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LEFT JOIN produces more rows than in original
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De
04/12/2006 09:03:50
 
 
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Forum:
Microsoft SQL Server
Catégorie:
Syntaxe SQL
Titre:
LEFT JOIN produces more rows than in original
Versions des environnements
SQL Server:
SQL Server 2005
Divers
Thread ID:
01174573
Message ID:
01174573
Vues:
56
Hi,

I'm running a query like this:
SELECT [DateArrive]
      ,[StLucia_National].[dbo].[Carriers].[car_pk]
      ,[Flight_No]
      ,[BirthDate]
  FROM [StLuciaOld].[dbo].[EdCard]
	left outer join [StLucia_National].[dbo].[Carriers] on [Carrier] = [StLucia_National].[dbo].[Carriers].[car_code]
This returns 1,631,147 rows.

However, the Properties of [StLuciaOld].[dbo].[EdCard] says there are 1,630,724 records.

Can anyone please explain to me why the difference? I was expecting that my query should return as many rows as there are in the [StLuciaOld].[dbo].[EdCard] table.

Thanks,
Frank.

Frank Cazabon
Samaan Systems Ltd.
www.samaansystems.com
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