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Re: Use of DISTINCT in INNER JOIN
Posted by: Steve Croall
Date: March 27, 2009 05:20AM

So, you are saying that when using DISTINCT I must have an index that includes all the columns I wish to return? The original query being used has about 15 columns in the table that need to be returned.

The JOIN statement could potentially bring back duplicate rows hence the need for DISTINCT.

If this is by design in MySQL, then fair enough, we will use an alternative query. I just wanted to check that this wasn't a bug, since this type of query doesn't show the same issue in Oracle or MSSQL.

Cheers, Steve.

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Use of DISTINCT in INNER JOIN
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Steve Croall
March 24, 2009 12:07PM
Re: Use of DISTINCT in INNER JOIN
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Steve Croall
March 24, 2009 02:00PM
Re: Use of DISTINCT in INNER JOIN
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Rick James
March 25, 2009 07:01PM
Re: Use of DISTINCT in INNER JOIN
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Steve Croall
March 27, 2009 05:20AM
Re: Use of DISTINCT in INNER JOIN
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Rick James
March 27, 2009 10:01AM
Re: Use of DISTINCT in INNER JOIN
6878
Steve Croall
March 28, 2009 02:02AM
Re: Use of DISTINCT in INNER JOIN
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Rick James
March 28, 2009 03:53PM
Re: Use of DISTINCT in INNER JOIN
5956
Steve Croall
April 01, 2009 03:36AM
Re: Use of DISTINCT in INNER JOIN
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Rick James
April 02, 2009 12:16AM
Re: Use of DISTINCT in INNER JOIN
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Steve Croall
April 02, 2009 06:29AM


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