DB2 SQL Confusion

5 pts.
Tags:
DB2
DB2 SQL
SQL
I am failing to understand why the following won't work SELECT m.index, SUM(d1.amt), SUM(d2.amt) FROM master m, detail d1, detail d2 WHERE m.index = d1.index AND m.index = d2.index AND d2.qalif = 1 GROUP BY m.index I wrote another sql that does work, I just don't understand why I get higher values on SUM(d2.amt) than I am expecting.
ASKED: January 9, 2009  4:46 PM
UPDATED: January 9, 2009  9:45 PM

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Thanks. We'll let you know when a new response is added.

To be able to help, I think we would need to know your table structures, and see what results are you getting and what results are you expecting with some example data.

When joining tables, if you do not write the appropriate join conditions, you could be duplicating rows.

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