我该如何更改语法？

Question

SELECT Category, Seat;
FROM License
WHERE Category IS NOT NULL;
SELECT Category, Seat;
BEGIN
IF Category LIKE "Software- Multiple Use"
Seat <=25
END
ELSE
Seat <=1
END

它表示此表达式中子查询的语法不正确。有人帮助我无法解决这个问题