mirror of
https://github.com/MariaDB/server.git
synced 2025-06-09 03:41:38 +03:00
5775df0127
The data type of the column INFORMATION_SCHEMA.GLOBAL_STATUS.VARIABLE_VALUE is a character string. Therefore, if we want to compare some values as integers, we must explicitly cast them to integer type, to avoid an awkward comparison where '10'<'9' because the first digit is smaller.
27 lines
1.1 KiB
Plaintext
27 lines
1.1 KiB
Plaintext
SELECT CAST(variable_value AS INT) INTO @old_encrypted
|
|
FROM information_schema.global_status
|
|
WHERE variable_name = 'innodb_encryption_n_temp_blocks_encrypted';
|
|
SELECT CAST(variable_value AS INT) INTO @old_decrypted
|
|
FROM information_schema.global_status
|
|
WHERE variable_name = 'innodb_encryption_n_temp_blocks_decrypted';
|
|
CREATE TEMPORARY TABLE t1(f1 CHAR(200), f2 CHAR(200)) ENGINE=InnoDB;
|
|
INSERT INTO t1 (f1,f2) SELECT '', '' FROM seq_1_to_8192;
|
|
CREATE TEMPORARY TABLE t2(f1 CHAR(100), f2 CHAR(200), f3 CHAR(200))ENGINE=InnoDB;
|
|
INSERT INTO t2 (f1,f2,f3) SELECT '', '', '' FROM seq_1_to_8192;
|
|
SELECT COUNT(*) FROM t1;
|
|
COUNT(*)
|
|
8192
|
|
SELECT COUNT(*) FROM t2;
|
|
COUNT(*)
|
|
8192
|
|
SELECT CAST(variable_value AS INT) > @old_encrypted
|
|
FROM information_schema.global_status
|
|
WHERE variable_name = 'innodb_encryption_n_temp_blocks_encrypted';
|
|
CAST(variable_value AS INT) > @old_encrypted
|
|
1
|
|
SELECT CAST(variable_value AS INT) > @old_decrypted
|
|
FROM information_schema.global_status
|
|
WHERE variable_name = 'innodb_encryption_n_temp_blocks_decrypted';
|
|
CAST(variable_value AS INT) > @old_decrypted
|
|
1
|