GitLab

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

  After merge fix


sql/sql_select.cc:
  After merge fix

Procedure analyse() redefines select's fields_list. setup_copy_fields() assumes
that fields_list is a part of all_fields_list. Because select have only 
3 columns and analyse() redefines it to have 10 columns, int overrun in
setup_copy_fields() occurs and server goes to almost infinite loop.

Because fields_list used not only to send data ad fields types, it's wrong 
to allow procedure redefine it. This patch separates select's fileds_list 
and procedure's one. Now if procedure is present, copy of fields_list is 
created in procedure_fields_list and it is used for sending data and fields.


mysql-test/t/analyse.test:
  Test case for bug #14138  ROLLUP and PROCEDURE ANALYSE() hang server
mysql-test/r/analyse.result:
  Test case for bug #14138  ROLLUP and PROCEDURE ANALYSE() hang server
sql/sql_select.h:
  Fix bug #14138  ROLLUP and PROCEDURE ANALYSE() hang server
  To JOIN  Added separate fields_list for procedure.
sql/sql_select.cc:
  Fix bug #141...

DISTINCT wasn't optimized away and caused creation of tmp table in wrong
case. This result in integer overrun and running out of memory.

Fix backported from 4.1. Now if optimizer founds that in result be only 1
row it removes distinct.


sql/sql_select.cc:
  Fix bug #13855 select distinct with group by caused server crash
mysql-test/r/select.result:
  Test case for bug#13855 select distinct with group by caused server crash
mysql-test/t/select.test:
   Test case for bug#13855 select distinct with group by caused server crash

Move handling of suffix_length from strnxfrm_bin() to filesort to ensure proper sorting of all kind of binary objects
field::sort_key() now adds length last for varbinary/blob
VARBINARY/BLOB is now sorted by filesort so that shorter strings comes before longer ones
Fixed issues in test cases from last merge



mysql-test/r/select.result:
  Change column name in test to get GROUP BY to use the alias
mysql-test/r/type_blob.result:
  Test BLOB and VARCHAR sorting
mysql-test/t/select.test:
  Change column name in test to get GROUP BY to use the alias
  Drop used tables at start of test
  Don't use table names 'a', 'b' or 'c'
mysql-test/t/type_blob.test:
  Test BLOB and VARCHAR sorting
sql/field.cc:
  Store length last in VARBINARY() and BLOB() columns to get shorter strings sorted before longer onces
sql/field.h:
  Added method 'sort_length()' to allow one to have length bytes last for VARBINARY/BLOB to get these to sort properly
sql/filesort.cc:
  Use 'sort_length()' instead of 'pack_length()' to get length o...

mysql-test/r/select.result:
  test result fixed
mysql-test/t/select.test:
  test case added
sql/sql_select.cc:
  do the same for nullable

The bug was in JOIN::join_free which was wrongly determining that
all joins have been already executed and therefore all used tables
can be closed.


mysql-test/r/subselect_innodb.result:
  - test results fixed (Bug#12736 "Server crash during a select
mysql-test/t/subselect_innodb.test:
  - a test case for Bug#12736 "Server crash during a select": test
  that ha_index_or_rnd_end and mysql_unlock_tables are called
  for all used tables in proper order.
sql/item_subselect.cc:
  - implement subselect_union_engine::is_executed
sql/item_subselect.h:
  - implement Item_subselect::is_evaluated. This function is used
  to check whether we can clean up a non-correlated join of a subquery
  when cleaning up the join of the outer query
sql/sql_lex.h:
  - declare st_select_lex::cleanup_all_joins
sql/sql_select.cc:
  - remove an argument from JOIN::join_free, it's now not used
  - reimplement JOIN::join_free to not unlock tables if there
    is a subquery that has not yet been evaluated. Make sure that the
    new implementation calls ha_index_or_rnd_end for every table in
    the join and inner joins, because all table cursors must be closed
    before mysql_unlock_tables.
sql/sql_select.h:
  - JOIN::join_free signature changed
sql/sql_union.cc:
  - implement a helper method st_select_lex::cleanup_all_joins, which
    recursively walks over a tree of joins and calls cleanup() for
    each join.

  Bug #7672 after merge fix


sql/item.cc:
  Bug #7672 after merge fix
sql/sql_lex.cc:
  Bug #7672 after merge fix
sql/sql_select.cc:
  Bug #7672 after merge fix
mysql-test/t/select.test:
  Bug #7672 after merge fix

- 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()

check_equality() finds equalities among field items. It checks input items
to be Item_fields thus skipping view's fields, which are represented by
Item_direct_view_ref. Because of this index wasn't applied in all cases
it can be.

