into stella.local:/home2/mydev/mysql-5.1-axmrg
include/my_base.h:
Auto merged
mysql-test/mysql-test-run.pl:
Auto merged
mysql-test/suite/ndb/t/disabled.def:
Auto merged
mysql-test/t/partition.test:
Auto merged
sql/handler.cc:
Auto merged
sql/item_cmpfunc.cc:
Auto merged
sql/slave.cc:
Auto merged
sql/sql_insert.cc:
Auto merged
sql/sql_parse.cc:
Auto merged
sql/sql_select.cc:
Auto merged
sql/sql_table.cc:
Auto merged
sql/sql_yacc.yy:
Auto merged
client/mysql.cc:
Manual merge
mysql-test/suite/rpl/t/disabled.def:
Manual merge
into dl145h.mysql.com:/data0/mkindahl/mysql-5.1-rpl-merge
client/mysql.cc:
Auto merged
mysql-test/mysql-test-run.pl:
Auto merged
mysql-test/r/ctype_ucs.result:
Auto merged
mysql-test/r/mysql.result:
Auto merged
mysql-test/suite/ndb/r/ndb_dd_basic.result:
Auto merged
mysql-test/suite/rpl/r/rpl_extraCol_innodb.result:
Auto merged
mysql-test/suite/rpl/r/rpl_extraCol_myisam.result:
Auto merged
mysql-test/suite/rpl_ndb/r/rpl_ndb_extraCol.result:
Auto merged
mysql-test/t/ctype_uca.test:
Auto merged
mysql-test/t/ctype_ucs.test:
Auto merged
mysql-test/t/innodb.test:
Auto merged
mysql-test/t/mysql.test:
Auto merged
mysql-test/t/partition.test:
Auto merged
mysql-test/t/subselect.test:
Auto merged
sql/field.cc:
Auto merged
sql/ha_ndbcluster.cc:
Auto merged
sql/handler.cc:
Auto merged
sql/item_cmpfunc.cc:
Auto merged
sql/mysqld.cc:
Auto merged
sql/slave.cc:
Auto merged
sql/sql_class.cc:
Auto merged
sql/sql_class.h:
Auto merged
sql/sql_insert.cc:
Auto merged
sql/sql_select.cc:
Auto merged
sql/sql_show.cc:
Auto merged
sql/sql_yacc.yy:
Auto merged
mysql-test/r/innodb.result:
Manual merge.
into mysql.com:/home/gluh/MySQL/Merge/5.1-opt
BitKeeper/etc/ignore:
auto-union
mysql-test/r/events_bugs.result:
Auto merged
mysql-test/r/partition.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/sp.result:
Auto merged
mysql-test/t/partition.test:
Auto merged
mysql-test/t/subselect.test:
Auto merged
mysql-test/t/variables.test:
Auto merged
sql/field.cc:
Auto merged
sql/ha_partition.cc:
Auto merged
sql/item.cc:
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/mysqld.cc:
Auto merged
sql/opt_range.cc:
Auto merged
sql/set_var.cc:
Auto merged
sql/sql_base.cc:
Auto merged
sql/sql_class.cc:
Auto merged
sql/sql_class.h:
Auto merged
sql/sql_partition.cc:
Auto merged
sql/sql_plugin.cc:
Auto merged
sql/sql_select.cc:
Auto merged
sql/sql_udf.cc:
Auto merged
sql/sql_yacc.yy:
Auto merged
sql/share/errmsg.txt:
Auto merged
tests/mysql_client_test.c:
Auto merged
mysql-test/r/select.result:
manual merge
mysql-test/t/select.test:
manual merge
into dl145h.mysql.com:/data0/mkindahl/mysql-5.1-new-rpl
mysql-test/extra/rpl_tests/rpl_extraMaster_Col.test:
Auto merged
mysql-test/mysql-test-run.pl:
Auto merged
mysql-test/suite/rpl/include/rpl_mixed_dml.inc:
Auto merged
mysql-test/suite/rpl/r/rpl_bug31076.result:
Auto merged
mysql-test/suite/rpl/t/rpl_bug31076.test:
Auto merged
mysql-test/suite/rpl/t/rpl_innodb_bug28430.test:
Auto merged
mysql-test/suite/rpl_ndb/t/disabled.def:
Auto merged
sql/field.cc:
Auto merged
sql/ha_ndbcluster.cc:
Auto merged
sql/handler.cc:
Auto merged
sql/log.cc:
Auto merged
sql/log_event.cc:
Auto merged
sql/log_event_old.cc:
Auto merged
sql/mysqld.cc:
Auto merged
sql/slave.cc:
Auto merged
sql/sp_head.cc:
Auto merged
sql/sql_class.cc:
Auto merged
sql/sql_class.h:
Auto merged
sql/sql_insert.cc:
Auto merged
sql/sql_parse.cc:
Auto merged
sql/sql_select.cc:
Auto merged
sql/sql_table.cc:
Auto merged
sql/sql_update.cc:
Auto merged
sql/sql_yacc.yy:
Auto merged
mysql-test/t/partition.test:
Manual merge.
