can be specified
Currently MySQL allows one to specify what indexes to ignore during
join optimization. The scope of the current USE/FORCE/IGNORE INDEX
statement is only the FROM clause, while all other clauses are not
affected.
However, in certain cases, the optimizer
may incorrectly choose an index for sorting and/or grouping, and
produce an inefficient query plan.
This task provides the means to specify what indexes are
ignored/used for what operation in a more fine-grained manner, thus
making it possible to manually force a better plan. We do this
by extending the current IGNORE/USE/FORCE INDEX syntax to:
IGNORE/USE/FORCE INDEX [FOR {JOIN | ORDER | GROUP BY}]
so that:
- if no FOR is specified, the index hint will apply everywhere.
- if MySQL is started with the compatibility option --old_mode then
an index hint without a FOR clause works as in 5.0 (i.e, the
index will only be ignored for JOINs, but can still be used to
compute ORDER BY).
See the WL#3527 for further details.
BitKeeper/deleted/.del-mysqld.cc.rej:
Rename: sql/mysqld.cc.rej -> BitKeeper/deleted/.del-mysqld.cc.rej
BitKeeper/deleted/.del-sql_parse.cc.rej:
Rename: sql/sql_parse.cc.rej -> BitKeeper/deleted/.del-sql_parse.cc.rej
BitKeeper/deleted/.del-table.cc.rej:
Rename: sql/table.cc.rej -> BitKeeper/deleted/.del-table.cc.rej
mysql-test/r/endspace.result:
WL3527 : fixed undeterministic test
mysql-test/r/group_by.result:
WL#3527: test cases
mysql-test/t/endspace.test:
WL3527 : fixed undeterministic test
mysql-test/t/group_by.test:
WL#3527: test cases
sql/item.cc:
WL#3527: renames
sql/mysql_priv.h:
WL#3527: corrected initialization
sql/mysqld.cc:
WL#3527: added old_mode command line option
sql/opt_range.cc:
WL#3527: renames
sql/sql_base.cc:
WL#3527:
- renames
- correct initialization
- extended the processing of USE/FORCE/IGNORE index
sql/sql_class.h:
WL#3527: added old_mode command line option
sql/sql_delete.cc:
WL#3527: renames
sql/sql_help.cc:
WL#3527: renames
sql/sql_lex.cc:
WL#3527: extended parsing of USE/FORCE/IGNORE index
sql/sql_lex.h:
WL#3527: extended parsing of USE/FORCE/IGNORE index
sql/sql_parse.cc:
WL#3527: extended parsing of USE/FORCE/IGNORE index
sql/sql_select.cc:
WL#3527:
- renames
- passing additional info to support the extended
USE/FORCE/IGNORE INDEX syntax
- If there is a covering index, and we have
IGNORE INDEX FOR GROUP/ORDER, and this index is
used for the JOIN part, then we have to ignore the
IGNORE INDEX FOR GROUP/ORDER.
sql/sql_show.cc:
WL#3527: passing additional info to support the extended
USE/FORCE/IGNORE INDEX syntax
sql/sql_update.cc:
WL#3527: renames
sql/sql_yacc.yy:
WL#3527: extended parsing of USE/FORCE/IGNORE index
sql/table.cc:
WL#3527: extended the processing of USE/FORCE/IGNORE index
sql/table.h:
WL#3527: extended the processing of USE/FORCE/IGNORE index
storage/myisam/ha_myisam.cc:
WL#3527: extended the processing of USE/FORCE/IGNORE index
sql/ha_ndbcluster.cc:
add/drop index online will change storage media type,
so add storage type check in check_if_incompatible_data(),
when storage type is changed, will create a new table,
then this can correct the column and table's storage type.
Using INSERT DELAYED on MERGE tables could lead to table
corruptions.
The manual lists a couple of storage engines, which can be
used with INSERT DELAYED. MERGE is not in this list.
The attempt to try it anyway has not been rejected yet.
This bug was not detected earlier as it can work under
special circumstances. Most notable is low concurrency.
To be safe, this patch rejects any attempt to use INSERT
DELAYED on MERGE tables.
mysql-test/r/merge.result:
Bug#26464 - insert delayed + update + merge = corruption
Added test result.
mysql-test/t/merge.test:
Bug#26464 - insert delayed + update + merge = corruption
Added test.
sql/ha_myisammrg.h:
Bug#26464 - insert delayed + update + merge = corruption
Removed HA_CAN_INSERT_DELAYED flag from table_flags().
