Re: new calculated column
От | Viacheslav N Tararin |
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Тема | Re: new calculated column |
Дата | |
Msg-id | 3D7CA9AB.8070903@dekasoft.com.ua обсуждение исходный текст |
Ответ на | new calculated column (andres javier garcia garcia <andresjavier.garcia@wanadoo.es>) |
Список | pgsql-sql |
For implicit modification you can use a trigger on the table. If you wan't store this data, you can use view. andres javier garcia garcia ?????: >Hi; > >I've got a table with two fields and about 3000 rows, the second one is a >character field, what can have about twenty different values; of course these >values are repeated a lot of times in the table. I need to create a new >column of type integer, whose value depens on the character fields. The >values of the new column are not important, the important thing is who can I >create this column and assign a different integer to a different char value >in the other column. >Thanks >-------------- >Javier > >---------------------------(end of broadcast)--------------------------- >TIP 3: if posting/reading through Usenet, please send an appropriate >subscribe-nomail command to majordomo@postgresql.org so that your >message can get through to the mailing list cleanly > > > >
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