INSERT INTO table_B(UserID,Age)
SELECT RE.UserID,RE.Age FROM table_A AS RE
WHERE NOT EXISTS(SELECT * FROM table_B(NOLOCK) AS REUO WHERE REUO.UserID=RE.UserID)
--查找集合
SELECT table_A
UNION ALL
SELECT table_B
INSERT INTO table_B(UserID,Age)
SELECT RE.UserID,RE.Age FROM table_A AS RE
WHERE NOT EXISTS(SELECT * FROM table_B(NOLOCK) AS REUO WHERE REUO.UserID=RE.UserID)
--查找集合
SELECT table_A
UNION ALL
SELECT table_B