The insert delayed thread upgrades the lock from the first
entry in MYSQL_LOCK::locks only. Hence it is incapable to
handle MERGE tables, which have as many entries in this
array as they have MyISAM sub-tables.
The flag alias_name_used was not set on for the outer references
in subqueries. It resulted in replacement of any outer reference
resolved against an alias for a full field name when the frm
representation of a view with a subquery was generated.
If the subquery and the outer query referenced the same table in
their from lists this replacement effectively changed the meaning
of the view and led to wrong results for selects from this view.
Modified several functions to ensure setting the right value of
the alias_name_used flag for outer references resolved against
aliases.
mysql-test/r/view.result:
Added a test case for bug #26560.
mysql-test/t/view.test:
Added a test case for bug #26560.
sql/item.cc:
Fixed bug #26560.
Made the function resolve_ref_in_select_and_group analyze the return
value of the last parameter with the type of the name resolution for
the submitted reference. If the reference has been resolved against
an alias name from select list then its flag alias_name_used is set on.
Now this value is used in Item_field::fix_outer_field to initialize the flag
when the item_ref object is created for an outer reference.
Added a parameter for the second Item_ref::Item_ref constructor to initialize
properly the flag alias_name_used. The default value of the parameter is FALSE.
If this flag is set on at the creation of an object by this constructor it
will never be changed. Corrected appropriately the Item_ref::set_properties
function.
The function Item_ref::print now prints alias name for an outer reference
if the flag alias_name_used is set on.
sql/item.h:
Fixed bug #26560.
Added a parameter for the second Item_ref::Item_ref constructor to initialize
properly the flag alias_name_used. The default value of the parameter is FALSE.
A similar change has been applied to the first Item_direct_ref::Item_direct_ref
constructor.
sql/mysql_priv.h:
Fixed bug #26560.
Added an an enumeration type enum_resolution_type to return info on
how the function find_item_in_list has resolved the submitted item.
The type is used only for this function.
sql/sql_base.cc:
Fixed bug #26560.
Made the last parameter of the function find_field_in_tables return
more detailed information on how the submitted item has been resolved.
Now it says whether the item has been resolved
against an alias name,
or as a field name without alias,
or as a field name hidden by alias,
or was resolved ignoring alias.
sql/sql_select.cc:
Fixed bug #26560.
Took into account the new type of the last parameter of the function
find_item_in_list.
When the ORDER BY clause gets fixed it's allowed to search in the current
item_list in order to find aliased fields and expressions. This is ok for a
SELECT but wrong for an UPDATE statement. If the ORDER BY clause will
contain a non-existing field which is mentioned in the UPDATE set list
then the server will crash due to using of non-existing (0x0) field.
When an Item_field is getting fixed it's allowed to search item list for
aliased expressions and fields only for selects.
sql/sql_base.cc:
Bug#25126: Wrongly resolved field leads to a crash.
When an Item_field is getting fixed it's allowed to search item list for
aliased expressions and fields only for selects.
sql/sql_select.cc:
Bug#25126: Wrongly resolved field leads to a crash.
When an Item_field is getting fixed it's allowed to search item list for
aliased expressions and fields only for selects.
mysql-test/r/update.result:
Added a test case for bug#25126: Wrongly resolved field leads to a crash.
mysql-test/t/update.test:
Added a test case for bug#25126: Wrongly resolved field leads to a crash.
Several problems here :
1. The conversion to double of an hex string const item
was not taking into account the unsigned flag.
2. IN was not behaving in the same was way as comparisons
when performed over an INT/DATE/DATETIME/TIMESTAMP column
and a constant. The ordinary comparisons in that case
convert the constant to an INTEGER value and do int
comparisons. Fixed the IN to do the same.
3. IN is not taking into account the unsigned flag when
calculating <expr> IN (<int_const1>, <int_const2>, ...).
Extended the implementation of IN to store and process
the unsigned flag for its arguments.
mysql-test/r/func_in.result:
Bug #19342: test case
mysql-test/t/func_in.test:
Bug #19342: test case
sql/item.h:
Bug #19342: correct handling of sign in conersion to real.
sql/item_cmpfunc.cc:
Bug #19342: exteneded the IN values list
to support unsigned longlong values.
Correct comparison of integers in IN with
regard of signedness.
Compare DATE/DATETIME/TIMESTAMP values as
integers in IN.
sql/item_cmpfunc.h:
Bug #19342: exteneded the IN values list
to support unsigned longlong values.
