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BUG#5390 - problems with merge tables

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After-fix optimizations proposed and finally
implemented by Monty.


mysql-test/r/lock.result:
  BUG#5390 - problems with merge tables
  After-fix optimizations proposed and finally
  implemented by Monty.
  Additional test results.
mysql-test/t/lock.test:
  BUG#5390 - problems with merge tables
  After-fix optimizations proposed and finally
  implemented by Monty.
  Additional tests.
sql/lock.cc:
  BUG#5390 - problems with merge tables
  After-fix optimizations proposed and finally
  implemented by Monty.
  get_lock_data() gets a flag for storing the lock
  positions in the new TABLE elements.
  mysql_lock_remove() can now remove a lock faster
  and more precisely as it has needed info in TABLE now.
  mysql_unlock_read_tables() and mysql_lock_merge() must 
  now adjust the new elements of TABLE when modifying locks.
  mysql_lock_have_duplicate() can now work faster on
  the existing lock as the positions in the lock
  arrays are known for each table.
  get_lock_data() assigns the new TABLE elements 
  on request of the new flag.
sql/table.h:
  BUG#5390 - problems with merge tables
  After-fix optimizations proposed and finally
  implemented by Monty.
  Additional elements of TABLE.
This commit is contained in:
unknown
2006-01-23 19:12:29 +01:00
parent 2845da017e
commit 15ecf9228a
4 changed files with 198 additions and 71 deletions
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11
mysql-test/r/lock.result
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@ -47,3 +47,14 @@ unlock tables;
lock tables t1 write, t1 as t1_alias read;
insert into t1 select index1,nr from t1 as t1_alias;
drop table t1,t2;
create table t1 (c1 int);
create table t2 (c1 int);
create table t3 (c1 int);
lock tables t1 write, t2 write, t3 write;
drop table t2, t3, t1;
create table t1 (c1 int);
create table t2 (c1 int);
create table t3 (c1 int);
lock tables t1 write, t2 write, t3 write, t1 as t4 read;
alter table t2 add column c2 int;
drop table t1, t2, t3;