troubleshooting Question

I need assistance using UNION in my SQL Query

Avatar of mainrotor
mainrotor asked on
Microsoft SQL ServerMicrosoft SQL Server 2008SQL
4 Comments1 Solution3531 ViewsLast Modified:
Hi Experts,
I am writing a query using UNION to join two tables in SQL Server 2012.  One table has 37,550 records, and the other table has 940,400 records, for a combined total of 977,950.  When I run my query using UNION, the result set only returns 885,067.  Why am I getting less records?

my query syntax:
SELECT [Column 0] AS SSN, [Column 1] AS fee,
[Column 2] AS DATE, 
[Column 4] AS OrderNo
FROM TABLE1
UNION
SELECT [Column 3] AS SSN, [Column 4] AS fee,
[Column 0] AS DATE, 
[Column 2] AS OrderNo
FROM TABLE2
ORDER BY OrderNo

Thanks in advance for your help,
mrotor..
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