名称

大纲

DISCONNECT connection_name
DISCONNECT [ CURRENT ]
DISCONNECT DEFAULT
DISCONNECT ALL

描述

DISCONNECT关闭一个（或者所有）到数据库的连接。

参数

例子

int
main(void)
{
    EXEC SQL CONNECT TO testdb AS DEFAULT USER testuser;
    EXEC SQL CONNECT TO testdb AS con1 USER testuser;
    EXEC SQL CONNECT TO testdb AS con2 USER testuser;
    EXEC SQL CONNECT TO testdb AS con3 USER testuser;

    EXEC SQL DISCONNECT CURRENT;  /* 关闭 con3          */
    EXEC SQL DISCONNECT DEFAULT;  /* 关闭 DEFAULT       */
    EXEC SQL DISCONNECT ALL;      /* 关闭 con2 以及 con1 */

    return 0;
}

兼容性

SQL 标准中说明了DISCONNECT。

参见