration.
sql/sp.cc:
  Rename.
sql/sp_head.cc:
  Rename.
sql/sql_base.cc:
  Rename.
sql/sql_class.cc:
  Rename.
sql/sql_class.h:
  Rename.
sql/sql_lex.cc:
  Rename.
sql/sql_parse.cc:
  Rename.
sql/sql_prepare.cc:
  Rename.
sql/sql_select.cc:
  Rename.
sql/sql_show.cc:
  Rename.
sql/sql_union.cc:
  Rename.
sql/sql_view.cc:
  Rename.
sql/table.cc:
  Rename.

(Server crash on DO IFNULL(NULL,NULL)
(fixes also "SELECT CAST(IFNULL(NULL,NULL) as DECIMAL)" unreported
 crash)
(new revampled fix with suggestions from Igor)


mysql-test/r/select.result:
  result of test for bug 12841
mysql-test/t/select.test:
  test for bug #12841
  (Server crash on DO IFNULL(NULL,NULL)
sql/item_func.cc:
  don't use the return value of ::str_op() without checking it
  whether checking it for NULL. (fixes bug #12841 as well as
  another not reported bug, but existing one - test case added).
  All other places where ::str_op() is used are safe.

  Corrected results after the fix for bug #12791.
func_test.result, func_test.test:
  Added test cases for bug #12791.
item_func.h, item_func.cc:
  Fixed bug #12791.
  Made LEAST/GREATES fully Oracle compliant.
  LEAST/GREATEST did not return NULL if only some
  arguments were NULLs. This did not comply with Oracle.


sql/item_func.cc:
  Fixed bug #12791.
  Made LEAST/GREATES fully Oracle compliant.
  LEAST/GREATEST did not return NULL if only some
  arguments were NULLs. This did not comply with Oracle.
sql/item_func.h:
  Fixed bug #12791.
  Made LEAST/GREATES fully Oracle compliant.
  LEAST/GREATEST did not return NULL if only some
  arguments were NULLs. This did not comply with Oracle.
mysql-test/t/func_test.test:
  Added test cases for bug #12791.
mysql-test/r/func_test.result:
  Added test cases for bug #12791.
mysql-test/r/null.result:
  Corrected results after the fix for bug #12791.
mysql-test/r/func_str.result:
  Corrected results after the fix for bug #12791.

"Interleaved SPs execution is now binlogged properly, "SELECT spfunc()" is binlogged too.
The known remaining issue is binlogging/replication of "a routine is deleted while it is executed" scenario.


mysql-test/r/rpl_sp.result:
  Fix for BUG#12335: updated test cases/results
mysql-test/t/rpl_sp.test:
  Fix for BUG#12335: updated test cases/results
sql/item.cc:
  Fix for BUG#12335 (SP replication): 
   - Added Item_name_const 'function'
   - Addede 'delete reuse' to call dtor on item reuse
sql/item.h:
  Fix for BUG#12335 (SP replication) : Added Item_name_const 'function' + code cleanup
sql/item_create.cc:
   Fix for BUG#12335 (SP replication) : Added Item_name_const 'function'
sql/item_create.h:
   Fix for BUG#12335 (SP replication) : Added Item_name_const 'function'
sql/item_func.cc:
  Fix for BUG#12335 (SP replication) : binary log is now constrolled from within execute_function.
sql/lex.h:
  Fix for BUG#12335 ...

sql/item_func.cc:
  Remove unnecessary initialization, fix parens placement

include/my_global.h:
  Add set_timespec_nsec() for setting higher-resolution time.
sql/item_func.cc:
  Use pthread_cond_timedwait() for SLEEP() so that it can be killed
  using the normal thread/query-killing code.

This allows us to use statement replication with functions and triggers
The following things are fixed with this patch:
- NOW() and automatic timestamps takes the value from the main event for functions and triggers (which allows these to replicate with statement level logging)
- No side effects for triggers or functions with auto-increment values(), last_insert_id(), rand() or found_rows()
- Triggers can't return result sets

Fixes bugs:
#12480: NOW() is not constant in a trigger
#12481: Using NOW() in a stored function breaks statement based replication
#12482: Triggers has side effects with auto_increment values
#11587: trigger causes lost connection error


mysql-test/r/trigger.result:
  Added test fpr big
mysql-test/t/sp-error.test:
  Changed error message numbers
mysql-test/t/trigger.test:
  Added test for trigger returning result (#11587)
sql/item_func.cc:
  Store the first used seed value for RAND() value.
  (This makes rand() replicatable in functions and triggers)
  Save and clear run context before executing a stored function and restore it afterwards.
  This removes side effects of stored functions for RAND(), auto-increment values and NOW() and makes most stored function replicatable
sql/share/errmsg.txt:
  Reuse error message also for triggers
sql/sp_head.cc:
  If in function or trigger, don't change value of NOW()
  (This allows us to use statement replication with functions that directly or indirectly uses timestamps)
sql/sql_class.cc:
  Added framework for storing and retrieving run context while exceuting triggers or stored functions.
sql/sql_class.h:
  Added framework for storing and retrieving run context while exceuting triggers or stored functions.
sql/sql_parse.cc:
  If in function or trigger, don't change value of NOW()
  (This allows us to use statement replication with functions that directly or indirectly uses timestamps)
sql/sql_trigger.cc:
  Moved process_triggers function from sql_trigger.h
  Use reset/restore sub_statement_state while executing triggers to avoid side effects and make them replicatable
sql/sql_trigger.h:
  Moved process_triggers function from sql_trigger.h
  Use reset/restore sub_statement_state while executing triggers to avoid side effects and make them replicatable
sql/sql_yacc.yy:
  Give error message if trigger can return a result set (Bug #11587)
tests/fork_big2.pl:
  Removed return from end of lines
mysql-test/r/rpl_trigger.result:
  New BitKeeper file ``mysql-test/r/rpl_trigger.result''
mysql-test/t/rpl_trigger.test:
  New BitKeeper file ``mysql-test/t/rpl_trigger.test''