SELECT
Id,
ColumnId,
Title,
Summary,
IFNULL(StudyId,0) as IsStudy
FROM
study study
MySQL查询,某个值为空时赋予默认值
最新推荐文章于 2024-07-30 03:43:36 发布
SELECT
Id,
ColumnId,
Title,
Summary,
IFNULL(StudyId,0) as IsStudy
FROM
study study