Re: Performance of column order
От
Bruce Momjian
Тема
Re: Performance of column order
Дата
Msg-id
200204181527.g3IFRxL09772@candle.pha.pa.us
Ответ на
Performance of column order (Egon Sommer)
Список
Дерево обсуждения
Performance of column order Egon Sommer <Service@Sommer-Maschinenbau.de>
Re: Performance of column order Tom Lane <tgl@sss.pgh.pa.us>
Re: Performance of column order Bruce Momjian <pgman@candle.pha.pa.us>
Egon Sommer wrote: > Hallo! > > Do anybody know if the order of the columns in a table has affect > on the performance? > > Should I use length-variable colums like TEXT, BLOB,... alfter > length-static colums like INTEGER, BOOLEAN, ...? It is very slightly faster to have variable length stuff after fixed length fields. > Is there a advantage to create a separate table for BLOBS and > TEXT joining the main table about a primary key? Probably, though TOAST stores large stuff in backup tables anyway, so there is probably little difference. -- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610) 853-3000 + If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup. | Drexel Hill, Pennsylvania 19026
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