相当于 mySQL 中的 SQLServer 函数 SCOPE_IDENTITY()?

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时间:2020-08-31 12:48:06  来源:igfitidea点击:

The equivalent of SQLServer function SCOPE_IDENTITY() in mySQL?

mysqlsql-server

提问by kristof

What is the equivalent of SQLServer function SCOPE_IDENTITY()in mySQL?

mySQL中 SQLServer 函数SCOPE_IDENTITY()的等价物是什么?

回答by Sean Bright

Thisis what you are looking for:

就是你要找的:

LAST_INSERT_ID()

In response to the OP's comment, I created the following bench test:

针对 OP 的评论,我创建了以下基准测试:

CREATE TABLE Foo
(
    FooId INT AUTO_INCREMENT PRIMARY KEY
);

CREATE TABLE Bar
(
    BarId INT AUTO_INCREMENT PRIMARY KEY
);

INSERT INTO Bar () VALUES ();
INSERT INTO Bar () VALUES ();
INSERT INTO Bar () VALUES ();
INSERT INTO Bar () VALUES ();
INSERT INTO Bar () VALUES ();

CREATE TRIGGER FooTrigger AFTER INSERT ON Foo
    FOR EACH ROW BEGIN
        INSERT INTO Bar () VALUES ();
    END;

INSERT INTO Foo () VALUES (); SELECT LAST_INSERT_ID();

This returns:

这将返回:

+------------------+
| LAST_INSERT_ID() |
+------------------+
|                1 |
+------------------+

So it uses the LAST_INSERT_ID()of the original table and not the table INSERTed into inside the trigger.

所以它使用LAST_INSERT_ID()原始表的 ,而不是INSERT触发器内部的表。

Edit:I realized after all this time that the result of the SELECT LAST_INSERT_ID()shown in my answer was wrong, although the conclusion at the end was correct. I've updated the result to be the correct value.

编辑:经过这么长时间,我意识到SELECT LAST_INSERT_ID()我的答案中显示的结果是错误的,尽管最后的结论是正确的。我已将结果更新为正确的值。

回答by Ramgy Borja

open MySqlcommand type SELECT LAST_INSERT_ID();then ENTER

打开MySql命令类型SELECT LAST_INSERT_ID();然后输入