created for sorting.
Any outer reference in a subquery was represented by an Item_field object.
If the outer select employs a temporary table all such fields should be
replaced with fields from that temporary table in order to point to the
actual data. This replacement wasn't done and that resulted in a wrong
subquery evaluation and a wrong result of the whole query.
Now any outer field is represented by two objects - Item_field placed in the
outer select and Item_outer_ref in the subquery. Item_field object is
processed as a normal field and the reference to it is saved in the
ref_pointer_array. Thus the Item_outer_ref is always references the correct
field. The original field is substituted for a reference in the
Item_field::fix_outer_field() function.
New function called fix_inner_refs() is added to fix fields referenced from
inner selects and to fix references (Item_ref objects) to these fields.
The new Item_outer_ref class is a descendant of the Item_direct_ref class.
It additionally stores a reference to the original field and designed to
behave more like a field.
into mysql.com:/home/my/mysql-5.0
BitKeeper/etc/ignore:
auto-union
BUILD/SETUP.sh:
Auto merged
Makefile.am:
Auto merged
client/mysql.cc:
Auto merged
cmd-line-utils/readline/display.c:
Auto merged
configure.in:
Auto merged
extra/yassl/include/buffer.hpp:
Auto merged
extra/yassl/include/crypto_wrapper.hpp:
Auto merged
extra/yassl/include/yassl_imp.hpp:
Auto merged
extra/yassl/include/yassl_int.hpp:
Auto merged
extra/yassl/src/crypto_wrapper.cpp:
Auto merged
extra/yassl/taocrypt/include/algebra.hpp:
Auto merged
extra/yassl/taocrypt/include/des.hpp:
Auto merged
extra/yassl/taocrypt/include/hash.hpp:
Auto merged
extra/yassl/taocrypt/include/hmac.hpp:
Auto merged
extra/yassl/taocrypt/include/modarith.hpp:
Auto merged
extra/yassl/taocrypt/include/modes.hpp:
Auto merged
extra/yassl/taocrypt/include/rsa.hpp:
Auto merged
extra/yassl/taocrypt/include/type_traits.hpp:
Auto merged
extra/yassl/taocrypt/mySTL/list.hpp:
Auto merged
extra/yassl/taocrypt/src/aes.cpp:
Auto merged
extra/yassl/taocrypt/src/algebra.cpp:
Auto merged
extra/yassl/testsuite/testsuite.cpp:
Auto merged
include/my_global.h:
Auto merged
include/my_pthread.h:
Auto merged
libmysqld/lib_sql.cc:
Auto merged
myisam/mi_open.c:
Auto merged
mysql-test/mysql-test-run.pl:
Auto merged
mysql-test/r/mysqltest.result:
Auto merged
mysql-test/t/mysqltest.test:
Auto merged
mysys/default.c:
Auto merged
ndb/src/common/transporter/Transporter.cpp:
Auto merged
ndb/src/common/util/File.cpp:
Auto merged
ndb/src/common/util/SocketClient.cpp:
Auto merged
ndb/src/kernel/blocks/cmvmi/Cmvmi.cpp:
Auto merged
ndb/src/kernel/blocks/dbtc/Dbtc.hpp:
Auto merged
ndb/src/kernel/blocks/qmgr/Qmgr.hpp:
Auto merged
ndb/src/kernel/blocks/qmgr/QmgrMain.cpp:
Auto merged
ndb/src/mgmapi/mgmapi.cpp:
Auto merged
ndb/src/mgmclient/CommandInterpreter.cpp:
Auto merged
ndb/src/mgmsrv/ConfigInfo.cpp:
Auto merged
ndb/src/mgmsrv/MgmtSrvr.cpp:
Auto merged
ndb/src/ndbapi/ClusterMgr.hpp:
Auto merged
ndb/src/ndbapi/Ndb.cpp:
Auto merged
ndb/src/ndbapi/NdbScanOperation.cpp:
Auto merged
ndb/src/ndbapi/SignalSender.cpp:
Auto merged
sql/field.cc:
Auto merged
sql/filesort.cc:
Auto merged
sql/ha_myisammrg.cc:
Auto merged
sql/handler.cc:
Auto merged
sql/item.cc:
Auto merged
sql/item.h:
Auto merged
