SET @start_value = @@global.max_connections; SELECT @start_value; @start_value 151 '#--------------------FN_DYNVARS_074_01------------------------#' SET @@global.max_connections = 5000; SET @@global.max_connections = DEFAULT; SELECT @@global.max_connections; @@global.max_connections 151 'Bug# 34876: This variable has invalid default value as compared to documentation'; '#---------------------FN_DYNVARS_074_02-------------------------#' SET @@global.max_connections = @start_value; SELECT @@global.max_connections = 151; @@global.max_connections = 151 1 '#--------------------FN_DYNVARS_074_03------------------------#' SET @@global.max_connections = 100000; SELECT @@global.max_connections; @@global.max_connections 100000 SET @@global.max_connections = 99999; SELECT @@global.max_connections; @@global.max_connections 99999 SET @@global.max_connections = 65536; SELECT @@global.max_connections; @@global.max_connections 65536 SET @@global.max_connections = 1; SELECT @@global.max_connections; @@global.max_connections 1 SET @@global.max_connections = 2; SELECT @@global.max_connections; @@global.max_connections 2 'Bug# 34877: Invalid Values are coming in variable on assigning valid values'; '#--------------------FN_DYNVARS_074_04-------------------------#' SET @@global.max_connections = -1; Warnings: Warning 1292 Truncated incorrect max_connections value: '-1' SELECT @@global.max_connections; @@global.max_connections 1 SET @@global.max_connections = 100000000000; Warnings: Warning 1292 Truncated incorrect max_connections value: '100000000000' SELECT @@global.max_connections; @@global.max_connections 100000 SET @@global.max_connections = 10000.01; ERROR 42000: Incorrect argument type to variable 'max_connections' SELECT @@global.max_connections; @@global.max_connections 100000 SET @@global.max_connections = -1024; Warnings: Warning 1292 Truncated incorrect max_connections value: '-1024' SELECT @@global.max_connections; @@global.max_connections 1 SET @@global.max_connections = 0; Warnings: Warning 1292 Truncated incorrect max_connections value: '0' SELECT @@global.max_connections; @@global.max_connections 1 SET @@global.max_connections = 100001; Warnings: Warning 1292 Truncated incorrect max_connections value: '100001' SELECT @@global.max_connections; @@global.max_connections 100000 'Bug # 34837: Errors are not coming on assigning invalid values to variable'; SET @@global.max_connections = ON; ERROR 42000: Incorrect argument type to variable 'max_connections' SELECT @@global.max_connections; @@global.max_connections 100000 SET @@global.max_connections = 'test'; ERROR 42000: Incorrect argument type to variable 'max_connections' SELECT @@global.max_connections; @@global.max_connections 100000 '#-------------------FN_DYNVARS_074_05----------------------------#' SET @@session.max_connections = 4096; ERROR HY000: Variable 'max_connections' is a GLOBAL variable and should be set with SET GLOBAL SELECT @@session.max_connections; ERROR HY000: Variable 'max_connections' is a GLOBAL variable '#----------------------FN_DYNVARS_074_06------------------------#' SELECT @@global.max_connections = VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='max_connections'; @@global.max_connections = VARIABLE_VALUE 1 SELECT @@max_connections = VARIABLE_VALUE FROM INFORMATION_SCHEMA.SESSION_VARIABLES WHERE VARIABLE_NAME='max_connections'; @@max_connections = VARIABLE_VALUE 1 '#---------------------FN_DYNVARS_074_07----------------------#' SET @@global.max_connections = TRUE; SELECT @@global.max_connections; @@global.max_connections 1 SET @@global.max_connections = FALSE; Warnings: Warning 1292 Truncated incorrect max_connections value: '0' SELECT @@global.max_connections; @@global.max_connections 1 '#---------------------FN_DYNVARS_074_08----------------------#' SET @@global.max_connections = 5000; SELECT @@max_connections = @@global.max_connections; @@max_connections = @@global.max_connections 1 '#---------------------FN_DYNVARS_074_09----------------------#' SET max_connections = 6000; ERROR HY000: Variable 'max_connections' is a GLOBAL variable and should be set with SET GLOBAL SELECT @@max_connections; @@max_connections 5000 SET local.max_connections = 7000; ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'max_connections = 7000' at line 1 SELECT local.max_connections; ERROR 42S02: Unknown table 'local' in field list SET global.max_connections = 8000; ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'max_connections = 8000' at line 1 SELECT global.max_connections; ERROR 42S02: Unknown table 'global' in field list SELECT max_connections = @@session.max_connections; ERROR 42S22: Unknown column 'max_connections' in 'field list' SET @@global.max_connections = @start_value; SELECT @@global.max_connections; @@global.max_connections 151