To fix this problem check_equality() now takes real item of
Item_direct_view_ref, except outer view refs (with depended_from set).


sql/sql_select.cc:
  Fix bug #13327 VIEW performs index scan
   For proper views fields handling check_equality() now takes real item from Item_direct_view_ref, with exception of outer view refs.
mysql-test/r/view.result:
  Test case for bug#13327 VIEW performs index scan
mysql-test/t/view.test:
  Test case for bug#13327 VIEW performs index scan

When fixing Item_func_plus in ORDER BY clause field c is searched in all
opened tables, but because c is an alias it wasn't found there.

This patch adds a flag to select_lex which allows Item_field::fix_fields() 
to look up in select's item_list to find aliased fields.


sql/item.cc:
  Fix bug#7672 Unknown column error in order clause
  When fixing fields in ORDER BY clause allow Item_field::fix_fields() to look up items in select's item list to find aliased fields.
sql/sql_lex.cc:
   Fix bug#7672 Unknown column error in order clause
sql/sql_lex.h:
  Fix bug#7672 Unknown column error in order clause
  Added flag to select_lex allowing Item_field::fix_fields to look up items in select's item list.
sql/sql_select.cc:
  Fix bug#7672 Unknown column error in order clause
mysql-test/t/select.test:
  Test case for bug#7672 Unknown column error in order clause
mysql-test/r/select.result:
  Test case for bug#7672 Unknown column error in order clause

"t.key BETWEEN c1 AND c2" and c1 = c2 -> can access table t using "t.key = c1".


mysql-test/r/heap.result:
  BUG#13455: updated test results
mysql-test/r/innodb.result:
  BUG#13455: updated test results
mysql-test/r/myisam.result:
  BUG#13455: updated test results
mysql-test/r/range.result:
  Testcase for BUG#13455
mysql-test/t/range.test:
  Testcase for BUG#13455

not equivalent to "x=y" when item->negated == TRUE.


mysql-test/r/func_in.result:
  Testcase for BUG#13419
mysql-test/t/func_in.test:
  Testcase for BUG#13419
sql/sql_select.cc:
  Fix for BUG#13419:
  * Take into account that item=Item_func_in(x,y) is not equivalent to "x=y" when 
    item->negated == TRUE.
  * Removed comment that is no longer true.

Fixed problems in test suite where some test failed
Fixed access to not initialized memory in federated
Fixed access to not initialized memory when using BIT fields in internal temporary tables


BitKeeper/etc/ignore:
  added libmysqld/sql_cursor.h
mysql-test/r/information_schema.result:
  Change view names to 'v#' to not cause massive conflict with other tests if test dies in the middlecd
mysql-test/r/information_schema_inno.result:
  Remove used tables at start
mysql-test/r/multi_statement.result:
  Remove used tables at start
mysql-test/r/temp_table.result:
  Change view names to 'v#' to not cause massive conflict with other tests if test dies in the middle
mysql-test/r/type_bit.result:
  More tests
mysql-test/t/information_schema.test:
  Change view names to 'v#' to not cause massive conflict with other tests if test dies in the middle
mysql-test/t/information_schema_inno.test:
  Remove used tables at start
mysql-test/t/multi_statement.test:
  Remove used tables at start
mysql-test/t/temp_table.test:
  Change view names to 'v#' to not cause massive conflict with other tests if test dies in the middle
mysql-test/t/type_bit.test:
  More tests
mysql-test/valgrind.supp:
  Removed some valgrind warnings that isn't errors
sql/ha_federated.cc:
  Fixed errors discovered by valgrind:
  - Socket was not initialized
  - share->scheme was deleted while there was still pointer into it from the hash
sql/item_func.h:
  Remove access to table object from cleanup() as the table object may have been dropped earlier (In case of temporary tables or of close_thread_tables() is run before cleanup())
  This fixed a bug with access to already freed memory
sql/sql_base.cc:
  Reset variables used by fulltext
sql/sql_select.cc:
  Fixed various problems with bit fields when used in internal temporary tables.
  Calculate space needed for bit fields correctly (previously we allocated more space than needed for rows in heap/myisam tables)

