1SET @start_global_value = @@global.max_user_connections; 2SELECT @start_global_value; 3@start_global_value 40 5SET @start_session_value = @@session.max_user_connections; 6SELECT @start_session_value; 7@start_session_value 80 9'#--------------------FN_DYNVARS_087_01-------------------------#' 10SET @@global.max_user_connections = 1000; 11SET @@global.max_user_connections = DEFAULT; 12SELECT @@global.max_user_connections; 13@@global.max_user_connections 140 15SET @@session.max_user_connections = 1000; 16ERROR HY000: SESSION variable 'max_user_connections' is read-only. Use SET GLOBAL to assign the value 17'#--------------------FN_DYNVARS_087_02-------------------------#' 18SET @@global.max_user_connections = DEFAULT; 19SELECT @@global.max_user_connections = 0; 20@@global.max_user_connections = 0 211 22SET @@session.max_user_connections = DEFAULT; 23ERROR HY000: SESSION variable 'max_user_connections' is read-only. Use SET GLOBAL to assign the value 24SELECT @@session.max_user_connections; 25@@session.max_user_connections 260 27'#--------------------FN_DYNVARS_087_03-------------------------#' 28SET @@global.max_user_connections = 1; 29SELECT @@global.max_user_connections; 30@@global.max_user_connections 311 32SET @@global.max_user_connections = 2; 33SELECT @@global.max_user_connections; 34@@global.max_user_connections 352 36SET @@global.max_user_connections = 65536; 37SELECT @@global.max_user_connections; 38@@global.max_user_connections 3965536 40SET @@global.max_user_connections = 4294967295; 41SELECT @@global.max_user_connections; 42@@global.max_user_connections 434294967295 44SET @@global.max_user_connections = 4294967294; 45SELECT @@global.max_user_connections; 46@@global.max_user_connections 474294967294 48'#------------------FN_DYNVARS_087_05-----------------------#' 49SET @@global.max_user_connections = -1024; 50Warnings: 51Warning 1292 Truncated incorrect max_user_connections value: '-1024' 52SELECT @@global.max_user_connections; 53@@global.max_user_connections 540 55SET @@global.max_user_connections = 4294967296; 56Warnings: 57Warning 1292 Truncated incorrect max_user_connections value: '4294967296' 58SELECT @@global.max_user_connections; 59@@global.max_user_connections 604294967295 61SET @@global.max_user_connections = -1; 62Warnings: 63Warning 1292 Truncated incorrect max_user_connections value: '-1' 64SELECT @@global.max_user_connections; 65@@global.max_user_connections 660 67SET @@global.max_user_connections = 429496729500; 68Warnings: 69Warning 1292 Truncated incorrect max_user_connections value: '429496729500' 70SELECT @@global.max_user_connections; 71@@global.max_user_connections 724294967295 73SET @@global.max_user_connections = 65530.34; 74ERROR 42000: Incorrect argument type to variable 'max_user_connections' 75SELECT @@global.max_user_connections; 76@@global.max_user_connections 774294967295 78SET @@global.max_user_connections = test; 79ERROR 42000: Incorrect argument type to variable 'max_user_connections' 80SELECT @@global.max_user_connections; 81@@global.max_user_connections 824294967295 83SET @@global.max_user_connections = ' '; 84ERROR 42000: Incorrect argument type to variable 'max_user_connections' 85SELECT @@global.max_user_connections; 86@@global.max_user_connections 874294967295 88'#------------------FN_DYNVARS_087_06-----------------------#' 89SELECT @@global.max_user_connections = VARIABLE_VALUE 90FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES 91WHERE VARIABLE_NAME='max_user_connections'; 92@@global.max_user_connections = VARIABLE_VALUE 931 94'#------------------FN_DYNVARS_087_08-----------------------#' 95SET @@global.max_user_connections = TRUE; 96SELECT @@global.max_user_connections; 97@@global.max_user_connections 981 99SET @@global.max_user_connections = FALSE; 100SELECT @@global.max_user_connections; 101@@global.max_user_connections 1020 103'#---------------------FN_DYNVARS_087_09----------------------#' 104SET @@global.max_user_connections = 20; 105SELECT @@max_user_connections = @@global.max_user_connections; 106@@max_user_connections = @@global.max_user_connections 1071 108'#---------------------FN_DYNVARS_087_11----------------------#' 109SET @@global.max_user_connections = 102; 110SELECT @@max_user_connections; 111@@max_user_connections 112102 113SELECT local.max_user_connections; 114ERROR 42S02: Unknown table 'local' in field list 115SELECT session.max_user_connections; 116ERROR 42S02: Unknown table 'session' in field list 117SELECT max_user_connections = @@session.max_user_connections; 118ERROR 42S22: Unknown column 'max_user_connections' in 'field list' 119SET @@global.max_user_connections = @start_global_value; 120SELECT @@global.max_user_connections; 121@@global.max_user_connections 1220 123