Question

UPDATE myTable SET niceColumn=1 WHERE someVal=1;

SELECT * FROM myTable WHERE someVal=1;

Is there a way to combine these two queries into one? I mean can I run an update query and it shows the rows it updates. Because here I use “where id=1” filtering twice, I don’t want this. Also I think if someVal changes before select query I will have troubles about what I get (ex: update updates it and after that someVal becomes 0 because of other script).

Answer 1

Wrap the two queries in a transaction with the desired ISOLATION LEVEL so that no other threads can’t affect the locked rows between the update and the select.