SET @start_value = @@global.general_log;
SELECT @start_value;
@start_value 1 '#---------------------FN_DYNVARS_004_01-------------------------#' SET @@global.general_log = DEFAULT;
SELECT @@global.general_log = 0;
@@global.general_log = 0 1 '#--------------------FN_DYNVARS_004_02------------------------#' SET @@global.general_log = ON;
SELECT @@global.general_log;
@@global.general_log 1 SET @@global.general_log = OFF;
SELECT @@global.general_log;
@@global.general_log 0 '#--------------------FN_DYNVARS_004_03-------------------------#' SET @@global.general_log = 2; ERROR42000: Variable 'general_log' can't be set to the value of '2' SET @@global.general_log = -1; ERROR42000: Variable 'general_log' can't be set to the value of '-1' SET @@global.general_log = TRUEF; ERROR42000: Variable 'general_log' can't be set to the value of 'TRUEF' SET @@global.general_log = TRUE_F; ERROR42000: Variable 'general_log' can't be set to the value of 'TRUE_F' SET @@global.general_log = FALSE0; ERROR42000: Variable 'general_log' can't be set to the value of 'FALSE0' SET @@global.general_log = OON; ERROR42000: Variable 'general_log' can't be set to the value of 'OON' SET @@global.general_log = ONN; ERROR42000: Variable 'general_log' can't be set to the value of 'ONN' SET @@global.general_log = OOFF; ERROR42000: Variable 'general_log' can't be set to the value of 'OOFF' SET @@global.general_log = 0FF; ERROR42000: Variable 'general_log' can't be set to the value of '0FF' SET @@global.general_log = ' '; ERROR42000: Variable 'general_log' can't be set to the value of '' SET @@global.general_log = " "; ERROR42000: Variable 'general_log' can't be set to the value of '' SET @@global.general_log = ''; ERROR42000: Variable 'general_log' can't be set to the value of '' '#-------------------FN_DYNVARS_004_04----------------------------#' SET @@session.general_log = OFF; ERROR HY000: Variable 'general_log' is a GLOBAL variable and should be set with SET GLOBAL
SELECT @@session.general_log; ERROR HY000: Variable 'general_log' is a GLOBAL variable '#----------------------FN_DYNVARS_004_05------------------------#'
SELECT IF(@@global.general_log, "ON", "OFF") = VARIABLE_VALUE
FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES
WHERE VARIABLE_NAME='general_log'; IF(@@global.general_log, "ON", "OFF") = VARIABLE_VALUE 1 '#---------------------FN_DYNVARS_004_06----------------------#' SET @@global.general_log = 0;
SELECT @@global.general_log;
@@global.general_log 0 SET @@global.general_log = 1;
SELECT @@global.general_log;
@@global.general_log 1 '#---------------------FN_DYNVARS_004_07----------------------#' SET @@global.general_log = TRUE;
SELECT @@global.general_log;
@@global.general_log 1 SET @@global.general_log = FALSE;
SELECT @@global.general_log;
@@global.general_log 0 '#---------------------FN_DYNVARS_004_08----------------------#' SET @@global.general_log = ON;
SELECT @@general_log = @@global.general_log;
@@general_log = @@global.general_log 1 '#---------------------FN_DYNVARS_004_09----------------------#' SET general_log = ON; ERROR HY000: Variable 'general_log' is a GLOBAL variable and should be set with SET GLOBAL
SELECT local.general_log; ERROR42S02: Unknown table 'local' in SELECT
SELECT global.general_log; ERROR42S02: Unknown table 'global' in SELECT
SELECT general_log = @@session.general_log; ERROR42S22: Unknown column 'general_log' in 'SELECT' SET @@global.general_log = @start_value;
SELECT @@global.general_log;
@@global.general_log 1
Messung V0.5 in Prozent
¤ Dauer der Verarbeitung: 0.8 Sekunden
(vorverarbeitet am 2026-10-10)
¤
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