从 2 个不同的数据库中选择 2 个表 (ACCESS)
这是我所拥有的连接
strCon="DBQ=" & Server.Mappath("db.mdb") & ";Driver={Microsoft Access Driver (*.mdb)};PWD=password;"
set adoCon=server.createobject("adodb.connection")
adoCon.Open strCon
,为了使用 2 个数据库,我有 2 个 adoCon,当我进行选择时,我从我
现在需要解决问题的每个数据库中进行选择... 在这种情况下,我只能从一个人那里获取所有信息,然后再从另一个人那里获取所有信息。但我想要的是能够将它们组合在一起。
db1.tblcats 有类别,db2.tblcats 有类别和子类别 因此,除了能够同时选择两者之外,我还需要能够知道什么猫来自哪个数据库,
这
是我的代码,这是我的代码,
strSQL = "SELECT name FROM tblcats union " _
& "select name from [MS Access;PWD=pass;DATABASE=" & Server.Mappath("../shop.mdb") & "].tblcats as bcats where bcats.father=50"
rs.CursorType = 3
rs.LockType = 3
rs.Open strSQL, strCon
while not rs.eof
response.write rs("name")&"<br>"
rs.movenext
wend
我如何知道什么记录来自哪个数据库?因为我需要对每个人采取不同的行动
here is the connection i have
strCon="DBQ=" & Server.Mappath("db.mdb") & ";Driver={Microsoft Access Driver (*.mdb)};PWD=password;"
set adoCon=server.createobject("adodb.connection")
adoCon.Open strCon
so in order to work with the 2 databases i have 2 adoCon and when i do the select i select from each db i need
now for the problem...
in this situation i will be able only to get all the info from one and then from the other one. but what i want is to be able to put the together.
db1.tblcats has categories and db2.tblcats has categories and subcategories
so in addition to be able to select both of the together, i need to be able to know what cat is from what db
Step 2 after the big help
this is my code
strSQL = "SELECT name FROM tblcats union " _
& "select name from [MS Access;PWD=pass;DATABASE=" & Server.Mappath("../shop.mdb") & "].tblcats as bcats where bcats.father=50"
rs.CursorType = 3
rs.LockType = 3
rs.Open strSQL, strCon
while not rs.eof
response.write rs("name")&"<br>"
rs.movenext
wend
how can i know what record came from what db? cause i need to act difrently for each one
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您可以使用 IN:
EDIT:
EDIT 2:
您可以使用别名来标识字段来自哪个数据库:
EDIT 3
或者您可以添加虚拟字段:
UNION ALL 通常更快。
You can use IN:
EDIT:
EDIT 2:
You can use the aliases to identify which database a field is from:
EDIT 3
Or you can add a virtual field:
UNION ALL is usually faster.