Correct comparison of integers in IN with
regard of signedness.
into mysql.com:/home/tnurnberg/21103/51-21103
mysql-test/r/func_time.result:
Auto merged
mysql-test/r/ps_2myisam.result:
Auto merged
mysql-test/r/ps_3innodb.result:
Auto merged
mysql-test/r/ps_4heap.result:
Auto merged
mysql-test/r/ps_5merge.result:
Auto merged
mysql-test/r/ps_7ndb.result:
Auto merged
mysql-test/t/func_time.test:
Auto merged
sql/field.cc:
Auto merged
If we compare two items A and B, with B being (a constant) of a
larger type, then A gets promoted to B's type for comparison if
it's a constant, function, or CAST() column, but B gets demoted
to A's type if A is a (not explicitly CAST()) column. This is
counter-intuitive and not mandated by the standard.
Disabling optimisation where it would be lossy so field value
will properly get promoted and compared as binary string (rather
than as integers).
mysql-test/include/ps_conv.inc:
Bug #21103: DATE column not compared as DATE
When comparing a DATE field with a DATETIME constant, we now compare
as DATETIMEs, not as DATEs. Fix certain queries to still work.
mysql-test/r/func_time.result:
Bug #21103: DATE column not compared as DATE
When comparing a DATE field with a DATETIME constant, we now compare
as DATETIMEs, not as DATEs. Show that everything works as expected.
mysql-test/r/ps_2myisam.result:
Bug #21103: DATE column not compared as DATE
When comparing a DATE field with a DATETIME constant, we now compare
as DATETIMEs, not as DATEs. Fix certain queries to still work.
mysql-test/r/ps_3innodb.result:
Bug #21103: DATE column not compared as DATE
When comparing a DATE field with a DATETIME constant, we now compare
as DATETIMEs, not as DATEs. Fix certain queries to still work.
mysql-test/r/ps_4heap.result:
Bug #21103: DATE column not compared as DATE
When comparing a DATE field with a DATETIME constant, we now compare
as DATETIMEs, not as DATEs. Fix certain queries to still work.
mysql-test/r/ps_5merge.result:
Bug #21103: DATE column not compared as DATE
When comparing a DATE field with a DATETIME constant, we now compare
as DATETIMEs, not as DATEs. Fix certain queries to still work.
mysql-test/r/ps_7ndb.result:
Bug #21103: DATE column not compared as DATE
When comparing a DATE field with a DATETIME constant, we now compare
as DATETIMEs, not as DATEs. Fix certain queries to still work.
mysql-test/t/func_time.test:
Bug #21103: DATE column not compared as DATE
When comparing a DATE field with a DATETIME constant, we now compare
as DATETIMEs, not as DATEs. Show that everything works as expected.
sql/field.cc:
Bug #21103: DATE column not compared as DATE
#0 stores the date only as a 3-byte integer; save_in_field() in
#1 saves 'this' in field's format (DATE), #2 "converts a constant
item to an int and replaces the original item" -- consequently,
this replaces the Item_string "2006-11-06 04:08:36.0" with the
Item_int_with_ref 20061106.
#0 Field_newdate::store (this=0x8d26880, from=0x8d5e658 "2006-11-06
04:08:36.0", len=21, cs=0x88022c0) at field.cc:5344
#1 0x0817e3b0 in Item_string::save_in_field (this=0x8d5e670, field=0x8d26880, no_conversions=true) at item.cc:4340
#2 0x081b22ae in convert_constant_item (thd=0x8d25240, field=0x8d26880, item=0x8d5e74c) at item_cmpfunc.cc:245
#3 0x081b8a36 in Item_bool_func2::fix_length_and_dec (this=0x8d5e6f8) at item_cmpfunc.cc:309
#4 0x081a3427 in Item_func::fix_fields (this=0x8d5e6f8, thd=0x8d25240, ref=0x8d5f5fc) at item_func.cc:190
#5 0x0825bc2d in setup_conds (thd=0x8d25240, tables=0x8d5e410, leaves=0x8d5e410, conds=0x8d5f5fc) at sql_base.cc:4941
...
Disabling optimisation where it would be lossy so field value will
properly get promoted and compared as binary string (rather than as
integers).
sql/sql_yacc.yy:
Rename: YYERROR_UNLESS -> YYABORT_UNLESS
yyerror doesn't have to abort of the parser, whereas this macro
does explicitly call YYABORT.
