REPLACE

从语义上看,REPLACE 语句是 DELETE 语句和 INSERT 语句的结合,可用于简化应用程序代码。

语法图

ReplaceIntoStmt:

ReplaceIntoStmt

PriorityOpt:

PriorityOpt

IntoOpt:

IntoOpt

TableName:

TableName

InsertValues:

InsertValues

示例

mysql> CREATE TABLE t1 (id INT NOT NULL PRIMARY KEY AUTO_INCREMENT, c1 INT NOT NULL); Query OK, 0 rows affected (0.12 sec) mysql> INSERT INTO t1 (c1) VALUES (1), (2), (3); Query OK, 3 rows affected (0.02 sec) Records: 3 Duplicates: 0 Warnings: 0 mysql> SELECT * FROM t1; +----+----+ | id | c1 | +----+----+ | 1 | 1 | | 2 | 2 | | 3 | 3 | +----+----+ 3 rows in set (0.00 sec) mysql> REPLACE INTO t1 (id, c1) VALUES(3, 99); Query OK, 2 rows affected (0.01 sec) mysql> SELECT * FROM t1; +----+----+ | id | c1 | +----+----+ | 1 | 1 | | 2 | 2 | | 3 | 99 | +----+----+ 3 rows in set (0.00 sec)

MySQL 兼容性

REPLACE 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

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