sql/item_cmpfunc.h:
Auto merged
sql/item_func.cc:
Auto merged
sql/item_strfunc.cc:
Auto merged
sql/item_subselect.h:
Auto merged
sql/item_sum.cc:
Auto merged
sql/item_timefunc.cc:
Auto merged
sql/mysql_priv.h:
Auto merged
sql/net_serv.cc:
Auto merged
sql/opt_range.cc:
Auto merged
sql/opt_range.h:
Auto merged
sql/repl_failsafe.cc:
Auto merged
sql/set_var.cc:
Auto merged
sql/set_var.h:
Auto merged
sql/slave.cc:
Auto merged
sql/sql_class.cc:
Auto merged
sql/sql_insert.cc:
Auto merged
sql/sql_lex.cc:
Auto merged
sql/sql_lex.h:
Auto merged
sql/sql_parse.cc:
Auto merged
sql/sql_prepare.cc:
Auto merged
sql/sql_select.cc:
Auto merged
sql/sql_show.cc:
Auto merged
sql/sql_table.cc:
Auto merged
sql/sql_union.cc:
Auto merged
sql/sql_update.cc:
Auto merged
sql-common/client.c:
Auto merged
sql/sql_view.cc:
Auto merged
sql/sql_yacc.yy:
Auto merged
sql/table.cc:
Auto merged
sql/unireg.cc:
Auto merged
extra/yassl/taocrypt/src/asn.cpp:
Manual merge (Fix shadowed variable name)
extra/yassl/taocrypt/test/test.cpp:
No changes
ndb/src/common/util/ConfigValues.cpp:
Manual merge (Fix shadowed variable name)
sql/field.h:
manual merge
sql/ha_myisam.cc:
manual merge
sql/ha_ndbcluster.cc:
manual merge
sql/item_cmpfunc.cc:
manual merge
sql/item_subselect.cc:
Manual merge (Fix shadowed variable name)
sql/mysqld.cc:
no changes
into janus.mylan:/usr/home/serg/Abk/mysql-5.1
dbug/dbug.c:
Auto merged
include/my_base.h:
Auto merged
include/my_global.h:
Auto merged
sql/event_db_repository.cc:
Auto merged
sql/ha_ndbcluster.cc:
Auto merged
sql/ha_ndbcluster.h:
Auto merged
sql/ha_partition.cc:
Auto merged
sql/handler.cc:
Auto merged
sql/item_subselect.cc:
Auto merged
sql/log.cc:
Auto merged
sql/log_event.cc:
Auto merged
sql/mysql_priv.h:
Auto merged
sql/opt_range.h:
Auto merged
sql/opt_sum.cc:
Auto merged
sql/slave.cc:
Auto merged
sql/slave.h:
Auto merged
sql/sp.cc:
Auto merged
sql/sql_insert.cc:
Auto merged
sql/sql_plugin.cc:
Auto merged
sql/sql_select.cc:
Auto merged
sql/sql_servers.cc:
Auto merged
sql/sql_servers.h:
Auto merged
sql/table.cc:
Auto merged
sql/table.h:
Auto merged
sql/tztime.cc:
Auto merged
storage/heap/ha_heap.cc:
Auto merged
storage/myisammrg/ha_myisammrg.cc:
Auto merged
support-files/Makefile.am:
Auto merged
sql/opt_range.cc:
manual merge
storage/example/ha_example.cc:
manual merge
storage/federated/ha_federated.cc:
manual merge
storage/myisam/ha_myisam.cc:
manual merge
storage/myisam/mi_rkey.c:
manual merge
UPDATE contains wrong data if the SELECT employs a temporary table.
If the UPDATE values of the INSERT .. SELECT .. ON DUPLICATE KEY UPDATE
statement contains fields from the SELECT part and the select employs a
temporary table then those fields will contain wrong values because they
aren't corrected to get data from the temporary table.
The solution is to add these fields to the selects all_fields list,
to store pointers to those fields in the selects ref_pointer_array and
to access them via Item_ref objects.
The substitution for Item_ref objects is done in the new function called
Item_field::update_value_transformer(). It is called through the
item->transform() mechanism at the end of the select_insert::prepare()
function.
sql/item.cc:
Bug#16630: The update fields of the INSERT .. SELECT .. ON DUPLICATE KEY
UPDATE contains wrong data if the SELECT employs a temporary table.