cursor is interpreted latin1 character and Bug#9819 "Cursors: Mysql Server
Crash while fetching from table with 5 million records."
A fix for a possible memory leak when fetching into an SP cursor
in a long loop.
The patch uses a common implementation of cursors in the binary protocol and 
in stored procedures and implements materialized cursors.
For implementation details, see comments in sql_cursor.cc


include/my_sys.h:
  - declaration for multi_alloc_root
libmysqld/Makefile.am:
  - drop protocol_cursor.cc, add sql_cursor.cc (replaces the old
  implementation of cursors with a new one)
mysql-test/r/ctype_ujis.result:
  - test results fixed (a test case for Bug#6513)
mysql-test/r/sp-big.result:
  - test results fixed (a test case for Bug#9819)
mysql-test/t/ctype_ujis.test:
  Add a test case for Bug#6513 "Test Suite: Values inserted by using cursor is
   interpreted latin1 character"
mysql-test/t/sp-big.test:
  Add a restricted test case for Bug#9819 "Cursors: Mysql Server Crash
  while fetching from table with 5 million records."
mysys/my_alloc.c:
  - an implementation of multi_alloc_root; this is largely a copy-paste
    from mulalloc.c, but the function is small and there is no easy way
    to reuse the existing C function.
sql/Makefile.am:
  - add sql_cursor.h, sql_cursor.cc (a new implementation of stored procedure
  cursors) and drop protocol_cursor.cc (the old one)
sql/handler.cc:
  - now TABLE object has its mem_root always initialized.
    Adjust the implementation handler::ha_open
sql/item_subselect.cc:
  - adjust to the changed declaration of st_select_lex_unit::prepare
sql/protocol.h:
  - drop Protocol_cursor
sql/sp_head.cc:
  - move juggling with Query_arena::free_list and Item::next to
    sp_eval_func_item, as this is needed in 3 places already.
sql/sp_head.h:
  - declare a no-op implementation for cleanup_stmt in sp_instr_cpush.
    This method is needed for non-materializing cursors, which are yet not 
    used in stored procedures.
  - declaration for sp_eval_func_item
sql/sp_rcontext.cc:
  - reimplement sp_cursor using the new implementation of server side cursors.
  - use sp_eval_func_item to assign values of SP variables from the
    row fetched from a cursor. This should fix a possible memory leak in 
    the old implementation of sp_cursor::fetch
sql/sp_rcontext.h:
  - reimplement sp_cursor using the new implementation of server side cursors.
sql/sql_class.cc:
  - disable the functionality that closes transient cursors at commit/rollback;
    transient cursors are not used in 5.0, instead we use materialized ones.
    To be enabled in a later version.
sql/sql_class.h:
  - adjust to the rename Cursor -> Server_side_cursor
  - additional declarations of select_union used in materialized cursors
sql/sql_derived.cc:
  - reuse bits of tmp table code in UNION, derived tables, and materialized
    cursors
  - cleanup comments
sql/sql_lex.h:
  - declarations of auxiliary methods used by materialized cursors
  - a cleanup in st_select_lex_unit interface
sql/sql_list.h:
  - add an array operator new[] to class Sql_alloc
sql/sql_prepare.cc:
  - split the tight coupling of cursors and prepared statements to reuse 
    the same implementation in stored procedures
  - cleanups of error processing in Prepared_statement::{prepare,execute}
sql/sql_select.cc:
  - move the implementation of sensitive (non-materializing) cursors to 
    sql_cursor.cc
  - make temporary tables self-contained: the table, its record and fields
    are allocated in TABLE::mem_root. This implementation is not clean
    and resets thd->mem_root several times because of the way create_tmp_table 
    works (many additional things are done inside it).
  - adjust to the changed declaration of st_select_lex_unit::prepare
sql/sql_select.h:
  - move the declaration of sensitive (non-materializing) cursors to 
    sql_cursor.cc
sql/sql_union.cc:
  - move pieces of st_select_unit::prepare to select_union and st_table
    methods to be able to reuse code in the implementation of materialized
    cursors
sql/sql_view.cc:
  - adjust to the changed signature of st_select_lex_unit::prepare
sql/table.cc:
  - implement auxiliary st_table methods for use with temporary tables
sql/table.h:
  - add declarations for auxiliary methods of st_table used to work with 
   temporary tables
tests/mysql_client_test.c:
  - if cursors are materialized, a parallel update of the table used
    in the cursor may go through: update the test.
sql/sql_cursor.cc:
  New BitKeeper file ``sql/sql_cursor.cc'' -- implementation of server side
  cursors
sql/sql_cursor.h:
  New BitKeeper file ``sql/sql_cursor.h'' - declarations for
  server side cursors.

