SQL查询中的错误＃1064

Question

I have written the following SQL query:

CREATE PROCEDURE query_05_b(OUT rez VARCHAR(200))
BEGIN
    rez := "SELECT numean FROM angajati WHERE idan IN (SELECT idan FROM certificare);";
END

When I try to run it, I get the following error message:

MySQL said: Documentation #1064 - You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near ':= "SELECT numean FROM angajati WHERE idan IN (SELECT idan FROM certificare);"' at line 3

Can you help me understand what is the problem with the query that I have written because I really don't understand where is the mistake.

Thank you!

Answer 1

I believe you are trying to return SQL string, then

You have wrong syntax

rez := "SELECT numean FROM angajati WHERE idan IN (SELECT idan FROM certificare);";

instead

SET rez = "SELECT numean FROM angajati WHERE idan IN (SELECT idan FROM certificare);";