The new method Item_field::update_value_transformer() is added. It
substitutes fields in the update values list for references
(Item_ref objects) to them.
sql/item.h:
Bug#16630: The update fields of the INSERT .. SELECT .. ON DUPLICATE KEY
UPDATE contains wrong data if the SELECT employs a temporary table.
The update_value_transformer() method is added to the Item and to the
Item_field classes.
sql/sql_insert.cc:
Bug#16630: The update fields of the INSERT .. SELECT .. ON DUPLICATE KEY
UPDATE contains wrong data if the SELECT employs a temporary table.
Traverse update values and substitute fields from the select for
references (Item_ref objects) to them.
sql/sql_select.cc:
Bug#16630: The update fields of the INSERT .. SELECT .. ON DUPLICATE KEY
UPDATE contains wrong data if the SELECT employs a temporary table.
Traverse update values and substitute fields from the select for
references (Item_ref objects) to them.
mysql-test/r/insert_select.result:
Added a test case for bug#16630: The update fields of the INSERT .. SELECT ..
ON DUPLICATE KEY UPDATE contains wrong data if the SELECT employs a
temporary table.
mysql-test/t/insert_select.test:
Added a test case for bug#16630: The update fields of the INSERT .. SELECT ..
ON DUPLICATE KEY UPDATE contains wrong data if the SELECT employs a
temporary table.
UPDATE contains wrong data if the SELECT employs a temporary table.
If the UPDATE values of the INSERT .. SELECT .. ON DUPLICATE KEY UPDATE
statement contains fields from the SELECT part and the select employs a
temporary table then those fields will contain wrong values because they
aren't corrected to get data from the temporary table.
The solution is to add these fields to the selects all_fields list,
to store pointers to those fields in the selects ref_pointer_array and
to access them via Item_ref objects.
The substitution for Item_ref objects is done in the new function called
Item_field::update_value_transformer(). It is called through the
item->transform() mechanism at the end of the select_insert::prepare()
function.
were evaluated.
According to the new rules for string comparison partial indexes on text
columns can be used in the same cases when partial indexes on varchar
columns can be used.
mysql-test/r/endspace.result:
Adjusted results after the fix for bug #25971.
mysql-test/r/innodb.result:
Adjusted results after the fix for bug #25971.
mysql-test/r/myisam.result:
Adjusted results after the fix for bug #25971.
mysql-test/r/select.result:
Added a test case for bug #25971.
mysql-test/r/type_blob.result:
Adjusted results after the fix for bug #25971.
mysql-test/t/select.test:
Added a test case for bug #25971.
were evaluated.
According to the new rules for string comparison partial indexes on text
columns can be used in the same cases when partial indexes on varchar
columns can be used.
into olga.mysql.com:/home/igor/mysql-5.1-opt
BitKeeper/etc/gone:
auto-union
mysys/my_getopt.c:
Auto merged
sql/field.h:
Auto merged
sql/item.cc:
Auto merged
sql/item_cmpfunc.cc:
Auto merged
sql/item_cmpfunc.h:
Auto merged
sql/mysql_priv.h:
Auto merged
sql/sql_prepare.cc:
Auto merged
sql/sql_select.cc:
Auto merged
sql/table.cc:
Auto merged
mysql-test/r/select.result:
SCCS merged
mysql-test/t/select.test:
SCCS merged
into bk-internal.mysql.com:/data0/bk/mysql-5.0-opt
BitKeeper/etc/gone:
auto-union
mysys/my_getopt.c:
Auto merged
sql/field.h:
Auto merged
sql/item.cc:
Auto merged
sql/item_cmpfunc.cc:
Auto merged
sql/item_cmpfunc.h:
Auto merged
sql/mysql_priv.h:
