Re: infinite loop in an update statement

[Tom Lane]

Fabrice Chapuis <fabrice636...@gmail.com> writes:
> why this update does not return instantly?

> UPDATE table_a a
>  SET col1 = (SELECT MIN(b.col1)
>                     FROM table_b b
>                     WHERE b.col2 = a.col2)

Maybe query is waiting for a lock on one of those tables?

                        regards, tom lane