BitKeeper/deleted/.del-rpl_row_extraColmaster_ndb.result~a2c64bae75b49d2:
Manual merge.
mysql-test/suite/rpl/r/rpl_extraColmaster_innodb.result:
Manual merge.
mysql-test/suite/rpl/r/rpl_extraColmaster_myisam.result:
Manual merge.
mysql-test/suite/rpl/t/disabled.def:
Manual merge.
sql/sql_delete.cc:
Manual merge.
into mattiasj-laptop.(none):/home/mattiasj/clones/mysql-5.1-last_with_main
libmysqld/lib_sql.cc:
Auto merged
mysql-test/include/mix1.inc:
Auto merged
mysql-test/r/innodb_mysql.result:
Auto merged
sql/event_scheduler.cc:
Auto merged
sql/events.cc:
Auto merged
sql/ha_ndbcluster_binlog.cc:
Auto merged
sql/handler.cc:
Auto merged
sql/item_func.cc:
Auto merged
sql/slave.cc:
Auto merged
sql/sql_acl.cc:
Auto merged
sql/sql_base.cc:
Auto merged
sql/sql_connect.cc:
Auto merged
sql/sql_insert.cc:
Auto merged
sql/sql_lex.h:
Auto merged
sql/sql_yacc.yy:
Auto merged
Marking statements containing USER() or CURRENT_USER() as unsafe, causing
them to switch to using row-based logging in MIXED mode and generate a
warning in STATEMENT mode.
mysql-test/suite/rpl/r/rpl_switch_stm_row_mixed.result:
Result change.
mysql-test/suite/rpl/t/rpl_switch_stm_row_mixed.test:
Adding test to check that USER() and CURRENT_USER() cause a switch
to row-based logging.
sql/sql_yacc.yy:
Setting statements containing USER() or CURRENT_USER() to be unsafe.
into stella.local:/home2/mydev/mysql-5.1-axmrg
mysql-test/r/ctype_ucs.result:
Auto merged
mysql-test/t/ctype_ucs.test:
Auto merged
mysql-test/t/variables.test:
Auto merged
sql/ha_partition.cc:
Auto merged
sql/item_func.cc:
Auto merged
sql/sql_yacc.yy:
Auto merged
sql/table.cc:
Auto merged
The SET PASSWORD statement is non-transactional (no explicit transaction
boundaries) in nature and hence is forbidden inside stored functions and
triggers, but it weren't being effectively forbidden.
The implemented fix is to issue a implicit commit with every SET PASSWORD
statement, effectively prohibiting these statements in stored functions
and triggers.
mysql-test/r/sp-error.result:
Add test case result for Bug#30904
mysql-test/t/sp-error.test:
Add test case for Bug#30904
sql/sql_lex.h:
Add variable to set that a statement with SET PASSWORD causes a implicit
commit.
sql/sql_parse.cc:
End active transaction in SET PASSWORD.
sql/sql_yacc.yy:
Set the correct flag on SET PASSWORD if inside a SP, thus effectively
prohibiting SET PASSWORD statements in stored functions and triggers.
into gleb.loc:/home/uchum/work/bk/5.1-opt
mysql-test/r/select.result:
Auto merged
mysql-test/r/type_decimal.result:
Auto merged
mysql-test/t/select.test:
Auto merged
mysql-test/t/type_decimal.test:
Auto merged
sql/item.cc:
Auto merged
sql/sql_class.cc:
Auto merged
sql/sql_class.h:
Auto merged
sql/sql_yacc.yy:
Auto merged
sql/share/errmsg.txt:
Merge with 5.0-opt
"Dynamic plugins fail to load on FreeBSD"
ELF executables need to be linked using the -export-dynamic option to
ld(1) for symbols defined in the executable to become visible to dlsym().
