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delpi767
Starting Member
11 Posts |
 Posted - 2009-09-10 : 17:16:30
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| I have a table "residents" which has a field lot number and a field email.I also have a table "address" that has uniq lot numbers that relate to the "residents" table.Some of the homes (lots) will have more than one email address but I want to send only one email to each address so I need to return each distinct lot number and the first email address associated with that lot number.Do I just need to return all residents and loop through the recordset or can SQL do this?Regards,-dmd- |
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robvolk
Most Valuable Yak
15732 Posts |
Posted - 2009-09-10 : 17:20:14
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| SELECT LotNumber, min(EmailAddress) Email FROM Residents GROUP BY LotNumberThere's no concept of "first" in a relational database, so the Min() or Max() function would be used for email address. |
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visakh16
Very Important crosS Applying yaK Herder
52326 Posts |
Posted - 2009-09-13 : 13:03:11
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| by first did you mean first in alphabetical manner? if not, you need to specify how you determine order. |
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Selecting one record from duplicates