MYSQL 生成UUID 即 guid 函数
-- 带 - 的UUID
select UUID()

-- 去掉 - 的UUID
select replace(uuid(),'-','')

一个表的数据插入另一个表中。

INSERT INTO 目标表 SELECT * FROM 来源表;

INSERT INTO目标表 (字段1, 字段2, ...)SELECT字段1, 字段2, ...FROM来源表 ;

--案例
INSERT INTO ProcessStepSetUser(Id,
TenantId,
StepSetId,
UserId,
ApprovalType,
Creator,
CreateTime,
Reviser,
ReviseTime,
Status
) SELECT UUID(),
TenantId,
StepSetId,
'fedce4c0d09e40cb9ec7d7975b058493',
ApprovalType,
Creator,
CreateTime,
Reviser,
ReviseTime,
Status from ProcessStepSetUser where UserId='69c1c44e08604d45b7fbc759c7daece2' and `Status`=0;

--去掉ID   -
update ProcessStepSetUser SET Id =(select REPLACE(Id,'-','')) where UserId='fedce4c0d09e40cb9ec7d7975b058493' and `Status`=0;