1

我确信这可以通过加入来完成,但在加入方面我并不那么无知:

假设我有 3 张桌子。表一是分支机构,表二是县,表三是州

表一:

branchid - Unique record id
siteCode - Unique identifier for the branch
address1 - Street address #1
address2 - Street address #2
cityName - City Name
county_ID - record ID from county table
state_ID - record ID from state table

表二:

countyid - Unique record ID
countyName - County Name

表三

stateid - Unique record ID
stateShortName - State name two letter abbreviation
stateLongName - Full state name

使用对分支的普通查询,我得到了一个记录,其中包含州和县表中关联记录的编号。

我想做一个查询,从表一中的记录返回信息,并将记录 id 替换为正确的县名和州名

那有意义吗?

例子:

正常查询返回:

branchid - 1
siteCode - CA001
address1 - 123 Main Street
address2 - Suite #201
cityName - San Diego
county_ID - 234
state_ID - 2

正确查询:

branchid - 1
siteCode - CA001
address1 - 123 Main Street
address2 - Suite #201
cityName - San Diego
county_ID - Sand Diego County
state_ID - CA
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1 回答 1

2

看看这个,这是你想要执行的吗?

SELECT B.branchid,
B.siteCode, 
B.address1 , 
B.address2 , 
B.cityName ,
C.countyName ,
S.stateShortName 
From branches B
INNER JOIN counties  c ON B.county_ID = C.county_ID
INNER JOIN states s ON B.state_ID  = S.state_ID 
于 2013-09-23T03:30:24.090 回答