For queries with GROUP BY and without hidden GROUP BY fields DISTINCT is
optimized away becuase such queries produce result set without duplicates.
But ROLLUP can add rows which may be same to some rows and this fact was
ignored.

Added check so if ROLLUP is present DISTINCT can't be optimized away.


sql/sql_select.cc:
  Fix bug #12887 Distinct is not always applied after rollup
mysql-test/r/olap.result:
  Test case for bug #12887 Distinct is not always applied after rollup
mysql-test/t/olap.test:
  Test case for bug #12887 Distinct is not always applied after rollup

Fix for bug #13025; Server crash in filesort because wrong call to handler::position()


client/mysqltest.c:
  Code cleanup during review
mysql-test/r/innodb.result:
  Added test case for bug #13025; Server crash in filesort because wrong call to handler::position()
mysql-test/t/innodb.test:
  Added test case for bug #13025; Server crash in filesort because wrong call to handler::position()
sql/filesort.cc:
  Don't call handler::position() if row was not found
sql/item_cmpfunc.cc:
  Indentation changes
sql/sql_select.cc:
  Moved variable to outer level

  Fixed bug #12885.
  Forced inheritence of the maybe_null flag for the expressions
  containing GROUP BY attributes in selects with ROLLUP.
olap.test, olap.result:
  Added test case for bug #12885.


mysql-test/r/olap.result:
  Added test case for bug #12885.
mysql-test/t/olap.test:
  Added test case for bug #12885.
sql/sql_select.cc:
  Fixed bug #12885.
  Forced inheritence of the maybe_null flag for the expressions
  containing GROUP BY attributes in selects with ROLLUP.

  Post merge changes
sql_yacc.yy:
  Post merge changes
sql_select.cc:
  Fixed bugs #12101, #12102: wrong calculation of not_null_tables()
   for some expressions (post merge changes).
   The function add_key_fields() is modified. There cannot be NOT before
   BETWEEN/IN anymore. Rather Item_func_between/in objects can represent
   now [NOT]BETWEEN/IN expressions.


sql/item_cmpfunc.cc:
  Post merge changes
sql/opt_range.cc:
  Post merge changes
sql/sql_select.cc:
  Fixed bugs #12101, #12102: wrong calculation of not_null_tables()
   for some expressions (post merge changes).
   The function add_key_fields() is modified. There cannot be NOT before
   BETWEEN/IN anymore. Rather Item_func_between/in objects can represent
   now [NOT]BETWEEN/IN expressions.
sql/sql_yacc.yy:
  Post merge changes.
mysql-test/r/join_outer.result:
  Post merge changes

created item into item->result_field, not *(item->ref)->result_field.


mysql-test/r/view.result:
  Tescase for BUG#12941
mysql-test/t/view.test:
  Tescase for BUG#12941

- 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.

sql/sql_select.cc:
  a fix (bug #10303: Misleading Last_query_cost value).
  reset last_query_cost in the very beginning.

 - Added testcase for this bug
 - Check if compact view format can be used
 - Clean up mysqld_show_create


mysql-test/r/mysqldump.result:
  Updated test result
mysql-test/t/mysqldump.test:
  Added testcase
sql/item.cc:
  Check if compact format can be used
sql/sql_select.cc:
  Check if compact format can be used
sql/sql_show.cc:
  Cleanup of mysqld_show_create
   -remove extra invocation of view_store_create_info
   -Remove unused vars
   -Remove unused codes
  Check if compact show view format can be used 
    - if user has db of this view as current db
    - if this view only references table inside it's own db
sql/table.h:
  Add variable for compact_view_format indicator

  After merge fix for bug #12537


sql/item.cc:
  After merge fix for bug #12537
sql/sql_select.cc:
  After merge fix for bug #12537
mysql-test/r/create.result:
  After merge fix for bug #12537
mysql-test/t/create.test:
  After merge fix for bug #12537

Item::tmp_table_field_from_field_type() and create_tmp_field_from_item()
was converting string field to blob depending on byte-wise length instead of
character length, which results in converting valid varchar string with
length == 86 to longtext.

