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# # Test fetching from stats tables while there are no stats # -- source include/have_innodb.inc -- vertical_results CREATE TABLE test_ps_fetch_nonexistent (a INT, PRIMARY KEY (a)) ENGINE=INNODB STATS_PERSISTENT=1; # write stats to mysql.innodb_table_stats ANALYZE TABLE test_ps_fetch_nonexistent; # check that indeed stats were written by ANALYZE above SELECT COUNT(*) FROM mysql.innodb_table_stats WHERE table_name = 'test_ps_fetch_nonexistent'; # delete the stats DELETE FROM mysql.innodb_index_stats WHERE table_name = 'test_ps_fetch_nonexistent'; DELETE FROM mysql.innodb_table_stats WHERE table_name = 'test_ps_fetch_nonexistent'; # reopen the table, this will attept to read the stats FLUSH TABLE test_ps_fetch_nonexistent; # check the stats (should have been generated using the old transient stats # method) SELECT seq_in_index, column_name, cardinality FROM information_schema.statistics WHERE table_name = 'test_ps_fetch_nonexistent' ORDER BY index_name, seq_in_index; SELECT table_rows, avg_row_length, max_data_length, index_length FROM information_schema.tables WHERE table_name = 'test_ps_fetch_nonexistent'; DROP TABLE test_ps_fetch_nonexistent;