insert into 和select 結合使用

1.語法

insert into 新建表名 （新建表的字段）

select 欄位1，欄位2，欄位3 ······

2.例子

insert

into
newtb (district,districtid,town,townid,village,villageid)
select
infotb.district,infotb.districtid,infotb.town,infotb.townid,infotb.village,dictionary.villageid
from
infotb,dictionary
where infotb.village like dictionary.village and infotb.town like dictionary.town and infotb.districtid like dictionary.districtid;

3.select的特殊用法

select 1 from 表名 

查詢結果為表內資料個1

select 後邊還可以直接跟字串或數字，查詢結果的的對應欄位處都是該數字或者字串。

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