Made that functions above take into account max width of character when
converting string fields to blobs.


sql/item.cc:
  Fix bug #12537 UNION produces longtext instead of varchar
  Item::tmp_table_field_from_field_type() now taking into account max char width when creating tmp field for string fields.
sql/sql_select.cc:
  Fix bug #12537 UNION produces longtext instead of varchar
   create_tmp_field_from_item()now taking into account max char width when creating tmp field for string fields.
mysql-test/r/create.result:
  Test case for bug #12537 UNION produces longtext instead of varchar
mysql-test/t/create.test:
  Test case for bug #12537 UNION produces longtext instead of varchar

sql/sql_select.cc:
  reset the group functions and copy the values of the first row before exiting because of
  maximal number of rows has been read for this cursor fetch. the additional variable is needed
  to save code duplication.
tests/mysql_client_test.c:
  test for bug #11904 (cursor grouping wrong result)

  Added test cases for bug #12625.
sql_select.cc:
  Fixed bug #12625.
  Fixed invalid removal of constant items from the DISTINCT
  list in the function create_distinct_group.


sql/sql_select.cc:
  Fixed bug #12625.
mysql-test/r/distinct.result:
  Added test cases for bug #12625.
mysql-test/t/distinct.test:
  Added test cases for bug #12625.

create_tmp_field_from_item() was creating tmp field without regard to
original field type of Item. This results in wrong type being reported to
client.

To create_tmp_field_from_item() added special handling for Items with 
DATE/TIME field types to preserve their type.


sql/sql_select.cc:
  Fix bug #11718 query with function, join and order by returns wrong type.
tests/mysql_client_test.c:
  Test case for bug #11718: query with function, join and order by returns wrong type

  Fixed bug #11479.
  The JOIN::reinit method cannot call setup_tables
  after the optimization phase since this function
  removes some optimization settings for joined
  tables. E.g. it resets values of the null_row flag to 0.
subselect.result, subselect.test:
  Added a test case for bug #11479.


mysql-test/t/subselect.test:
  Added a test case for bug #11479.
mysql-test/r/subselect.result:
  Added a test case for bug #11479.
sql/sql_select.cc:
  Fixed bug #11479.
  The JOIN::reinit method cannot call setup_tables
  after the optimization phase since this function
  removes some optimization settings for joined
  tables. E.g. it resets values of the null_row flag to 0.

mysql-test/r/subselect.result:
  testst of IN subqueries with row
mysql-test/t/subselect.test:
  tests of ion subqueries with row
sql/item.h:
  add method to prevent of removing Item_ref_null_helper from HAVING
sql/item_cmpfunc.h:
  Prevented removing of Item_test_isnotnull from HAVING
sql/item_subselect.cc:
  fixed converting row IN subqueries
sql/sql_select.cc:
  fixed debug print

"Process NATURAL and USING joins according to SQL:2003".

* Some of the main problems fixed by the patch:
  - in "select *" queries the * expanded correctly according to
    ANSI for arbitrary natural/using joins
  - natural/using joins are correctly transformed into JOIN ... ON
    for any number/nesting of the joins.
  - column references are correctly resolved against natural joins
    of any nesting and combined with arbitrary other joins.

* This patch also contains a fix for name resolution of items
  inside the ON condition of JOIN ... ON - in this case items must
  be resolved only against the JOIN operands. To support such
  'local' name resolution, the patch introduces a stack of
  name resolution contexts used at parse time.

NOTICE:
- This patch is not complete in the sense that
  - there are 2 test cases that still do not pass -
    one in join.test, one in select.test. Both are marked
    with a comment "TODO: WL#2486".
  - it does not include a new test specific for the task


mysql-test/include/ps_query.inc:
  Adjusted according to standard NATURAL/USING join semantics.,
mysql-test/r/bdb.result:
  Adjusted according to standard NATURAL/USING join semantics.
mysql-test/r/derived.result:
  Adjusted according to standard NATURAL/USING join semantics.
mysql-test/r/errors.result:
  The column as a whole cannot be resolved, so different error message.
mysql-test/r/fulltext.result:
  Adjusted according to standard JOIN ... ON semantics =>
  the ON condition can refer only to the join operands.
mysql-test/r/fulltext_order_by.result:
  More detailed error message.
mysql-test/r/innodb.result:
  Adjusted according to standard NATURAL/USING join semantics.
  This test doesn't pass completetly yet!
mysql-test/r/insert_select.result:
  More detailed error message.
mysql-test/r/join.result:
  Adjusted according to standard NATURAL/USING join semantics.
  
