Edit File: table_name.test
# # Performance Schema # # Verify that the Performance Schema correctly identifies normal and temporary # tables with non-standard names. # The server uses the table name prefix "#sql" for temporary and intermediate # tables, however user-defined tables having the "#sql" prefix are also permitted. # Independent of the table name, temporary or intermediate tables always have the # "#sql" prefix in the filename. (For non-temporary tables starting with "#", # the "#" is encoded to @0023 in the filename.) # # Given the ambiguity with temporary table names, the Performance Schema identifies # temporary tables tables either by the table category or by the filename. # --source include/have_perfschema.inc --source include/not_embedded.inc --echo --echo # --echo # TEST 1: Normal tables prefixed with "#sql" and "sql". --echo # USE test; CREATE TABLE `#sql_1` (a int, b text); # INSERT forces path through get_table_share() INSERT INTO `#sql_1` VALUES(1,'one'); --echo CREATE TABLE `sql_1` (a int, b text); INSERT INTO `sql_1` VALUES(1,'one'); --echo --echo # Verify that the tables are treated as normal tables . --echo SELECT object_type, object_schema, object_name FROM performance_schema.objects_summary_global_by_type WHERE object_schema="test"; --echo --echo # Drop the tables, verify that the table objects are removed. --echo DROP TABLE `#sql_1`; DROP TABLE `sql_1`; --echo SELECT object_type, object_schema, object_name FROM performance_schema.objects_summary_global_by_type WHERE object_schema="test"; --echo --echo # --echo # TEST 2: Temporary tables, no special prefix. --echo # CREATE TEMPORARY TABLE sql_temp2_myisam (a int, b text) ENGINE=MYISAM; INSERT INTO sql_temp2_myisam VALUES(1,'one'); --echo CREATE TEMPORARY TABLE sql_temp2_innodb (a int, b text) ENGINE=INNODB; INSERT INTO sql_temp2_innodb VALUES(1,'one'); --echo --echo # Confirm that the temporary tables are ignored. --echo SELECT object_type, object_schema, object_name FROM performance_schema.objects_summary_global_by_type WHERE object_schema="test"; --echo --echo # Drop the tables, verify that the table objects are not created. --echo DROP TABLE sql_temp2_myisam; DROP TABLE sql_temp2_innodb; --echo SELECT object_type, object_schema, object_name FROM performance_schema.objects_summary_global_by_type WHERE object_schema="test"; --echo --echo # --echo # TEST 3: Temporary tables with the "#sql" prefix. --echo # CREATE TEMPORARY TABLE `#sql_temp3_myisam` (a int, b text) ENGINE=MYISAM; CHECK TABLE `#sql_temp3_myisam`; INSERT INTO `#sql_temp3_myisam` VALUES(1,'one'); --echo CREATE TEMPORARY TABLE `#sql_temp3_innodb` (a int, b text) ENGINE=INNODB; CHECK TABLE `#sql_temp3_innodb`; INSERT INTO `#sql_temp3_innodb` VALUES(1,'one'); --echo --echo # Confirm that the temporary tables are ignored. --echo SELECT object_type, object_schema, object_name FROM performance_schema.objects_summary_global_by_type WHERE object_schema="test"; --echo --echo # Drop the temporary tables. --echo DROP TABLE `#sql_temp3_myisam`; DROP TABLE `#sql_temp3_innodb`; --echo --echo # Confirm that the temporary tables are still ignored. --echo SELECT object_type, object_schema, object_name FROM performance_schema.objects_summary_global_by_type WHERE object_schema="test"; --echo --echo # --echo # TEST 4: Special case: MyISAM temporary tables are recreated as non-temporary --echo # when they are truncated. --echo # CREATE TEMPORARY TABLE `sql_temp4_myisam` (a int, b text) ENGINE=MYISAM; INSERT INTO `sql_temp4_myisam` VALUES(1,'one'); --echo CREATE TEMPORARY TABLE `#sql_temp4_myisam` (a int, b text) ENGINE=MYISAM; INSERT INTO `#sql_temp4_myisam` VALUES(1,'one'); --echo --echo # Confirm that the MyISAM temporary tables are ignored. --echo SELECT object_type, object_schema, object_name FROM performance_schema.objects_summary_global_by_type WHERE object_schema="test"; --echo --echo # Truncate the MyISAM temporary tables, forcing them to be recreated as non-temporary. --echo TRUNCATE TABLE `sql_temp4_myisam`; TRUNCATE TABLE `#sql_temp4_myisam`; --echo --echo # Confirm that the recreated MyISAM tables are still regarded as temporary and ignored. --echo SELECT object_type, object_schema, object_name FROM performance_schema.objects_summary_global_by_type WHERE object_schema="test"; --echo --echo # Drop the recreated MyISAM tables; --echo DROP TABLE `sql_temp4_myisam`; DROP TABLE `#sql_temp4_myisam`; --echo --echo # Confirm that the recreated temporary tables are still ignored. --echo SELECT object_type, object_schema, object_name FROM performance_schema.objects_summary_global_by_type WHERE object_schema="test"; --echo --echo # --echo # TEST 5: Generate temporary tables with ALTER MyISAM table. --echo # USE test; CREATE TABLE t1 (a int) ENGINE=MYISAM; INSERT INTO t1 VALUES (1), (2), (3); # Force a path throug mysql_alter_table() and ha_create_table(). ALTER TABLE t1 ADD COLUMN (b int); --echo --echo # Confirm that the recreated temporary tables are still ignored. --echo SELECT object_type, object_schema, object_name FROM performance_schema.objects_summary_global_by_type WHERE object_schema="test"; --echo --echo # Drop the MyISAM table --echo DROP TABLE t1; --echo --echo # Confirm that no tables remain; --echo SELECT object_type, object_schema, object_name FROM performance_schema.objects_summary_global_by_type WHERE object_schema="test";