多行插入和返回ID

Question

Disclaimer: I'm working with old code that uses mysql functions instead of mysqli functions. I am not in a position to retrofit the code with the updated functionality and have to work within the old, depredated functions. I am aware this is not best practice.

We are trying to use a multiline INSERT but then need to pull out the mysql_insert_id() for each inserted row. Is this possible?

Example:

INSERT INTO banner (date, count) VALUES ('2013-06-06', 1), ('2013-06-07', 1), ('2013-06-08', 2);

How can I then grab the insert_id for each line?

Answer 1

I would use a transaction and loop through your data:

--- DB SET AUTOCOMMIT TO FALSE ---

--- DB START TRANSACTION ---

--- LOOP BEGIN ---

    --- INSERT ONE ROW ---

    --- YOU CAN FETCH LAST_INSERT_ID HERE AND USE/STORE IT ---

--- LOOP END ---

--- DB END TRANSACTION (COMMIT) ---

--- DB SET AUTOCOMMIT BACK TO TRUE ---

(pseudocode)

Answer 2

Perhaps you could take a different approach to this problem.

Since you'll only get the ID of the last inserted row, you can easily get all the IDs based on the number of rows that are inserted (provided that you use AUTO_INCREMENT, which seems so from your code, and that you know how many rows are inserted each time). You can easily subtrack the number of added items from the last ID and you'll get the range of IDs you need.

The range would be from Last ID - rows added + 1 to Last ID .

So for example, if you insert 5 rows and you get the ID of 42, the list of IDs would be: 38, 39, 40, 41, 42.