Auto merged
sql/sql_prepare.cc:
Auto merged
sql/sql_select.cc:
Auto merged
sql/table.cc:
Auto merged
mysql-test/r/select.result:
Manual merge
mysql-test/t/select.test:
Manual merge
into zippy.cornsilk.net:/home/cmiller/work/mysql/mysql-4.1-maint
sql/item.cc:
Auto merged
sql/item_cmpfunc.cc:
Auto merged
sql/item_cmpfunc.h:
Auto merged
sql/sql_select.cc:
Auto merged
into olga.mysql.com:/home/igor/mysql-5.1-opt
BitKeeper/etc/gone:
auto-union
mysql-test/r/insert_select.result:
Auto merged
mysql-test/r/join_outer.result:
Auto merged
mysql-test/r/select.result:
Auto merged
mysql-test/r/view.result:
Auto merged
mysql-test/t/insert_select.test:
Auto merged
mysql-test/t/join_outer.test:
Auto merged
mysql-test/t/select.test:
Auto merged
mysys/my_getopt.c:
Auto merged
sql/field.h:
Auto merged
sql/field_conv.cc:
Auto merged
sql/item.cc:
Auto merged
sql/item_cmpfunc.cc:
Auto merged
sql/item_cmpfunc.h:
Auto merged
sql/item_func.cc:
Auto merged
sql/sql_lex.cc:
Auto merged
sql/sql_prepare.cc:
Auto merged
sql/sql_select.cc:
Auto merged
sql/sql_show.cc:
Auto merged
sql/sql_view.cc:
Auto merged
sql/table.cc:
Auto merged
sql/table.h:
Auto merged
mysql-test/include/mix1.inc:
Manual merge
mysql-test/r/information_schema.result:
Manual merge
mysql-test/r/innodb_mysql.result:
Manual merge
mysql-test/t/information_schema.test:
Manual merge
mysql-test/t/view.test:
Manual merge
mysys/my_pthread.c:
Manual merge
sql/mysql_priv.h:
Manual merge
sql/opt_range.cc:
Manual merge
sql/sql_insert.cc:
Manual merge
sql/sql_update.cc:
Manual merge
The crash happens because second filling of the same I_S table happens in
case of subselect with order by. table->sort.io_cache previously allocated
in create_sort_index() is deleted during second filling
(function get_schema_tables_result). There are two places where
I_S table can be filled: JOIN::exec and create_sort_index().
To fix the bug we should check if the table was already filled
in one of these places and skip processing of the table in second.
mysql-test/r/information_schema.result:
test case
mysql-test/t/information_schema.test:
test case
sql/mysql_priv.h:
added new parameter 'executed_place' to function get_schema_tables_result()
sql/sql_select.cc:
added new parameter 'executed_place' to function get_schema_tables_result()
sql/sql_show.cc:
added more accurate check for cases when we need to refresh I_S table
sql/table.cc:
added more accurate check for cases when we need to refresh I_S table
sql/table.h:
added more accurate check for cases when we need to refresh I_S table
The crash happens because second filling of the same I_S table happens in
case of subselect with order by. table->sort.io_cache previously allocated
in create_sort_index() is deleted during second filling
(function get_schema_tables_result). There are two places where
I_S table can be filled: JOIN::exec and create_sort_index().
To fix the bug we should check if the table was already filled
in one of these places and skip processing of the table in second.
The function make_unireg_sortorder ignored the fact that any
view field is represented by a 'ref' object.
This could lead to wrong results for the queries containing
both GROUP BY and ORDER BY clauses.
mysql-test/r/view.result:
Added a test case for bug #26209.
mysql-test/t/view.test:
Added a test case for bug #26209.
The function make_unireg_sortorder ignored the fact that any
view field is represented by a 'ref' object.
This could lead to wrong results for the queries containing
both GROUP BY and ORDER BY clauses.
