MySQL UPDATE and SELECT in one pass

try like this

UPDATE `lastid` SET `idnum` =  (SELECT `id` FROM `history` ORDER BY `id` DESC LIMIT 1);

above code worked for me

You may create a procedure that does it:

CREATE PROCEDURE prc_get_task (in_guid BINARY(16), OUT out_params VARCHAR(200))
BEGIN

  DECLARE task_id INT;

  SELECT id, out_params
  INTO task_id, out_params
  FROM tasks
  WHERE guid = 0
  LIMIT 1
  FOR UPDATE;

  UPDATE task
  SET guid = in_guid
  WHERE id = task_id;

END;

BEGIN TRANSACTION;

CALL prc_get_task(@guid, @params);

COMMIT;

If you are looking for a single query then it can't happen. The UPDATE function specifically returns just the number of items that were updated. Similarly, the SELECT function doesn't alter a table, only return values.

Using a procedure will indeed turn it into a single function and it can be handy if locking is a concern for you. If your biggest concern is network traffic (ie: passing too many queries) then use the procedure. If you concern is server overload (ie: the DB is working too hard) then the extra overhead of a procedure could make things worse.

I have the exact same issue. We ended up using PostreSQL instead, and UPDATE ... RETURNING:

The optional RETURNING clause causes UPDATE to compute and return value(s) based on each row actually updated. Any expression using the table's columns, and/or columns of other tables mentioned in FROM, can be computed. The new (post-update) values of the table's columns are used. The syntax of the RETURNING list is identical to that of the output list of SELECT.

Example: UPDATE 'my_table' SET 'status' = 1 WHERE 'status' = 0 LIMIT 1 RETURNING *;

Or, in your case: UPDATE 'tasks' SET 'guid' = %d WHERE 'guid' = 0 LIMIT 1 RETURNING 'params';

Sorry, I know this doesn't answer the question with MySQL, and it might not be easy to just switch to PostgreSQL, but it's the best way we've found to do it. Even 6 years later, MySQL still doesn't support UPDATE ... RETURNING. It might be added at some point in the future, but for now MariaDB only has it for DELETE statements.

Edit: There is a task (low priority) to add UPDATE ... RETURNING support to MariaDB.

MySQL UPDATE and SELECT in one pass

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