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Backport of: ------------------------------------------------------------ revno: 2630.4.1 committer: Dmitry Lenev <dlenev@mysql.com> branch nick: mysql-6.0-3726-w timestamp: Fri 2008-05-23 17:54:03 +0400 message: WL#3726 "DDL locking for all metadata objects". After review fixes in progress. ------------------------------------------------------------ This is the first patch in series. It transforms the metadata locking subsystem to use a dedicated module (mdl.h,cc). No significant changes in the locking protocol. The import passes the test suite with the exception of deprecated/removed 6.0 features, and MERGE tables. The latter are subject to a fix by WL#4144. Unfortunately, the original changeset comments got lost in a merge, thus this import has its own (largely insufficient) comments. This patch fixes Bug#25144 "replication / binlog with view breaks". Warning: this patch introduces an incompatible change: Under LOCK TABLES, it's no longer possible to FLUSH a table that was not locked for WRITE. Under LOCK TABLES, it's no longer possible to DROP a table or VIEW that was not locked for WRITE. ****** Backport of: ------------------------------------------------------------ revno: 2630.4.2 committer: Dmitry Lenev <dlenev@mysql.com> branch nick: mysql-6.0-3726-w timestamp: Sat 2008-05-24 14:03:45 +0400 message: WL#3726 "DDL locking for all metadata objects". After review fixes in progress. ****** Backport of: ------------------------------------------------------------ revno: 2630.4.3 committer: Dmitry Lenev <dlenev@mysql.com> branch nick: mysql-6.0-3726-w timestamp: Sat 2008-05-24 14:08:51 +0400 message: WL#3726 "DDL locking for all metadata objects" Fixed failing Windows builds by adding mdl.cc to the lists of files needed to build server/libmysqld on Windows. ****** Backport of: ------------------------------------------------------------ revno: 2630.4.4 committer: Dmitry Lenev <dlenev@mysql.com> branch nick: mysql-6.0-3726-w timestamp: Sat 2008-05-24 21:57:58 +0400 message: WL#3726 "DDL locking for all metadata objects". Fix for assert failures in kill.test which occured when one tried to kill ALTER TABLE statement on merge table while it was waiting in wait_while_table_is_used() for other connections to close this table. These assert failures stemmed from the fact that cleanup code in this case assumed that temporary table representing new version of table was open with adding to THD::temporary_tables list while code which were opening this temporary table wasn't always fulfilling this. This patch changes code that opens new version of table to always do this linking in. It also streamlines cleanup process for cases when error occurs while we have new version of table open. ****** WL#3726 "DDL locking for all metadata objects" Add libmysqld/mdl.cc to .bzrignore. ****** Backport of: ------------------------------------------------------------ revno: 2630.4.6 committer: Dmitry Lenev <dlenev@mysql.com> branch nick: mysql-6.0-3726-w timestamp: Sun 2008-05-25 00:33:22 +0400 message: WL#3726 "DDL locking for all metadata objects". Addition to the fix of assert failures in kill.test caused by changes for this worklog. Make sure we close the new table only once.
66 lines
2.8 KiB
Text
66 lines
2.8 KiB
Text
drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
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create table t1 (a char, b char, c char)
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partition by range columns(a,b,c)
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( partition p0 values less than ('a','b','c'));
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insert into t1 values ('a', NULL, 'd');
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explain partitions select * from t1 where a = 'a' AND c = 'd';
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id select_type table partitions type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 p0 system NULL NULL NULL NULL 1
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select * from t1 where a = 'a' AND c = 'd';
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a b c
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a NULL d
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drop table t1;
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create table t1 (a int not null) partition by range columns(a) (
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partition p0 values less than (10),
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partition p1 values less than (20),
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partition p2 values less than (30),
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partition p3 values less than (40),
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partition p4 values less than (50),
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partition p5 values less than (60),
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partition p6 values less than (70)
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);
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insert into t1 values (5),(15),(25),(35),(45),(55),(65);
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insert into t1 values (5),(15),(25),(35),(45),(55),(65);
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create table t2 (a int not null) partition by range(a) (
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partition p0 values less than (10),
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partition p1 values less than (20),
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partition p2 values less than (30),
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partition p3 values less than (40),
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partition p4 values less than (50),
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partition p5 values less than (60),
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partition p6 values less than (70)
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);
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insert into t2 values (5),(15),(25),(35),(45),(55),(65);
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insert into t2 values (5),(15),(25),(35),(45),(55),(65);
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explain partitions select * from t1 where a > 35 and a < 45;
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id select_type table partitions type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 p3,p4 ALL NULL NULL NULL NULL 4 Using where
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explain partitions select * from t2 where a > 35 and a < 45;
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id select_type table partitions type possible_keys key key_len ref rows Extra
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1 SIMPLE t2 p3,p4 ALL NULL NULL NULL NULL 4 Using where
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drop table t1, t2;
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create table t1 (a int not null, b int not null )
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partition by range columns(a,b) (
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partition p01 values less than (2,10),
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partition p02 values less than (2,20),
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partition p03 values less than (2,30),
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partition p11 values less than (4,10),
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partition p12 values less than (4,20),
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partition p13 values less than (4,30),
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partition p21 values less than (6,10),
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partition p22 values less than (6,20),
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partition p23 values less than (6,30)
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);
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insert into t1 values (2,5), (2,15), (2,25),
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(4,5), (4,15), (4,25), (6,5), (6,15), (6,25);
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insert into t1 select * from t1;
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explain partitions select * from t1 where a=2;
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id select_type table partitions type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 p01,p02,p03,p11 ALL NULL NULL NULL NULL 8 Using where
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explain partitions select * from t1 where a=4;
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id select_type table partitions type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 p11,p12,p13,p21 ALL NULL NULL NULL NULL 14 Using where
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explain partitions select * from t1 where a=2 and b < 22;
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id select_type table partitions type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 p01,p02,p03 ALL NULL NULL NULL NULL 14 Using where
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drop table t1;
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