Item_func_geometry_from_text::val_str() should set null_value
in case of wrong data.
mysql-test/include/gis_generic.inc:
after merge fix
Item_func_geometry_from_text::val_str() should set null_value
in case of wrong data.
mysql-test/r/archive_gis.result:
after merge fix
Item_func_geometry_from_text::val_str() should set null_value
in case of wrong data.
mysql-test/r/gis.result:
after merge fix
Item_func_geometry_from_text::val_str() should set null_value
in case of wrong data.
mysql-test/r/innodb_gis.result:
after merge fix
Item_func_geometry_from_text::val_str() should set null_value
in case of wrong data.
mysql-test/r/ndb_gis.result:
after merge fix
Item_func_geometry_from_text::val_str() should set null_value
in case of wrong data.
mysql-test/t/gis.test:
after merge fix
Item_func_geometry_from_text::val_str() should set null_value
in case of wrong data.
sql/item_geofunc.cc:
after merge fix
Item_func_geometry_from_text::val_str() should set null_value
in case of wrong data.
to return NULL for non-NULL arguments.
This is not the case as it can return NULL
for invalid hexidecimal strings.
Fixed by setting the maybe_null flag.
mysql-test/r/func_str.result:
Bug #26537: test case
mysql-test/t/func_str.test:
Bug #26537: test case
sql/item_strfunc.h:
Bug #26537: item_unhex() can return NULLs
even for guaranteed non-null arguments.
results)
Before this fix, the function BENCHMARK() would fail to evaluate expressions
like "(select avg(a) from t1)" in debug builds (with an assert),
or would report a time of zero in non debug builds.
The root cause is that evaluation of DECIMAL_RESULT expressions was not
supported in Item_func_benchmark::val_int().
This has been fixed by this change.
mysql-test/r/func_misc.result:
Added support for DECIMAL_RESULT in Item_func_benchmark::val_int()
mysql-test/t/func_misc.test:
Added support for DECIMAL_RESULT in Item_func_benchmark::val_int()
sql/item_func.cc:
Added support for DECIMAL_RESULT in Item_func_benchmark::val_int()
into moonbone.local:/mnt/gentoo64/work/25122-bug-5.0-opt-mysql
sql/mysql_priv.h:
Auto merged
sql/sql_base.cc:
Auto merged
sql/sql_delete.cc:
Auto merged
sql/sql_insert.cc:
Auto merged
sql/sql_load.cc:
Auto merged
sql/sql_parse.cc:
Auto merged
sql/sql_update.cc:
Auto merged
When INSERT is done over a view the table being inserted into is
checked to be unique among all views tables. But if the view contains
self-joined table an error will be thrown even if all tables are used under
different aliases.
The unique_table() function now also checks tables' aliases when needed.
sql/mysql_priv.h:
Bug#25122: Views based on a self-joined table aren't insertable.
Updated prototype of the unique_table() function.
sql/sql_base.cc:
Bug#25122: Views based on a self-joined table aren't insertable.
Now the unique_table() function checks tables' aliases when needed.
sql/sql_delete.cc:
Bug#25122: Views based on a self-joined table aren't insertable.
Updated calls to the unique_table() function.
sql/sql_insert.cc:
Bug#25122: Views based on a self-joined table aren't insertable.
Updated calls to the unique_table() function.
sql/sql_load.cc:
Bug#25122: Views based on a self-joined table aren't insertable.
Updated calls to the unique_table() function.
sql/sql_parse.cc:
Bug#25122: Views based on a self-joined table aren't insertable.
Updated calls to the unique_table() function.
sql/sql_update.cc:
Bug#25122: Views based on a self-joined table aren't insertable.
Updated calls to the unique_table() function.
