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Bobba Buoy
Starting Member
36 Posts |
 Posted - 2003-07-25 : 11:36:31
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| I want to populate an asp select dropdown with all the people (by unique id) in a roster table that don't appear in a forms table. The two tables are joined by a relationship. Should I use a join, and if so, what is the syntax for the ON clause? For instance: "SELECT * FROM Roster r INNER JOIN Forms f ON ??? WHERE r.TeamID = 10" Or would it be easier to throw them all in the select and then take out the duplicates (I don't know how to 'remove item' in asp)?Thanks!! |
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mohdowais
Sheikh of Yak Knowledge
1456 Posts |
Posted - 2003-07-25 : 11:45:33
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| Definitely something for SQL server to do!You are looking at something with NOT IN, NOT EXISTS or (LEFT) OUTER JOIN. Example:SELECT * FROM Roster WHERE TeamID = 10 AND PersonID NOT IN(SELECT PersonID FROM Forms--WHERE TeamID = 10 perhaps?)SELECT r.* FROM Roster rLEFT JOIN Forms fON r.TeamID = f.TeamIDAND r.TeamID = 10WHERE f.PersonID IS NULLOwais |
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Selecting Entries from a JOIN