Also, do not build plugins on an all-static build.
configure.in:
Bug#30296
Use "-export-dynamic" when building executable for use with plugins.
Add required option using MYSQLD_EXTRA_LDFLAGS variable so we do not
affect any other binary.
config/ac-macros/plugins.m4:
Do not build plugins when building all-static
sql/sql_yacc.yy:
build fix - surplus semicolon
all space column names.
The parser has been modified to check VIEW column names
with the check_column_name function and to report an error
on empty and all space column names (same as for TABLE
column names).
sql/sql_yacc.yy:
Fixed bug #27695.
The parser has been modified to check VIEW column aliases
with the check_column_name function and to report an error
on empty columns and all space columns (same as for TABLE
column names).
mysql-test/t/select.test:
Updated test case for bug #27695.
mysql-test/r/select.result:
Updated test case for bug #27695.
into mysql.com:/home/gluh/MySQL/Merge/5.1-opt
client/client_priv.h:
Auto merged
client/mysqldump.c:
Auto merged
include/config-win.h:
Auto merged
libmysql/libmysql.c:
Auto merged
mysql-test/mysql-test-run.pl:
Auto merged
mysql-test/r/create.result:
Auto merged
mysql-test/r/func_sapdb.result:
Auto merged
mysql-test/r/information_schema.result:
Auto merged
mysql-test/r/variables.result:
Auto merged
mysql-test/t/information_schema.test:
Auto merged
mysql-test/t/variables.test:
Auto merged
sql/field.cc:
Auto merged
sql/ha_partition.cc:
Auto merged
sql/item_func.cc:
Auto merged
sql/item_func.h:
Auto merged
sql/item_sum.cc:
Auto merged
sql/item_timefunc.h:
Auto merged
sql/mysql_priv.h:
Auto merged
sql/protocol.cc:
Auto merged
sql/set_var.cc:
Auto merged
sql/sql_acl.cc:
Auto merged
sql/sql_base.cc:
Auto merged
sql/sql_class.h:
Auto merged
sql/sql_insert.cc:
Auto merged
sql/sql_lex.h:
Auto merged
sql/sql_parse.cc:
Auto merged
sql/sql_select.cc:
Auto merged
sql/sql_yacc.yy:
Auto merged
sql/table.cc:
Auto merged
storage/innobase/handler/ha_innodb.cc:
Auto merged
storage/myisam/sort.c:
Auto merged
tests/mysql_client_test.c:
Auto merged
mysql-test/r/query_cache.result:
manual merge
mysql-test/include/mix1.inc:
manual merge
mysql-test/r/innodb_mysql.result:
manual merge
mysql-test/r/type_datetime.result:
manual merge
mysql-test/r/type_decimal.result:
manual merge
mysql-test/t/query_cache.test:
manual merge
mysql-test/t/type_datetime.test:
manual merge
mysql-test/t/type_decimal.test:
manual merge
sql/item.cc:
manual merge
into mysql.com:/home/gluh/MySQL/Merge/5.0-opt
client/mysqldump.c:
Auto merged
include/config-win.h:
Auto merged
libmysql/libmysql.c:
Auto merged
myisam/sort.c:
Auto merged
mysql-test/r/func_sapdb.result:
Auto merged
mysql-test/r/variables.result:
Auto merged
mysql-test/t/variables.test:
Auto merged
sql/field.cc:
Auto merged
sql/ha_innodb.cc:
Auto merged
sql/item_func.cc:
Auto merged
sql/item_sum.cc:
Auto merged
sql/item_timefunc.h:
Auto merged
sql/mysql_priv.h:
Auto merged
sql/set_var.cc:
Auto merged
sql/sql_acl.cc:
Auto merged
sql/sql_base.cc:
Auto merged
sql/sql_parse.cc:
Auto merged
sql/sql_select.cc:
Auto merged
sql/sql_yacc.yy:
Auto merged
tests/mysql_client_test.c:
Auto merged
mysql-test/r/type_datetime.result:
manual merge
mysql-test/r/type_decimal.result:
manual merge
mysql-test/t/type_datetime.test:
manual merge
mysql-test/t/type_decimal.test:
manual merge
sql/item.cc:
manual merge
into mysql.com:/home/gluh/MySQL/Merge/5.1-opt
mysql-test/r/ctype_utf8.result:
Auto merged
mysql-test/t/ctype_utf8.test:
Auto merged
sql/item.cc:
Auto merged
sql/item.h:
Auto merged
sql/sql_yacc.yy:
Auto merged
The root cause of the issue was that the CREATE FUNCTION grammar,
for User Defined Functions, was using the sp_name rule.
