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SQL Join Query question

Hi,

I have the below query that works on one column, then creates a table from the result that gets.

I need a query that checks 3 columns then creates the table from the result.

I need to check for any change for the columns [ps].ASE, [ps].Env, [ps].City

Thank you,
RD11

SELECT [ps].ETag, [ps].Host, [ps].[Private Input], [ps].[From ci db], [ps].[ID-PK], [ps].Src, [ps].ASE, [ps].Env, [ps].EnvD, [ps].Cls [ps].City, [ps].[Surpluss EST], [ps].[Monthly Cost], [ps].Description, [ps].[Install Date], [ps].[Purchase Date], [ps].Env, [ps].Pool, [ps].Billed, [ps].Price, [ps].[C Org], [ps].[Resp], [ps].Function,[ps].Comments, [ps].[Last Update], [ps].OS, [ps].Status INTO Diff_table
FROM [ps] LEFT JOIN cI_table ON [ps].Host = cI_table.HOST
WHERE (((cI_table.HOST) Is Null));

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Ephraim Wangoya

Checks the three columns exactly for what?

If they are different in the diff table, you can use exists

SELECT [ps].ETag, [ps].Host, [ps].[Private Input], [ps].[From ci db], [ps].[ID-PK], [ps].Src, [ps].ASE, [ps].Env, [ps].EnvD, [ps].Cls [ps].City, [ps].[Surpluss EST], [ps].[Monthly Cost], [ps].Description, [ps].[Install Date], [ps].[Purchase Date], [ps].Env, [ps].Pool, [ps].Billed, [ps].Price, [ps].[C Org], [ps].[Resp], [ps].Function,[ps].Comments, [ps].[Last Update], [ps].OS, [ps].Status 
INTO Diff_table
FROM [ps] 
LEFT JOIN cI_table ON [ps].Host = cI_table.HOST
where not exists (select 1 from Diff_table B
                  where [ps].ASE = B.ASE and [ps].Env = B.Env and [ps].City = B.City)
and (((cI_table.HOST) Is Null));

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RD11

ASKER

If any change in either any one of them.

Ephraim Wangoya

This line will get the rows that are not in the diff table based on the three columns

where not exists (select 1 from Diff_table B where [ps].ASE = B.ASE and [ps].Env = B.Env and [ps].City = B.City)

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Ephraim Wangoya

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RD11

ASKER

I actually DO NOT have a primary Key, I am using the Host name as a PK. Can I still do that?

Ephraim Wangoya

That should work

RD11

ASKER

Thank you