  NOTICE: there is one test case that still fails, and it is
  commeted out and marked with WL#2486 in the test file.
mysql-test/r/join_crash.result:
  Adjusted according to standard NATURAL/USING join semantics.
mysql-test/r/join_nested.result:
  Adjusted according to standard NATURAL/USING join semantics.
mysql-test/r/join_outer.result:
  Adjusted according to standard NATURAL/USING join semantics.
mysql-test/r/multi_update.result:
  Adjusted according to standard NATURAL/USING join semantics.
mysql-test/r/null_key.result:
  Adjusted according to standard NATURAL/USING join semantics.
mysql-test/r/order_by.result:
  Adjusted according to standard NATURAL/USING join semantics.
mysql-test/r/ps_2myisam.result:
  Adjusted according to standard NATURAL/USING join semantics.
mysql-test/r/ps_3innodb.result:
  Adjusted according to standard NATURAL/USING join semantics.
mysql-test/r/ps_4heap.result:
  Adjusted according to standard NATURAL/USING join semantics.
mysql-test/r/ps_5merge.result:
  Adjusted according to standard NATURAL/USING join semantics.
mysql-test/r/ps_6bdb.result:
  Adjusted according to standard NATURAL/USING join semantics.
mysql-test/r/ps_7ndb.result:
  Adjusted according to standard NATURAL/USING join semantics.
mysql-test/r/select.result:
  Adjusted according to standard NATURAL/USING join semantics.
  
  NOTICE: there is one failing test case which is commented with
  WL#2486 in the test file.
mysql-test/r/subselect.result:
  Adjusted according to standard NATURAL/USING join semantics.
mysql-test/r/type_ranges.result:
  Adjusted according to standard NATURAL/USING join semantics.
mysql-test/r/union.result:
  More detailed error message.
mysql-test/t/bdb.test:
  Adjusted according to standard NATURAL/USING join semantics.
mysql-test/t/errors.test:
  Adjusted according to standard NATURAL/USING join semantics.
mysql-test/t/fulltext.test:
  Adjusted according to standard JOIN ... ON semantics =>
  the ON condition can refer only to the join operands.
mysql-test/t/fulltext_order_by.test:
  More detailed error message.
mysql-test/t/innodb.test:
  Adjusted according to standard NATURAL/USING join semantics.
  This test doesn't pass completetly yet!
mysql-test/t/insert_select.test:
  More detailed error message.
mysql-test/t/join.test:
  Adjusted according to standard NATURAL/USING join semantics.
  
  NOTICE: there is one test case that still fails, and it is
  commeted out and marked with WL#2486 in the test file.
mysql-test/t/join_crash.test:
  Adjusted according to standard NATURAL/USING join semantics.
mysql-test/t/join_nested.test:
  Adjusted according to standard NATURAL/USING join semantics.
mysql-test/t/join_outer.test:
  Adjusted according to standard NATURAL/USING join semantics.
mysql-test/t/null_key.test:
  Adjusted according to standard NATURAL/USING join semantics.
mysql-test/t/order_by.test:
  Adjusted according to standard NATURAL/USING join semantics.
mysql-test/t/select.test:
  Adjusted according to standard NATURAL/USING join semantics.
  
