The equivalent of SQLServer function SCOPE_IDENTITY() in mySQL?

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This is what you are looking for:

LAST_INSERT_ID()

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

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:

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

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

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.

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