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Hello, Can any of you help me with this query?, I need to retrieve the sum(units) and sum(cost) for each client in every month in the same row, something like this: client|UnJan|CostJan|UnFeb|CostFeb|UnMar|CostMar ... |UnDec|CostDec - -------------------------------------------------------------------- 100058|580 |47384 |746 |87438 |536 |21653 ... |857 |754875 (wrong data, just to show) Now I get this result using several querys (one for month and worse for client too) but this, of course its too expensive. Here is a table sample. orderId | client | date | product | Un | cost - ------------------------------------------------------ 1001299 | 100058 | 20050103 | 759936 | 1 | 2375 1001299 | 100058 | 20050103 | 759928 | 1 | 2375 1001300 | 100078 | 20050103 | 759936 | 1 | 2375 1001301 | 100017 | 20050103 | 759928 | 1 | 2375 1001302 | 100009 | 20050103 | 759936 | 2 | 4750 1001302 | 100009 | 20050203 | 756304 | 1 | 6669 1001303 | 100009 | 20050203 | 759936 | 2 | 4750 1001304 | 100005 | 20050203 | 759936 | 20 | 47500 1001306 | 100013 | 20050203 | 759936 | 2 | 4750 1001306 | 100013 | 20050203 | 759928 | 2 | 4750 1001307 | 100013 | 20050203 | 759936 | 4 | 9500 1001308 | 100013 | 20050203 | 759936 | 2 | 4750 1001309 | 100050 | 20050303 | 759936 | 2 | 4750 1001310 | 100050 | 20050303 | 759936 | 4 | 9500 .... Thanks for any idea. Mauricio Fernández A. Ingeniero de Sistemas U. Autónoma de Manizales -----BEGIN PGP SIGNATURE----- Version: PGPfreeware 6.0.2i iQA/AwUBQ4sgNc4irmZP1c6WEQLcPgCeLQNXphTXFXqVFZcKxrIO7aAfCEMAn397 jOO4lULVn/3bPLm6du7hGJeR =YSsL -----END PGP SIGNATURE----- ---------------------------(end of broadcast)--------------------------- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match