into weblab.(none):/home/marcsql/TREE/mysql-5.0-rt-merge
mysql-test/mysql-test-run.pl:
Auto merged
mysql-test/t/disabled.def:
Auto merged
server-tools/instance-manager/instance_options.cc:
Auto merged
server-tools/instance-manager/mysqlmanager.cc:
Auto merged
sql/item_cmpfunc.cc:
Auto merged
sql/item_cmpfunc.h:
Auto merged
sql/item_subselect.cc:
Auto merged
sql/item_subselect.h:
Auto merged
sql/sp_head.cc:
Auto merged
sql/sql_base.cc:
Auto merged
sql/sql_class.cc:
Auto merged
sql/sql_lex.cc:
Auto merged
sql/sql_lex.h:
Auto merged
sql/sql_parse.cc:
Auto merged
sql/sql_yacc.yy:
Auto merged
into pilot.blaudden:/home/msvensson/mysql/mysql-5.0-maint
BitKeeper/etc/ignore:
auto-union
client/mysqltest.c:
Auto merged
extra/comp_err.c:
Auto merged
include/my_time.h:
Auto merged
mysql-test/r/innodb.result:
Auto merged
mysql-test/r/mysqltest.result:
Auto merged
mysql-test/r/type_blob.result:
Auto merged
mysql-test/t/mysqltest.test:
Auto merged
sql/item.cc:
Auto merged
sql/item_cmpfunc.cc:
Auto merged
sql/item_cmpfunc.h:
Auto merged
sql/item_strfunc.cc:
Auto merged
sql/log.cc:
Auto merged
sql/mysql_priv.h:
Auto merged
sql/mysqld.cc:
Auto merged
sql/set_var.cc:
Auto merged
sql/sql_class.cc:
Auto merged
sql/sql_class.h:
Auto merged
sql/sql_load.cc:
Auto merged
sql/sql_parse.cc:
Auto merged
sql/sql_select.cc:
Auto merged
sql/tztime.cc:
Auto merged
client/mysql_upgrade.c:
Manual merge
mysql-test/mysql-test-run.pl:
Manual merge
mysql-test/r/ctype_cp932.result:
Manual merge
mysql-test/r/mysqlbinlog.result:
Manual merge
mysql-test/t/ctype_cp932.test:
Manual merge
mysql-test/t/mysql.test:
Manual merge
mysql-test/t/mysqlbinlog.test:
Manual merge
into mysql.com:/nfsdisk1/lars/bk/mysql-5.1-new-rpl
mysql-test/r/mysqlbinlog.result:
Auto merged
mysql-test/r/rpl_replicate_do.result:
Auto merged
mysql-test/t/mysqlbinlog.test:
Auto merged
mysql-test/t/rpl_replicate_do.test:
Auto merged
sql/mysql_priv.h:
Auto merged
sql/mysqld.cc:
Auto merged
sql/sql_repl.cc:
Auto merged
sql/sql_trigger.cc:
Auto merged
sql/sql_trigger.h:
Auto merged
sql/slave.cc:
Manual merge
sql/sql_insert.cc:
Manual merge
sql/sql_parse.cc:
Manual merge
sql/sql_yacc.yy:
Manual merge
into pilot.blaudden:/home/msvensson/mysql/mysql-5.1-maint
BitKeeper/etc/ignore:
auto-union
extra/comp_err.c:
Auto merged
include/my_pthread.h:
Auto merged
mysql-test/r/innodb.result:
Auto merged
mysql-test/r/mix2_myisam.result:
Auto merged
mysql-test/r/mysqltest.result:
Auto merged
mysql-test/r/type_blob.result:
Auto merged
mysql-test/t/disabled.def:
Auto merged
mysql-test/t/mysqltest.test:
Auto merged
sql/Makefile.am:
Auto merged
sql/item.cc:
Auto merged
sql/item_cmpfunc.cc:
Auto merged
sql/item_cmpfunc.h:
Auto merged
sql/item_strfunc.cc:
Auto merged
sql/log.cc:
Auto merged
sql/mysql_priv.h:
Auto merged
sql/set_var.cc:
Auto merged
sql/sql_class.cc:
Auto merged
sql/sql_class.h:
Auto merged
sql/sql_parse.cc:
Auto merged
sql/sql_select.cc:
Auto merged
sql/tztime.cc:
Auto merged
client/mysqltest.c:
Manual merge
mysql-test/mysql-test-run.pl:
Manual merge
sql/mysqld.cc:
Manual merge
into mysql.com:/home/bar/mysql-5.1-rpl
mysql-test/r/mysqlbinlog.result:
Auto merged
mysql-test/t/mysqlbinlog.test:
Auto merged
sql/log_event.cc:
Auto merged
sql/log_event.h:
Auto merged
sql/sql_class.cc:
Auto merged
sql/sql_class.h:
Auto merged
sql/sql_load.cc:
Auto merged
sql/sql_yacc.yy:
Auto merged
into mysql.com:/nfsdisk1/lars/MERGE/mysql-5.0-merge
sql/field.cc:
Auto merged
sql/log.cc:
Auto merged
sql/slave.cc:
Auto merged
sql/sql_repl.cc:
Auto merged
sql/slave.cc:
Guard declaration of variable to avoid "unused variable" warning.
sql/sql_repl.cc:
Guard declaration of variable to avoid "unused variable" warning.
sql/ha_archive.cc:
Fixed a warning from unused computed value. This block is
only used in debug mode and changes nothing.
support-files/compiler_warnings.supp:
Disabled a warning from BDB.
