SET @start_value = @@global.key_cache_block_size;
SELECT @start_value;
@start_value
1024
'#--------------------FN_DYNVARS_057_01------------------------#'
SET @@global.key_cache_block_size = DEFAULT;
SELECT @@global.key_cache_block_size;
@@global.key_cache_block_size
1024
'#---------------------FN_DYNVARS_057_02-------------------------#'
SET @@global.key_cache_block_size = @start_value;
SELECT @@global.key_cache_block_size = 1024;
@@global.key_cache_block_size = 1024
1
'#--------------------FN_DYNVARS_057_03------------------------#'
SET @@global.key_cache_block_size = 1024;
SELECT @@global.key_cache_block_size;
@@global.key_cache_block_size
1024
SET @@global.key_cache_block_size = 16384;
SELECT @@global.key_cache_block_size;
@@global.key_cache_block_size
16384
SET @@global.key_cache_block_size = 1800;
Warnings:
Warning	1292	Truncated incorrect key_cache_block_size value: '1800'
SELECT @@global.key_cache_block_size;
@@global.key_cache_block_size
1536
SET @@global.key_cache_block_size = 16383;
Warnings:
Warning	1292	Truncated incorrect key_cache_block_size value: '16383'
SELECT @@global.key_cache_block_size;
@@global.key_cache_block_size
15872
'#--------------------FN_DYNVARS_057_04-------------------------#'
SET @@global.key_cache_block_size = -1;
Warnings:
Warning	1292	Truncated incorrect key_cache_block_size value: '-1'
SELECT @@global.key_cache_block_size;
@@global.key_cache_block_size
512
SET @@global.key_cache_block_size = 42949672951;
Warnings:
Warning	1292	Truncated incorrect key_cache_block_size value: '42949672951'
SELECT @@global.key_cache_block_size;
@@global.key_cache_block_size
16384
SET @@global.key_cache_block_size = 10000.01;
ERROR 42000: Incorrect argument type to variable 'key_cache_block_size'
SELECT @@global.key_cache_block_size;
@@global.key_cache_block_size
16384
SET @@global.key_cache_block_size = -1024;
Warnings:
Warning	1292	Truncated incorrect key_cache_block_size value: '-1024'
SELECT @@global.key_cache_block_size;
@@global.key_cache_block_size
512
SET @@global.key_cache_block_size = 256;
Warnings:
Warning	1292	Truncated incorrect key_cache_block_size value: '256'
SELECT @@global.key_cache_block_size;
@@global.key_cache_block_size
512
SET @@global.key_cache_block_size = 511;
Warnings:
Warning	1292	Truncated incorrect key_cache_block_size value: '511'
SELECT @@global.key_cache_block_size;
@@global.key_cache_block_size
512
SET @@global.key_cache_block_size = 16385;
Warnings:
Warning	1292	Truncated incorrect key_cache_block_size value: '16385'
SELECT @@global.key_cache_block_size;
@@global.key_cache_block_size
16384
SET @@global.key_cache_block_size = ON;
ERROR 42000: Incorrect argument type to variable 'key_cache_block_size'
SELECT @@global.key_cache_block_size;
@@global.key_cache_block_size
16384
SET @@global.key_cache_block_size = 'test';
ERROR 42000: Incorrect argument type to variable 'key_cache_block_size'
SELECT @@global.key_cache_block_size;
@@global.key_cache_block_size
16384
'#-------------------FN_DYNVARS_057_05----------------------------#'
SET @@session.key_cache_block_size = 0;
ERROR HY000: Variable 'key_cache_block_size' is a GLOBAL variable and should be set with SET GLOBAL
SELECT @@session.key_cache_block_size;
ERROR HY000: Variable 'key_cache_block_size' is a GLOBAL variable
'#----------------------FN_DYNVARS_057_06------------------------#'
SELECT @@global.key_cache_block_size = VARIABLE_VALUE 
FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES 
WHERE VARIABLE_NAME='key_cache_block_size';
@@global.key_cache_block_size = VARIABLE_VALUE
1
SELECT @@key_cache_block_size = VARIABLE_VALUE 
FROM INFORMATION_SCHEMA.SESSION_VARIABLES 
WHERE VARIABLE_NAME='key_cache_block_size';
@@key_cache_block_size = VARIABLE_VALUE
1
'#---------------------FN_DYNVARS_057_07----------------------#'
SET @@global.key_cache_block_size = TRUE;
Warnings:
Warning	1292	Truncated incorrect key_cache_block_size value: '1'
SELECT @@global.key_cache_block_size;
@@global.key_cache_block_size
512
SET @@global.key_cache_block_size = FALSE;
Warnings:
Warning	1292	Truncated incorrect key_cache_block_size value: '0'
SELECT @@global.key_cache_block_size;
@@global.key_cache_block_size
512
'#---------------------FN_DYNVARS_057_08----------------------#'
SET @@global.key_cache_block_size = 1024;
SELECT @@key_cache_block_size = @@global.key_cache_block_size;
@@key_cache_block_size = @@global.key_cache_block_size
1
'#---------------------FN_DYNVARS_057_09----------------------#'
SET key_cache_block_size = 8000;
ERROR HY000: Variable 'key_cache_block_size' is a GLOBAL variable and should be set with SET GLOBAL
SELECT @@key_cache_block_size;
@@key_cache_block_size
1024
SELECT local.key_cache_block_size;
ERROR 42S02: Unknown table 'local' in field list
SELECT global.key_cache_block_size;
ERROR 42S02: Unknown table 'global' in field list
SELECT key_cache_block_size = @@session.key_cache_block_size;
ERROR 42S22: Unknown column 'key_cache_block_size' in 'field list'
SET @@global.key_cache_block_size = @start_value;
SELECT @@global.key_cache_block_size;
@@global.key_cache_block_size
1024