into neptunus.(none):/home/msvensson/mysql/mysql-5.1-maint
BitKeeper/etc/ignore:
auto-union
Makefile.am:
Auto merged
cmd-line-utils/readline/display.c:
Auto merged
configure.in:
Auto merged
extra/yassl/include/buffer.hpp:
Auto merged
extra/yassl/include/crypto_wrapper.hpp:
Auto merged
extra/yassl/include/yassl_imp.hpp:
Auto merged
extra/yassl/include/yassl_int.hpp:
Auto merged
extra/yassl/src/crypto_wrapper.cpp:
Auto merged
extra/yassl/taocrypt/include/algebra.hpp:
Auto merged
extra/yassl/taocrypt/include/des.hpp:
Auto merged
extra/yassl/taocrypt/include/hash.hpp:
Auto merged
extra/yassl/taocrypt/include/hmac.hpp:
Auto merged
extra/yassl/taocrypt/include/modarith.hpp:
Auto merged
extra/yassl/taocrypt/include/modes.hpp:
Auto merged
extra/yassl/taocrypt/include/rsa.hpp:
Auto merged
extra/yassl/taocrypt/include/type_traits.hpp:
Auto merged
extra/yassl/taocrypt/mySTL/list.hpp:
Auto merged
extra/yassl/taocrypt/src/aes.cpp:
Auto merged
extra/yassl/taocrypt/src/algebra.cpp:
Auto merged
extra/yassl/taocrypt/src/asn.cpp:
Auto merged
extra/yassl/testsuite/testsuite.cpp:
Auto merged
mysql-test/mysql-test-run.pl:
Auto merged
mysql-test/r/mysqltest.result:
Auto merged
mysql-test/t/mysqltest.test:
Auto merged
mysys/default.c:
Auto merged
sql/field.cc:
Auto merged
sql/item.cc:
Auto merged
sql/item_cmpfunc.cc:
Auto merged
sql/item_cmpfunc.h:
Auto merged
sql/item_sum.cc:
Auto merged
sql/mysql_priv.h:
Auto merged
sql/net_serv.cc:
Auto merged
sql/repl_failsafe.cc:
Auto merged
sql/set_var.cc:
Auto merged
sql/set_var.h:
Auto merged
sql/slave.cc:
Auto merged
sql/sql_parse.cc:
Auto merged
sql-common/client.c:
Auto merged
sql/sql_select.cc:
Auto merged
extra/yassl/taocrypt/test/test.cpp:
Manual merge
mysql-test/r/grant.result:
Manual merge
mysql-test/r/select.result:
Manual merge
mysql-test/t/grant.test:
Manual merge
mysql-test/t/select.test:
Manual merge
sql/field.h:
Manual merge
sql/mysqld.cc:
Manual merge
into neptunus.(none):/home/msvensson/mysql/mysql-5.0-maint
Makefile.am:
Auto merged
configure.in:
Auto merged
mysql-test/mysql-test-run.pl:
Auto merged
mysys/default.c:
Auto merged
sql/item.cc:
Auto merged
sql/item_cmpfunc.cc:
Auto merged
sql/item_cmpfunc.h:
Auto merged
sql/mysql_priv.h:
Auto merged
sql/mysqld.cc:
Auto merged
sql/sql_parse.cc:
Auto merged
sql/sql_select.cc:
Auto merged
mysql-test/r/select.result:
Manual merge
mysql-test/t/select.test:
Manual merge
On some compiler/platform combination, an assignment of form *p= *p
would map to a memcpy() call, and Valgrind flags this as an overlapped
memcpy() error.
Fix by prefixing *p= *q with if(p!=q) when building for Valgrind
(HAVE_purify).
sql/sql_select.cc:
Fix false valgrind warning.
On some compiler/platform combination, an assignment of form *p= *p
would map to a memcpy() call, and Valgrind flags this as an overlapped
memcpy() error.
Fix by prefixing *p= *q with if(p!=q) when building for Valgrind
(HAVE_purify).
into a88-113-38-195.elisa-laajakaista.fi:/home/my/bk/mysql-5.1
BUILD/SETUP.sh:
Auto merged
client/mysql.cc:
Auto merged
configure.in:
Auto merged
libmysqld/lib_sql.cc:
Auto merged
sql/filesort.cc:
Auto merged
sql/ha_ndbcluster.cc:
Auto merged
sql/handler.cc:
Auto merged
sql/item.cc:
Auto merged
sql/item.h:
Auto merged
sql/item_cmpfunc.cc:
Auto merged
sql/item_cmpfunc.h:
Auto merged
sql/item_func.cc:
Auto merged
sql/item_subselect.cc:
Auto merged
sql/item_timefunc.cc:
Auto merged
sql/mysql_priv.h:
Auto merged
sql/opt_range.cc:
Auto merged
sql/sql_class.cc:
Auto merged
sql/sql_lex.h:
Auto merged
sql/sql_parse.cc:
Auto merged
sql/sql_plugin.cc:
Auto merged
sql/sql_select.cc:
Auto merged
sql/sql_show.cc:
Auto merged
sql/sql_yacc.yy:
Auto merged
sql/table.cc:
