mysql一张表往另一张表导数据，其中新表有个字段是固定值，sql语句怎么写？
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mysql一张表往另一张表导数据，其中新表有个字段是固定值，sql语句怎么写？
insert into a select '定值' from b
insert into table_A(需要的字段)
select 需要的字段 from table_B
先导过去再执行update，非要一次搞定吗。思路啊。
1、固定值那2个字段设为默认值
2、先导过去，再update那2个固定值
| 3、mysql> select 5 as b; （嗯，还可以这样子的） |
|---|
| b |
| 5 |
select a, b, c，"固定值" as d into table2 from table1
...ptkm
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