mysql troubles with left joins

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mysql troubles with left joins

01-15-2006, 02:44 PM

Paul M

Join Date: Sep 2004

Location: Nottingham, UK

Posts: 23,748

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Code:

SELECT * from table1 
LEFT JOIN table2 ON (table1.column1 = table2.column2)
WHERE table2.column2 = NULL

Should find any entries in table1 that don't have a matching entry in table2 (column1 & column2 are the same data you referred to with different names in each table).

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