Re: unpacking composite values
| От | Keith Worthington |
|---|---|
| Тема | Re: unpacking composite values |
| Дата | |
| Msg-id | 42BE90F4.3000102@NarrowPathInc.com обсуждение исходный текст |
| Ответ на | Re: unpacking composite values (alex <alex.ricci@arkantechnologies.com>) |
| Ответы |
Re: limit tables size
|
| Список | pgsql-novice |
alex wrote: > Hi, > > Is it possible to limit the size or the number of rows of table, in a > FIFO mode for example ?? > > Regards > > Al Hmmm, do you mean that every time a row is INSERTed that you want to delete the oldest row? How about a serial column and an AFTER INSERT trigger? The trigger could search for and delete the row with the smallest serial value. This could get real slow if your table is huge. If the volume is high enough then you will have to handle wrap around. You could simply write a script that would subtract the minimum value from all the rows when the serial reached the maximum. -- Kind Regards, Keith
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