This built-in global variable specifies the SQL compatibility mode. Its value determines which set of syntax rules are applied to SQL queries. This global variable has the following characteristics: It is a read
SELECT@@DATEFIRST--返回使用SET DATEFIRST命令而被赋值的DATAFIRST参数值。SET DATEFIRST命令用来指定每周的第一天是星期几。 SELECT@@IDLE--返回自SQL Server最近一次启动以来CPU处于空闭状态的时间长短,单位为毫秒。 SELECT@@IO_BUSY--返回自SQL Server最后一次启动以来CPU执行输入输出操作所花费的时间(毫秒)。 SELECT...
The procedure utilizes at least one variable, which has a plurality of attributes. The method and system include defining the at least one variable as at least one global variable prior to calling of the procedure. Defining the global variable(s) includes informing the database system of the ...
Variable_name Value activate_all_roles_on_login OFF auto_generate_certs ON auto_increment_increment 1 auto_increment_offset 1 autocommit ON automatic_sp_privileges ON avoid_temporal_upgrade OFF back_log 80 basedir C:\Program Files\MySQL\MySQL Server 8.0\ big_tables OFF bind_address * binlog_ca...
| Variable_name | Value | +---+---+ | log_output | NONE | +---+---+ 1 rowinset(0.01 sec) root@localhost (none)>setgloballog_output=table; ERROR 1064 (42000): You have an errorinyour SQL syntax;checkthe manual that correspondstoyour MySQL server versionfortherightsyntaxtouse nea...
SQL 型 V4.3.0 参考指南 系统视图 Oracle 租户系统视图 字典视图 TENANT_VIRTUAL_GLOBAL_VARIABLE 更新时间:2024-11-20 16:06:47 功能 展示全局变量信息。 功能适用性 该视图仅适用于 OceanBase 数据库 Oracle 模式。 字段说明 字段名称类型是否可以为 NULL描述 ...
Built-in global variables are provided with the database manager and are used in SQL statements to retrieve scalar values associated with the variables. As an example, the ROUTINE_TYPE global variable can be referenced in an SQL statement to retrieve the current routine type. The authorization ID...
3. | Variable_name | Value | 4. +---+---+ 5. | log_slow_queries | OFF | 6. | slow_launch_time | 2 | 7. +---+---+ 8. mysql> show global status like '%slow%'; 9. +---+---+ 10. | Variable_name | Value | 11....
global环境变量则是确定了下一个新建立的session的变量值。使用show variables可以查看session值,如果要查看global的环境变量,则用show golbal variables语句。设置session环境变量用set variablename=value,设置global环境变量用set global variablename=value。 环境变量可以在服务启动后用set来设置,有些(主要是和数据库...
A ref or out argument must be an assignable variable A route named ' ' could not be found in the route collection. Parameter name: name A socket operation encountered a dead network A TCP error (10013: An attempt was made to access a socket in a way forbidden by its access permissi...