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| How can I update a system (1 record) file value that could be changed by other users? |
| 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 : 2006-02-26 12:43:25 |
On your SELECT statement, extract the value of the field, lets say MAIN.INV_NO is found to have a value of "247" and you assign it to variable OldInv. Next you would create a variable NewInv and set it to "248", which is the old value plus one, which is what you want to set it to. Then run an UPDATE statement something like:
UPDATE main SET inv_no = :NewInv WHERE inv_no = :OldInv
If the number of rows updated is 1, the update worked. If not, the value changed, retry this entire process again until it works. |
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