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(Part#2) MDEV-13049 Querying INFORMATION_SCHEMA becomes slow in MariaDB 10.1
This is a 10.3 specific part of MDEV-13049.
It disables automatic sorting for
"SELECT .. FROM INFORMATION_SCHEMA.{SCHEMATA|TABLES}"
and adjusts the affected tests accordingly.
This commit is contained in:
@@ -18,7 +18,8 @@
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CREATE TEMPORARY TABLE table_list (id INT AUTO_INCREMENT, PRIMARY KEY (id)) AS
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SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES
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WHERE TABLE_SCHEMA='performance_schema';
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WHERE TABLE_SCHEMA='performance_schema'
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ORDER BY TABLE_NAME;
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SELECT COUNT(*) FROM table_list INTO @table_count;
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@@ -11,42 +11,52 @@
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select TABLE_SCHEMA, lower(TABLE_NAME), TABLE_CATALOG
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from information_schema.tables
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where TABLE_SCHEMA='performance_schema';
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where TABLE_SCHEMA='performance_schema'
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order by table_name;
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select lower(TABLE_NAME), TABLE_TYPE, ENGINE
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from information_schema.tables
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where TABLE_SCHEMA='performance_schema';
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where TABLE_SCHEMA='performance_schema'
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order by table_name;
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select lower(TABLE_NAME), VERSION, ROW_FORMAT
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from information_schema.tables
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where TABLE_SCHEMA='performance_schema';
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where TABLE_SCHEMA='performance_schema'
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order by table_name;
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select lower(TABLE_NAME), TABLE_ROWS, AVG_ROW_LENGTH
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from information_schema.tables
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where TABLE_SCHEMA='performance_schema';
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where TABLE_SCHEMA='performance_schema'
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order by table_name;
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select lower(TABLE_NAME), DATA_LENGTH, MAX_DATA_LENGTH
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from information_schema.tables
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where TABLE_SCHEMA='performance_schema';
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where TABLE_SCHEMA='performance_schema'
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order by table_name;
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select lower(TABLE_NAME), INDEX_LENGTH, DATA_FREE, AUTO_INCREMENT
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from information_schema.tables
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where TABLE_SCHEMA='performance_schema';
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where TABLE_SCHEMA='performance_schema'
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order by table_name;
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select lower(TABLE_NAME), CREATE_TIME, UPDATE_TIME, CHECK_TIME
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from information_schema.tables
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where TABLE_SCHEMA='performance_schema';
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where TABLE_SCHEMA='performance_schema'
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order by table_name;
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select lower(TABLE_NAME), TABLE_COLLATION, CHECKSUM
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from information_schema.tables
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where TABLE_SCHEMA='performance_schema';
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where TABLE_SCHEMA='performance_schema'
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order by table_name;
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# TABLESPACE_NAME does not exist in 5.4
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# select lower(TABLE_NAME), CREATE_OPTIONS, TABLESPACE_NAME
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# from information_schema.tables
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# where TABLE_SCHEMA='performance_schema';
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# where TABLE_SCHEMA='performance_schema'
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# order by table_name;
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select lower(TABLE_NAME), TABLE_COMMENT
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from information_schema.tables
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where TABLE_SCHEMA='performance_schema';
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where TABLE_SCHEMA='performance_schema'
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order by table_name;
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@@ -35,7 +35,8 @@ begin
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declare pfs_cursor CURSOR FOR
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select table_name from information_schema.tables
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where table_schema= 'performance_schema'
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and table_name like "events_%_by_event_name%";
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and table_name like "events_%_by_event_name%"
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order by table_name;
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declare continue handler for sqlstate '02000'
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set done = 1;
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