sqllite 判断 某个id是否存在于表中了，如果存在则不插入，不存

判断某个id是否存在于表中了，如果存在则不插入，不存在则插入 无 INSERT INTO USER (email,ADDTIME) (SELECT 'email','addTime' FROM USER u2 JOIN( SELECT COUNT(*) num FROM USER u1 WHERE u1.id = 87) u3 ON u3.num 1 LIMIT 1)

判断 某个id是否存在于表中了，如果存在则不插入，不存在则插入

INSERT INTO USER (email,ADDTIME) (SELECT 'email','addTime' FROM USER u2  JOIN( SELECT COUNT(*) num FROM USER u1 WHERE u1.id = 87) u3 ON u3.num < 1  LIMIT 1)