SQL语句生产32位UUID:
SELECT REPLACE(UUID(),'-','') AS id;
临时表的使用:
-- 删除临时表
DROP TABLE IF EXISTS cu_user_temp;
-- 创建临时表
CREATE TABLE cu_user_temp LIKE cu_user;
-- 赋值临时表
INSERT INTO cu_user_temp SELECT * FROM cu_user;
-- 插入数据
INSERT INTO cu_user_channel_log (id, userId)
SELECT
cu_user_temp.id,
cu_user_temp.ringUserName
FROM
cu_user_temp
LEFT JOIN cu_user ON cu_user_temp.id = cu_user.id;
-- 删除临时表
DROP TABLE IF EXISTS cu_user_temp;