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--source include/force_myisam_default.inc
--source include/have_myisam.inc
#
# The test is to run IS.TABLES query using two mode of reading
# dynamic table statistics.
#
# Case 1. Using IS.TABLES query definition that joins with
# mysql.tables.
#
# Case 2. Using IS.TABLES query definition that invokes UDF
# that read stats.
#
# Approach 2) deals with opening the table while query execution for
# non-InnoDB tables. And for InnoDB tables, the UDF's do not do
# complete open_table() and invoke new handlerton API,
# handlerton::get_table_statistics().
#
CREATE TABLE t1 (f0 INT KEY AUTO_INCREMENT, f1 INT, f2 INT);
CREATE TABLE t2 (f0 INT KEY AUTO_INCREMENT, f1 INT, f2 INT) ENGINE=MYISAM;
CREATE TABLE t3 (f0 INT KEY AUTO_INCREMENT, f1 INT, f2 INT, KEY (f0), KEY (f1), KEY (f1, f2));
INSERT INTO t1 (f1, f2) VALUES (1,1 ),(2,2),(3,3),(4,4);
INSERT INTO t1 (f1, f2) SELECT f1, f2 FROM t1;
INSERT INTO t1 (f1, f2) SELECT f1, f2 FROM t1;
INSERT INTO t1 (f1, f2) SELECT f1, f2 FROM t1;
INSERT INTO t2 (f1, f2) SELECT f1, f2 FROM t1;
INSERT INTO t3 (f1, f2) SELECT f1, f2 FROM t1;
DELETE FROM t1 WHERE f1=1;
DELETE FROM t2 WHERE f1=1;
ANALYZE TABLE t1;
ANALYZE TABLE t2;
ANALYZE TABLE t3;
SELECT COUNT(*) FROM t1;
SELECT COUNT(*) FROM t2;
SELECT COUNT(*) FROM t3;
--echo Case 1: IS query uses mysql.table_stats to read dynamic table statistics
SET SESSION information_schema_stats_expiry=default;
--replace_column 9 #
SELECT table_rows, avg_row_length, data_length, max_data_length, index_length,
data_free, auto_increment, checksum, update_time, check_time
FROM information_schema.tables WHERE table_name in ('t1', 't2');
SELECT * FROM information_schema.statistics WHERE table_name='t3'
ORDER BY index_name, seq_in_index;
--echo Case 2: IS query uses UDF's to read dynamic table statistics
SET SESSION information_schema_stats_expiry=0;
--replace_column 9 #
SELECT table_rows, avg_row_length, data_length, max_data_length, index_length,
data_free, auto_increment, checksum, update_time, check_time
FROM information_schema.tables WHERE table_name in ('t1', 't2');
SELECT * FROM information_schema.statistics WHERE table_name='t3'
ORDER BY index_name, seq_in_index;
SET SESSION information_schema_stats_expiry=default;
DROP TABLE t1;
DROP TABLE t2;
DROP TABLE t3;
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