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03.10.2008 at 10:04AM PDT, ID: 23229078
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9.4

Full Outer Joins

Asked by tim_cs in SQL Server 2005, MS SQL Server, SQL Query Syntax

Tags: ,

I have several tables that I'm trying to query from and I need all of the results in one query.  The results I want would look like this

Date, AreaName, Table1.Count, Table2.Count, Table3.Count

Whenever I output the data I will be using Date and AreaName to output it.  My prolem is all of the tables could have data or only one of them could end up having data.  How would I create this query to get these result using full outer joins?  Would I do something like what's in the Attached code?  How else could I create this query?Start Free Trial 
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select 
      CASE WHEN A.Count IS NULL THEN CASE WHEN B.Count IS NULL THEN C.Date END ELSE B.Date END ELSE A.Date END AS Date, 
      CASE WHEN A.Count IS NULL THEN CASE WHEN B.Count IS NULL THEN C.AreaName END ELSE B.AreaName END ELSE A.AreaName END AS AreaName,
      A.Count, B.Count, C.Count
FROM    table1 A FULL OUTER JOIN 
        table2 B ON A.Date = B.Date AND A.AreaName = B.AreaName FULL OUTER JOIN 
        table3 C ON A.Date = C.Date and A.AreaName = C.AreaName
[+][-]03.10.2008 at 10:11AM PDT, ID: 21088212

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[+][-]03.10.2008 at 10:27AM PDT, ID: 21088357

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About this solution

Zones: SQL Server 2005, MS SQL Server, SQL Query Syntax
Tags: SQL 2005, SQL 2005, IE 7
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Solution Provided By: ee_rlee
Participating Experts: 2
Solution Grade: A
 
 
[+][-]03.11.2008 at 08:18AM PDT, ID: 21096531

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[+][-]03.11.2008 at 08:51AM PDT, ID: 21096928

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[+][-]03.11.2008 at 09:57AM PDT, ID: 21097635

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