PREPARE

+2
y
J
C
q

PREPARE 语句为服务器端预处理语句提供 SQL 接口。

语法图

PreparedStmt
PREPAREIdentifierFROMPrepareSQL
PrepareSQL
stringLitUserVariable

示例

PREPARE mystmt FROM 'SELECT ? as num FROM DUAL';
Query OK, 0 rows affected (0.00 sec)
SET @number = 5;
Query OK, 0 rows affected (0.00 sec)
EXECUTE mystmt USING @number;
+------+ | num | +------+ | 5 | +------+ 1 row in set (0.00 sec)
DEALLOCATE PREPARE mystmt;
Query OK, 0 rows affected (0.00 sec)

MySQL 兼容性

PREPARE 语句与 MySQL 完全兼容。如发现任何兼容性差异,请在 GitHub 上提交 issue

另请参阅

PREPARE更新于 2/11/2022, 2:59:40 AM: Remove aliases from v5.4 (#8334)

文档内容是否有帮助?