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# # Test the persistent stats auto recalc during DDL # -- source include/have_innodb.inc -- vertical_results -- let $check_stats1 = SELECT n_rows FROM mysql.innodb_table_stats WHERE table_name = 'arddl' ORDER BY 1 -- let $check_stats2 = SELECT index_name, stat_name, stat_value FROM mysql.innodb_index_stats WHERE table_name = 'arddl' AND index_name = 'PRIMARY' ORDER BY 1, 2, 3 # Test ADD INDEX during background stats gathering CREATE TABLE arddl (a INT, b INT, PRIMARY KEY (a)) ENGINE=INNODB; INSERT INTO arddl VALUES (1, 10); INSERT INTO arddl VALUES (2, 10); ALTER TABLE arddl ADD INDEX (b); # wait for the bg stats thread to update the stats, notice we wait on # innodb_index_stats because innodb_table_stats gets updated first and # it is possible that (if we wait on innodb_table_stats) the wait cond # gets satisfied before innodb_index_stats is updated let $wait_condition = SELECT stat_value = 2 FROM mysql.innodb_index_stats WHERE table_name = 'arddl' AND index_name = 'PRIMARY' AND stat_name = 'n_diff_pfx01'; -- source include/wait_condition.inc # the second INSERT from above should have triggered an auto-recalc -- eval $check_stats1 -- eval $check_stats2 DROP TABLE arddl; # Test DROP INDEX during background stats gathering CREATE TABLE arddl (a INT, b INT, PRIMARY KEY (a), KEY (b)) ENGINE=INNODB; INSERT INTO arddl VALUES (3, 10); INSERT INTO arddl VALUES (4, 10); ALTER TABLE arddl DROP INDEX b; let $wait_condition = SELECT stat_value = 2 FROM mysql.innodb_index_stats WHERE table_name = 'arddl' AND index_name = 'PRIMARY' AND stat_name = 'n_diff_pfx01'; -- source include/wait_condition.inc -- eval $check_stats1 -- eval $check_stats2 DROP TABLE arddl;