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| How do I join the Invoice table to the InvoiceLine? |
| Author |
Message |
| Tom |
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| Group | : Administrator |
| Posts | : 5510 |
| Joined | : 2006-02-17 |
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| Profile |
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| Posted : 2006-02-22 12:39:18 |
SELECT * FROM {OJ Invoice INNER JOIN InvoiceLine ON (Invoice.TxnID = InvoiceLine.TxnID)}
But, this is not necessary. In QODBC all the children tables, like InvoiceLine contain all the fields from the Invoice (parent table). Simply do your select using InvoiceLine and reference the same fields you would in the Invoice table. This will increase your performance by many times.
A general rule of thumb. If you need to reference any field from a table that has the child table name in it, like InvoiceLineItemRefListID, then use the child table (InvoiceLine) otherwise use the parent table (Invoice). This applies to all the other parent, child (line and txn) tables. |
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