On Saturday, January 9, 2021, Alexander Farber <alexander(dot)farber(at)gmail(dot)com>
wrote:
>
> BEGIN
> FOR _tile IN SELECT * FROM JSONB_ARRAY_ELEMENTS(SELECT tiles FROM
> words_moves WHERE mid = in_mid)
>
>
Subqueries must be enclosed in parentheses. The parentheses that are part
of the function call do not count.
David J.