编号, 实施_机关编号, 教研室编号
INSERT INTO 实施_机关_教研室 (
编号, 实施_机关编号, 教研室编号
)
SELECT
#{relation.bH}, #{relation.sSJGBH}, #{relation.jYSBH}
FROM DUAL
WHERE NOT EXISTS (
SELECT 1
FROM 实施_机关_教研室
WHERE 教研室编号 = #{relation.jYSBH}
)
DELETE FROM 实施_机关_教研室
WHERE 编号 = #{id}