Ok. I got it working by adding "and assembliesBatch.AssembliesBatchID=a.AssembliesBatchID" to the where clause. This seems a bit awkward sytactically. Is there a cleaner way of doing it?
Thank You Sim Zacks IT Manager CompuLab 04-829-0145 - Office 04-832-5251 - Fax ________________________________________________________________________________ The following query updated all the rows in the AssembliesBatch table, not just where batchID=5. There are 2 rows in the AssembliesBatch table with batch ID of 5 and I wanted to update both of them with their price, based on the data in the from clause. One row has 105 units and the other row has 2006 units. the active price in both rows is 6.6 and the pricedifferential is 0. My expectation is that the first row would be updated to 693 and the second to be updated to 13239.6. Instead every row in the table was updated to 693. This syntax works in MS SQL Server to update exactly as I expected, with the difference that you have to use the aliasname after the update keyword and postgresql does not allow that. If anyone can help, I would greatly appreciate it. update AssembliesBatch set BuildPrice=a.units*(coalesce(ActivePrice,0) + coalesce(PriceDifferential,0)) from AssembliesBatch a join assemblies b on a.AssemblyID=b.assemblyID left join qry_AssemblyPrices c on c.AssemblyID=b.assemblyID left join ProductQuantityPrice d on d.ProductID=b.ProductID inner join qry_TotalBatchProductCards e on e.ProductID=b.ProductID and e.BatchID=a.BatchID and e.TotalCards between minquantity and maxquantity where a.BatchID=5; Thank You Sim Zacks IT Manager CompuLab 04-829-0145 - Office 04-832-5251 - Fax ---------------------------(end of broadcast)--------------------------- TIP 9: the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match ---------------------------(end of broadcast)--------------------------- TIP 4: Don't 'kill -9' the postmaster