  NOTICE: there is one test case that still fails, and it is
  commeted out and marked with WL#2486 in the test file.
mysql-test/t/subselect.test:
  Adjusted according to standard NATURAL/USING join semantics.
mysql-test/t/type_ranges.test:
  Adjusted according to standard NATURAL/USING join semantics.
mysql-test/t/union.test:
  More detailed error message.
sql/item.cc:
  - extra parameter to find_field_in_tables
  - find_field_in_real_table renamed to find_field_in_table
  - fixed comments/typos
sql/item.h:
  - added [first | last]_name_resolution_table to class
    Name_resolution_context
  - commented old code
  - standardized formatting
sql/mysql_priv.h:
  - refactored the find_field_in_XXX procedures,
  - added a new procedure for natural join table references,
  - renamed the find_field_in_XXX procedures to clearer names
sql/sp.cc:
  - pass the top-most list of the FROM clause to setup_tables
  - extra parameter to find_field_in_tables
sql/sql_acl.cc:
  - renamed find_field_in_table => find_field_in_table_ref
  - extra parameter to find_field_in_table_ref
  - commented old code
sql/sql_base.cc:
  This file contains the core of the implementation of the processing
  of NATURAL/USING joins (WL#2486).
  - added many comments to old code
  - refactored the group of find_field_in_XXX procedures, and added a
    new procedure for natural joins. There is one find_field_in_XXX procedure
    per each type of table reference (stored table, merge view, or natural
    join); one meta-procedure that selects the correct one depeneding on the
    table reference; and one procedure that goes over a list of table
    referenes.
  - NATURAL/USING joins are processed through the procedures:
      mark_common_columns, store_natural_using_join_columns,
      store_top_level_join_columns, setup_natural_join_row_types.
    The entry point to processing NATURAL/USING joins is the
    procedure 'setup_natural_join_row_types'.
  - Replaced the specialized Field_iterator_XXX iterators with one
    generic iterator over the fields of a table reference.
  - Simplified 'insert_fields' and 'setup_conds' due to encapsulation of
    the processing of natural joins in a separate set of procedures.
sql/sql_class.h:
  - Commented old code.
sql/sql_delete.cc:
  - Pass the FROM clause to setup_tables.
sql/sql_help.cc:
  - pass the end name resolution table to find_field_in_tables
  - adjust the list of tables for name resolution
sql/sql_insert.cc:
  - Changed the code that saves and restores the current context to
    support the list of tables for name resolution -
    context->first_name_resolution_table, and
    table_list->next_name_resolution_table.
    Needed to support an ugly trick to resolve inserted columns only in
    the first table.
  - Added Name_resolution_context::[first | last]_name_resolution_table.
  - Commented old code
sql/sql_lex.cc:
  - set select_lex.parent_lex correctly
  - set correct state of the current name resolution context
sql/sql_lex.h:
  - Added a stack of name resolution contexts to support local
    contexts for JOIN ... ON conditions.
  - Commented old code.
sql/sql_load.cc:
  - Pass the FROM clause to setup_tables.
sql/sql_olap.cc:
  - Pass the FROM clause to setup_tables.
sql/sql_parse.cc:
  - correctly set SELECT_LEX::parent_lex
  - set the first table of the current name resoltion context
  - added support for NATURAL/USING joins
  - commented old code
sql/sql_select.cc:
  - Pass the FROM clause to setup_tables.
  - Pass the end table to find_field_in_tables
  - Improved comments
sql/sql_show.cc:
  - Set SELECT_LEX::parent_lex.
sql/sql_update.cc:
  - Pass the FROM clause to setup_tables.
sql/sql_yacc.yy:
  - Added support for a stack of name resolution contexts needed to
    implement name resolution for JOIN ... ON. A context is pushed
    for each new JOIN ... ON, and popped afterwards.
  - Added support for NATURAL/USING joins.
sql/table.cc:
  - Added new class Natural_join_column to hide the heterogeneous
    representation of column references for stored tables and for
    views.
  - Added a new list TABLE_LIST::next_name_resolution_table to
    support name resolution with NATURAL/USING joins. Also added
    other members to TABLE_LIST to support NATURAL/USING joins.
  - Added a generic iterator over the fields of table references
    of various types - class Field_iterator_table_ref
sql/table.h:
  - Added new class Natural_join_column to hide the heterogeneous
    representation of column references for stored tables and for
    views.
  - Added a new list TABLE_LIST::next_name_resolution_table to
    support name resolution with NATURAL/USING joins. Also added
    other members to TABLE_LIST to support NATURAL/USING joins.
  - Added a generic iterator over the fields of table references
    of various types - class Field_iterator_table_ref
tests/mysql_client_test.c:
  Adjusted according to standard NATURAL JOIN syntax.

Removed duplicate usage of TMP_TABLE_FORCE_MYISAM by making 'options' longlong


sql/ha_berkeley.cc:
  Removed not used variable (and options)
sql/ha_berkeley.h:
  Removed not used argument
sql/ha_ndbcluster.cc:
  Remove compiler warning
sql/init.cc:
  Simplify code
sql/item_sum.cc:
  Removed duplicate usage of TMP_TABLE_FORCE_MYISAM by making 'options' longlong
sql/mysql_priv.h:
  Removed duplicate usage of TMP_TABLE_FORCE_MYISAM by making 'options' longlong
sql/mysqld.cc:
  Removed duplicate usage of TMP_TABLE_FORCE_MYISAM by making 'options' longlong
sql/sql_class.h:
  Removed duplicate usage of TMP_TABLE_FORCE_MYISAM by making 'options' longlong
sql/sql_delete.cc:
  Removed duplicate usage of TMP_TABLE_FORCE_MYISAM by making 'options' longlong
sql/sql_derived.cc:
  Removed duplicate usage of TMP_TABLE_FORCE_MYISAM by making 'options' longlong
sql/sql_lex.h:
  Removed duplicate usage of TMP_TABLE_FORCE_MYISAM by making 'options' longlong
sql/sql_parse.cc:
  Indenta...