The sp_name rule is intended for fully qualified stored procedure names,
like either ident.ident, or just ident but with a default database
implicitly selected.
A UDF does not have a fully qualified name, only a name (ident), and should
not use the sp_name grammar fragment during parsing.
The fix is to re-organize the CREATE FUNCTION grammar, to better separate:
- creating UDF (no definer, can have AGGREGATE, simple ident)
- creating Stored Functions (definer, no AGGREGATE, fully qualified name)
With the test case provided, another issue was exposed which is also fixed:
the DROP FUNCTION statement was using sp_name and also failing when no database
is implicitly selected, when droping UDF functions.
The fix is also to change the grammar so that DROP FUNCTION works with
both the ident.ident syntax (to drop a stored function), or just the ident
syntax (to drop either a UDF or a Stored Function, in the current database)
mysql-test/r/sp-error.result:
Adjust test results
mysql-test/r/udf.result:
Adjust test results
mysql-test/t/sp-error.test:
Adjust test results
mysql-test/t/udf.test:
Adjust test results
sql/sql_parse.cc:
CREATE UDF FUNCTION does not use a fully qualified name.
sql/sql_yacc.yy:
Fix grammar for CREATE / DROP FUNCTION, FOR udf
Improve error messages for select no_such_function()
issue an error if string has illegal characters
mysql-test/r/ctype_utf8.result:
issue an error if string has illegal characters
mysql-test/t/ctype_utf8.test:
issue an error if string has illegal characters
sql/item.cc:
issue an error if string has illegal characters
sql/item.h:
issue an error if string has illegal characters
sql/sql_yacc.yy:
issue an error if string has illegal characters
"DECLARE CURSOR FOR SHOW ..." is a syntax that currently appears to work,
but is untested for some SHOW commands and does not work for other SHOW
commands.
Since this is an un-intended feature that leaked as a result of a coding bug
(in the parser grammar), the correct fix is to fix the grammar to not accept
this construct.
In other words, "DECLARE CURSOR FOR SHOW <other commands that don't work>"
is not considered a bug, and we will not implement other features to make all
the SHOW commands usable inside a cursor just because someone exploited a bug.
mysql-test/r/sp-error.result:
Only allow declaring cursors for SELECT statements to avoid
possible further confusion/problems.
mysql-test/t/information_schema.test:
Only SELECT statements are allowed in cursors.
mysql-test/t/sp-error.test:
Add test case for Bug#29223. Non-SELECT statements in cursors now
yields a parser error.
sql/sql_yacc.yy:
Rework DECLARE CURSOR statement to not allow non-SELECT statements.
into mysql.com:/home/gluh/MySQL/Merge/5.1-opt
mysql-test/r/ctype_ucs.result:
Auto merged
mysql-test/r/ctype_utf8.result:
Auto merged
mysql-test/t/ctype_ucs.test:
Auto merged
mysql-test/t/ctype_utf8.test:
Auto merged
sql/item.cc:
Auto merged
sql/item.h:
Auto merged
sql/item_strfunc.cc:
Auto merged
sql/item_strfunc.h:
Auto merged
sql/sql_yacc.yy:
manual merge
Bug#30982 CHAR(..USING..) can return a not-well-formed string
Bug#30986 Character set introducer followed by a HEX string can return bad result
check_well_formed_result moved to Item from Item_str_func
fixed Item_func_char::val_str for proper ucs symbols converting
added check for well formed strings for correct conversion of constants with underscore
charset
mysql-test/r/ctype_ucs.result:
test result
mysql-test/r/ctype_utf8.result:
test result
mysql-test/t/ctype_ucs.test:
test case
mysql-test/t/ctype_utf8.test:
test case
sql/item.cc:
check_well_formed_result() moved from Item_str_func
sql/item.h:
check_well_formed_result() moved from Item_str_func
sql/item_strfunc.cc:
check_well_formed_result moved to Item
fixed Item_func_char::val_str for proper ucs symbols converting
sql/item_strfunc.h:
check_well_formed_result moved to Item
sql/sql_yacc.yy:
added check for well formed string
Fixed the usage of spatial data (and Point in specific) with
non-spatial indexes.
