问题描述
我为d.cargaHr列的返回总和创建了此函数,但是无法创建此函数,并且此错误向我显示
DELIMITER $$
create function cargah_professor(idProfessor int,idCurso int)
returns int
begin
DECLARE sumCH int;
SET sumCH=0;
SELECT c.idCurso,d.nomedisciplina,p.idProfessor,d.cargaHr FROM curso c
join disciplina d
on d.Curso_idCurso = c.idCurso
join turma t
on t.disciplina_iddisciplina = d.iddisciplina
join professor p
on t.Professor_idProfessor = p.idProfessor
where c.idCurso = idCurso and p.idProfessor = idProfessor;
set sumCH = SUM(d.cargaHr);
return sumCH;
end
$$
解决方法
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