subqry order by server crash": failing DBUG_ASSERT(curr_join == this)
when opening a cursor.
Ensure that for top-level join curr_join == join (always), 
and thus fix the failing assert.
curr_join is a hack to ensure that uncacheable subqueries can be
re-evaluated safely, and should be never different from main join
in case of top-level join.


sql/sql_select.cc:
  - utilize tmp_join only if we evaluate an uncacheable subquery.
sql/sql_select.h:
  - implement JOIN::is_top_level_join()
tests/mysql_client_test.c:
  A test case for Bug#11901 "mysql_stmt_attr_set CURSOR_TYPE_READ_ONLY
   join in subqry order by server crash"

- Fixed some error condtion when handling dates with 'T'
- Added extra test for bug #11867 (Wrong result with "... WHERE ROW( a, b ) IN ( SELECT DISTINCT a, b WHERE ...)" to show it's not yet fixed
- Safety fixes and cleanups


mysql-test/r/subselect.result:
  Added extra test case to test case for bug #11867
  (Result shows that current code is not yet right and needs to be fixed)
mysql-test/r/type_datetime.result:
  More tests for dates of type CCYYMMDDTHHMMSS
mysql-test/t/subselect.test:
  Added extra test case to test case for bug #11867
mysql-test/t/type_datetime.test:
  More tests for dates of type CCYYMMDDTHHMMSS
sql-common/my_time.c:
  Fixed handling of dates of type CCYYMMDDTHHMMSS
  (Old code couldn't handle 2003-0304 or 2003-0003-02)
sql/slave.cc:
  Indentation cleanup
sql/sql_parse.cc:
  Added test of return value of get_system_var()
sql/sql_select.cc:
  Removed unnecessary call to field->table->maybe_null
sql/sql_union.cc:
  Indentation fixes

CURSOR_TYPE_READ_ONLY nested queries corrupt result"


sql/sql_prepare.cc:
  If there is a cursor, use its protocol for fetch: 
  Protocol instances have a state and thd->protocol_prep can't
  be used for multiple cursors.
sql/sql_select.cc:
  - init Cursor::protocol
sql/sql_select.h:
  - add Cursor::protocol
tests/mysql_client_test.c:
  A test case for Bug#11909 "mysql_stmt_attr_set CURSOR_TYPE_READ_ONLY
   nested queries corrupt result"

We're out of bits in st_select_lex->options so make TMP_TABLE_FORCE_MYISAM ==
OPTION_FOUND_COMMENT (the latter is not used by create_tmp_table).


mysql-test/r/create.result:
  Updated the test result
mysql-test/r/fulltext_order_by.result:
  Drop all tables this test uses
mysql-test/t/fulltext_order_by.test:
  Drop all tables this test uses

When creating temporary table for UNION, pass TMP_TABLE_FORCE_MYISAM flag to 
create_tmp_table if we will be using fulltext function(s) when reading from the 
temp. table.


mysql-test/r/fulltext_order_by.result:
  Testcase for BUG#11869 (cont'd, eliminating "table type doesn't support FULLTEXT" error)
mysql-test/t/fulltext_order_by.test:
  Testcase for BUG#11869 (cont'd, eliminating "table type doesn't support FULLTEXT" error)
sql/mysql_priv.h:
  BUG#11869 (cont'd, eliminating "table type doesn't support FULLTEXT" error):
  Added TMP_TABLE_FORCE_MYISAM flag
sql/sql_select.cc:
  BUG#11869 (cont'd, eliminating "table type doesn't support FULLTEXT" error):
  In create_tmp_table(), honor the TMP_TABLE_FORCE_MYISAM flag

  Reversed the changes to fix bug #12095 after review
  done by SergeyG. Applied a fix suggested by him.


sql/sql_class.h:
  Reversed the changes to fix bug #12095 after review
  done by SergeyG. Applied a fix suggested by him.
sql/sql_select.cc:
  Reversed the changes to fix bug #12095 after review
  done by SergeyG. Applied a fix suggested by him.