Several problems :
- The length of the Point class was not updated to include the
spatial reference system identifier. Fixed by increasing with 4
bytes.
- The storage length of the spatial columns was not accounting for
the length that is prepended to it. Fixed by treating the
spatial data columns as blobs (and thus increasing the storage
length)
- When creating the key image for comparison in index read wrong
key image was created (the one needed for and r-tree search,
not the one for b-tree/other search). Fixed by treating the
spatial data columns as blobs (and creating the correct kind of
image based on the index type).
mysql-test/r/bdb_gis.result:
Bug #30825: bdb tests
mysql-test/r/gis-rtree.result:
Bug #30825: key length changed
mysql-test/r/gis.result:
Bug #30825: MyISAM tests
mysql-test/r/innodb_gis.result:
Bug #30825: InnoDB tests
mysql-test/t/bdb_gis.test:
Bug #30825: bdb tests
mysql-test/t/gis.test:
Bug #30825: MyISAM tests
mysql-test/t/innodb_gis.test:
Bug #30825: InnoDB tests
sql/field.cc:
Bug #30825: Removed Field_geom::get_key_image as Field_blog::get_key_image
takes type parameter into consideration and is a superset of
Field_geom::get_key_image()
sql/field.h:
Bug #30825: Removed Field_geom::get_key_image as Field_blog::get_key_image
takes type parameter into consideration and is a superset of
Field_geom::get_key_image()
sql/sql_select.h:
Bug #30825: Geometry data are a blob derivate
sql/sql_table.cc:
Bug #30825: Increased key length to accomodate for
spatial reference system identifier (srid)
sql/sql_yacc.yy:
Bug #30825: Increased key length to accomodate for
spatial reference system identifier (srid)
sql/table.cc:
Bug #30825: It stores a length for spatial data
as well, so increase the storage length (as it's
done for blobs).
mysql-test/include/gis_keys.inc:
Bug #30825: Test file for spatial data and non-spatial indexes
Bug#29816 Syntactically wrong query fails with misleading error message
The core problem is that an SQL-invoked function name can be a <schema
qualified routine name> that contains no <schema name>, but the mysql
parser insists that all stored procedures (function, procedures and
triggers) must have a <schema name>, which is not true for functions.
This problem is especially visible when trying to create a function
or when a query contains a syntax error after a function call (in the
same query), both will fail with a "No database selected" message if
the session is not attached to a particular schema, but the first
one should succeed and the second fail with a "syntax error" message.
Part of the fix is to revamp the sp name handling so that a schema
name may be omitted for functions -- this means that the internal
function name representation may not have a dot, which represents
that the function doesn't have a schema name. The other part is
to place schema checks after the type (function, trigger or procedure)
of the routine is known.
mysql-test/r/sp-error.result:
Add test case result for Bug#29816
mysql-test/r/udf.result:
Add test case result for Bug#28318
mysql-test/t/sp-error.test:
Add test case for Bug#29816
mysql-test/t/udf.test:
Add test case for Bug#28318
sql/sp.cc:
Copy the (last) nul byte of the stored routine key and move name parsing
code to the sp_name class constructor.
sql/sp_head.cc:
Revamp routine name parsing for when no schema is specified and
omit dot from the qualified name if the routine is not associated
with a scheme name.
sql/sp_head.h:
Name parsing got bigger, uninline by moving to a single unit -- the sp_head.cc
file.
sql/sql_yacc.yy:
Only copy the schema name if one is actually set and check for schema
name presence only where it's necessary.
into bodhi.(none):/opt/local/work/mysql-5.1-runtime
mysql-test/include/mix1.inc:
Auto merged
mysql-test/r/create.result:
Auto merged
mysql-test/r/innodb_mysql.result:
Auto merged
mysql-test/r/sp.result:
Auto merged
mysql-test/t/sp.test:
Auto merged
sql/sql_lex.h:
Auto merged
sql/sql_parse.cc:
Auto merged
sql/sql_select.cc:
Auto merged
sql/sql_yacc.yy:
Auto merged
libmysql/libmysql.c:
Manual merge.
