SELECT @@global.innodb_cmp_per_index_enabled;
@@global.innodb_cmp_per_index_enabled
0
SET GLOBAL innodb_stats_persistent=123;
ERROR 42000: Variable 'innodb_stats_persistent' can't be set to the value of '123'
SET GLOBAL innodb_stats_persistent='foo';
ERROR 42000: Variable 'innodb_stats_persistent' can't be set to the value of 'foo'
SET GLOBAL innodb_cmp_per_index_enabled=ON;
SELECT @@global.innodb_cmp_per_index_enabled;
@@global.innodb_cmp_per_index_enabled
1
SET GLOBAL innodb_cmp_per_index_enabled=ON;
SELECT @@global.innodb_cmp_per_index_enabled;
@@global.innodb_cmp_per_index_enabled
1
SET GLOBAL innodb_cmp_per_index_enabled=OFF;
SELECT @@global.innodb_cmp_per_index_enabled;
@@global.innodb_cmp_per_index_enabled
0
SET GLOBAL innodb_cmp_per_index_enabled=OFF;
SELECT @@global.innodb_cmp_per_index_enabled;
@@global.innodb_cmp_per_index_enabled
0
SET GLOBAL innodb_file_format=Barracuda;
SET GLOBAL innodb_cmp_per_index_enabled=ON;
CREATE TABLE t (a INT) ENGINE=INNODB KEY_BLOCK_SIZE=8;
INSERT INTO t VALUES (1);
SELECT * FROM information_schema.innodb_cmp_per_index;
database_name	test
table_name	t
index_name	GEN_CLUST_INDEX
compress_ops	1
compress_ops_ok	1
compress_time	0
uncompress_ops	0
uncompress_time	0
SET GLOBAL innodb_cmp_per_index_enabled=OFF;
SET GLOBAL innodb_cmp_per_index_enabled=ON;
SELECT * FROM information_schema.innodb_cmp_per_index;
DROP TABLE t;
SET GLOBAL innodb_cmp_per_index_enabled=ON;
CREATE TABLE t (a INT) ENGINE=INNODB KEY_BLOCK_SIZE=8;
INSERT INTO t VALUES (1);
SELECT * FROM information_schema.innodb_cmp_per_index;
database_name	test
table_name	t
index_name	GEN_CLUST_INDEX
compress_ops	1
compress_ops_ok	1
compress_time	0
uncompress_ops	0
uncompress_time	0
SET GLOBAL innodb_cmp_per_index_enabled=ON;
SELECT * FROM information_schema.innodb_cmp_per_index;
database_name	test
table_name	t
index_name	GEN_CLUST_INDEX
compress_ops	1
compress_ops_ok	1
compress_time	0
uncompress_ops	0
uncompress_time	0
DROP TABLE t;
SET GLOBAL innodb_file_format=default;
SET GLOBAL innodb_cmp_per_index_enabled=default;