Auto merged
storage/archive/ha_archive.cc:
Auto merged
plugin/daemon_example/daemon_example.cc:
Merged with main 5.1
sql/mysqld.cc:
Merged with main 5.1
into mysql.com:/home/gluh/MySQL/Merge/5.1-opt
mysql-test/r/distinct.result:
Auto merged
mysql-test/r/join_nested.result:
Auto merged
mysql-test/r/null_key.result:
Auto merged
mysql-test/r/select.result:
Auto merged
mysql-test/r/subselect.result:
Auto merged
mysql-test/r/subselect3.result:
Auto merged
mysql-test/r/trigger.result:
Auto merged
mysql-test/t/select.test:
Auto merged
mysql-test/t/subselect.test:
Auto merged
mysql-test/t/trigger.test:
Auto merged
sql/filesort.cc:
Auto merged
sql/item.cc:
Auto merged
sql/item.h:
Auto merged
sql/item_cmpfunc.cc:
Auto merged
sql/item_cmpfunc.h:
Auto merged
sql/item_func.cc:
Auto merged
sql/item_subselect.cc:
Auto merged
sql/item_timefunc.cc:
Auto merged
sql/mysql_priv.h:
Auto merged
sql/opt_sum.cc:
Auto merged
sql/sql_base.cc:
Auto merged
sql/sql_parse.cc:
Auto merged
sql/sql_select.cc:
Auto merged
sql/sql_show.cc:
Auto merged
sql/sql_yacc.yy:
Auto merged
sql/table.cc:
Auto merged
mysql-test/r/func_time.result:
manual merge
mysql-test/r/information_schema.result:
manual merge
mysql-test/t/func_time.test:
manual merge
mysql-test/t/information_schema.test:
manual merge
sql/opt_range.cc:
manual merge
sql/sql_delete.cc:
manual merge
sql/sql_lex.h:
manual merge
into zippy.cornsilk.net:/home/cmiller/work/mysql/mysql-5.1-maint
BitKeeper/etc/ignore:
auto-union
Makefile.am:
Auto merged
configure.in:
Auto merged
mysql-test/mysql-test-run.pl:
Auto merged
mysql-test/r/innodb.result:
Auto merged
mysql-test/r/range.result:
Auto merged
mysql-test/r/select.result:
Auto merged
mysql-test/t/innodb.test:
Auto merged
mysql-test/t/select.test:
Auto merged
mysys/string.c:
Auto merged
scripts/mysql_create_system_tables.sh:
Auto merged
scripts/mysqld_multi.sh:
Auto merged
sql/item.cc:
Auto merged
sql/item_cmpfunc.cc:
Auto merged
sql/item_cmpfunc.h:
Auto merged
sql/mysql_priv.h:
Auto merged
sql/mysqld.cc:
Auto merged
sql/sql_parse.cc:
Auto merged
sql/sql_select.cc:
Auto merged
into zippy.cornsilk.net:/home/cmiller/work/mysql/mysql-5.0-maint
configure.in:
Auto merged
mysql-test/mysql-test-run.pl:
Auto merged
mysql-test/r/range.result:
Auto merged
mysql-test/r/select.result:
Auto merged
mysql-test/t/select.test:
Auto merged
scripts/mysqld_multi.sh:
Auto merged
sql/item.cc:
Auto merged
sql/item_cmpfunc.cc:
Auto merged
sql/item_cmpfunc.h:
Auto merged
sql/mysql_priv.h:
Auto merged
sql/mysqld.cc:
Auto merged
sql/sql_select.cc:
Auto merged
into mysql.com:/home/ram/work/b19690/b19690.5.1
mysql-test/r/type_float.result:
Auto merged
mysql-test/t/type_float.test:
Auto merged
sql/field.cc:
Auto merged
sql/init.cc:
Auto merged
sql/item_cmpfunc.cc:
Auto merged
sql/item_cmpfunc.h:
Auto merged
sql/mysql_priv.h:
Auto merged
sql/mysqld.cc:
Auto merged
sql/field.h:
merging
sql/item_sum.cc:
merging
sql/sql_select.cc:
merging
The optimizer takes away columns from GROUP BY/DISTINCT if they constitute
all the parts of an unique index.
However if some of the columns can contain NULLs this cannot be done
(because an UNIQUE index can have multiple rows with NULL values).
Fixed by not using UNIQUE indexes with nullable columns to remove
grouping columns from GROUP BY/DISTINCT.
mysql-test/r/distinct.result:
Bug #25551: inconsistent behaviour in grouping NULL, depending on index type
- test case
mysql-test/t/distinct.test:
Bug #25551: inconsistent behaviour in grouping NULL, depending on index type
- test case
sql/sql_select.cc:
Bug #25551: inconsistent behaviour in grouping NULL, depending on index type
- UNIQUE NULL indices don't guarantee GROUP BY/DISTINCT.