MySQL provides what appears to be a non standard extension to the
FOREIGN KEY syntax which let users name (label/tag) a foreign key
to more easily identify a specific foreign key if any problems show
up later during the query parsing or execution. But the foreign key
name was not being properly set to the right key, possible leaving
the foreign key with no name.
mysql-test/include/mix1.inc:
Add test case for Bug#30747
mysql-test/r/innodb_mysql.result:
Add test case result for Bug#30747
sql/sql_yacc.yy:
Set the foreign key name to the constraint name if a specific name was
not provided. As for the constraint name, only use the foreign name if
a specific name was not provided.
sql/sql_yacc.yy:
Remove useless actions from the grammar.
Empty {} actions in the middle of a rule caused an extra reduce,
which is affecting the parser complexity and performances.
UPGRADE)
Bug 17565 (RENAME DATABASE destroys events)
Bug#28360 (RENAME DATABASE destroys routines)
Removed the
RENAME DATABASE db1 TO db2
statement.
Implemented the
ALTER DATABASE db UPGRADE DATA DIRECTORY NAME
statement, which has the same function.
client/mysqlcheck.c:
ALTER DATABASE db UPGRADE DATA DIRECTORY NAME
mysql-test/r/create.result:
ALTER DATABASE db UPGRADE DATA DIRECTORY NAME
mysql-test/r/query_cache.result:
ALTER DATABASE db UPGRADE DATA DIRECTORY NAME
mysql-test/r/renamedb.result:
ALTER DATABASE db UPGRADE DATA DIRECTORY NAME
mysql-test/r/sp-code.result:
ALTER DATABASE db UPGRADE DATA DIRECTORY NAME
mysql-test/r/sp-error.result:
ALTER DATABASE db UPGRADE DATA DIRECTORY NAME
mysql-test/r/upgrade.result:
ALTER DATABASE db UPGRADE DATA DIRECTORY NAME
mysql-test/t/create.test:
ALTER DATABASE db UPGRADE DATA DIRECTORY NAME
mysql-test/t/query_cache.test:
ALTER DATABASE db UPGRADE DATA DIRECTORY NAME
mysql-test/t/renamedb.test:
ALTER DATABASE db UPGRADE DATA DIRECTORY NAME
mysql-test/t/sp-error.test:
ALTER DATABASE db UPGRADE DATA DIRECTORY NAME
mysql-test/t/upgrade.test:
ALTER DATABASE db UPGRADE DATA DIRECTORY NAME
sql/mysql_priv.h:
ALTER DATABASE db UPGRADE DATA DIRECTORY NAME
sql/sql_lex.h:
ALTER DATABASE db UPGRADE DATA DIRECTORY NAME
sql/sql_parse.cc:
ALTER DATABASE db UPGRADE DATA DIRECTORY NAME
sql/sql_prepare.cc:
ALTER DATABASE db UPGRADE DATA DIRECTORY NAME
sql/sql_yacc.yy:
ALTER DATABASE db UPGRADE DATA DIRECTORY NAME
sql/sql_db.cc:
ALTER DATABASE db UPGRADE DATA DIRECTORY NAME
DELETE FROM ... USING ... statements with the following type of
ambiguous aliasing gave unexpected results:
DELETE FROM t1 AS alias USING t1, t2 AS alias WHERE t1.a = alias.a;
This query would leave table t1 intact but delete rows from t2.
Fixed by changing DELETE FROM ... USING syntax so that only alias
references (as opposed to alias declarations) may be used in FROM.
mysql-test/r/delete.result:
Bug#30234: Test Result
mysql-test/t/delete.test:
Bug#30234: Test Case
sql/sql_yacc.yy:
Bug#30234:
- Added parser rule table_alias_ref_list that contains a list of table
aliases only.
- Added parser rule table_alias_ref that sets the TL_OPTION_ALIAS in
order to turn off semantic checking that applies only for table names.
into weblab.(none):/home/marcsql/TREE/mysql-5.1-rt50-merge
client/mysql.cc:
Auto merged
mysql-test/r/query_cache.result:
Auto merged
mysql-test/t/query_cache.test:
Auto merged
sql/item_cmpfunc.h:
Auto merged
sql/sp.cc:
Auto merged
sql/sp_head.cc:
Auto merged
sql/sql_class.h:
Auto merged
sql/sql_db.cc:
Auto merged
sql/sql_handler.cc:
Auto merged
sql/sql_lex.cc:
Auto merged
sql/sql_lex.h:
Auto merged
sql/sql_yacc.yy:
Auto merged
This is a performance bug, affecting in particular the bison generated code
for the parser.
Prior to this fix, the grammar used a long chain of reduces to parse an
expression, like:
bit_expr -> bit_term
bit_term -> bit_factor
bit_factor -> value_expr
value_expr -> term
term -> factor
etc
This chain of reduces cause the internal state automaton in the generated
parser to execute more state transitions and more reduces, so that the
generated MySQLParse() function would spend a lot of time looping to execute
all the grammar reductions.
With this patch, the grammar has been reorganized so that rules are more
"flat", limiting the depth of reduces needed to parse <expr>.
Tests have been written to enforce that relative priorities and properties
of operators have not changed while changing the grammar.
See the bug report for performance data.
mysql-test/r/parser_precedence.result:
Improved test coverage for operator precedence
mysql-test/t/parser_precedence.test:
Improved test coverage for operator precedence
sql/sql_yacc.yy:
Simplified the grammar to improve performances
Before this patch, the parser would execute:
- Select->expr_list.push_front()
- Select->expr_list.pop()
when parsing expressions lists, in the following rules:
- udf_expr_list
- expr_list
- ident_list
This is unnecessary, and introduces overhead due to the memory allocations
performed with Select->expr_list
With this patch, this code has been removed.
The list being parsed is maintained in the parser stack instead.
Also, 'udf_expr_list' has been renamed 'opt_udf_expr_list', since this
production can be empty.
sql/sql_lex.cc:
Removed unused attribute expr_list
sql/sql_lex.h:
Removed unused attribute expr_list
sql/sql_yacc.yy:
Improved performances when parsing expression lists
This is a performance bug, related to the parsing or 'OR' and 'AND' boolean
expressions.
Let N be the number of expressions involved in a OR (respectively AND).
When N=1
For example, "select 1" involve only 1 term: there is no OR operator.
In 4.0 and 4.1, parsing expressions not involving OR had no overhead.
In 5.0, parsing adds some overhead, with Select->expr_list.
With this patch, the overhead introduced in 5.0 has been removed,
so that performances for N=1 should be identical to the 4.0 performances,
which are optimal (there is no code executed at all)
The overhead in 5.0 was in fact affecting significantly some operations.
For example, loading 1 Million rows into a table with INSERTs,
for a table that has 100 columns, leads to parsing 100 Millions of
expressions, which means that the overhead related to Select->expr_list
is executed 100 Million times ...
Considering that N=1 is by far the most probable expression,
this case should be optimal.
When N=2
For example, "select a OR b" involves 2 terms in the OR operator.
In 4.0 and 4.1, parsing expressions involving 2 terms created 1 Item_cond_or
node, which is the expected result.
In 5.0, parsing these expression also produced 1 node, but with some extra
overhead related to Select->expr_list : creating 1 list in Select->expr_list
and another in Item_cond::list is inefficient.
With this patch, the overhead introduced in 5.0 has been removed
so that performances for N=2 should be identical to the 4.0 performances.
Note that the memory allocation uses the new (thd->mem_root) syntax
directly.
The cost of "is_cond_or" is estimated to be neglectable: the real problem
of the performance degradation comes from unneeded memory allocations.
When N>=3
For example, "select a OR b OR c ...", which involves 3 or more terms.
In 4.0 and 4.1, the parser had no significant cost overhead, but produced
an Item tree which is difficult to evaluate / optimize during runtime.
In 5.0, the parser produces a better Item tree, using the Item_cond
constructor that accepts a list of children directly, but at an extra cost
related to Select->expr_list.
With this patch, the code is implemented to take the best of the two
implementations:
- there is no overhead with Select->expr_list
- the Item tree generated is optimized and flattened.
This is achieved by adding children nodes into the Item tree directly,
with Item_cond::add(), which avoids the need for temporary lists and memory
allocation
Note that this patch also provide an extra optimization, that the previous
code in 5.0 did not provide: expressions are flattened in the Item tree,
based on what the expression already parsed is, and not based on the order
in which rules are reduced.
For example : "(a OR b) OR c", "a OR (b OR c)" would both be represented
with 2 Item_cond_or nodes before this patch, and with 1 node only with this
patch. The logic used is based on the mathematical properties of the OR
operator (it's associative), and produces a simpler tree.
sql/item_cmpfunc.h:
Improved performances for parsing boolean expressions
sql/sql_yacc.yy:
Improved performances for parsing boolean expressions
mysql-test/r/parser_precedence.result:
Added test cases to cover boolean operator precedence
mysql-test/t/parser_precedence.test:
Added test cases to cover boolean operator precedence
