Re: Proposal: TRUNCATE TABLE table RESTRICT
От | Bruce Momjian |
---|---|
Тема | Re: Proposal: TRUNCATE TABLE table RESTRICT |
Дата | |
Msg-id | 200010030321.XAA04612@candle.pha.pa.us обсуждение исходный текст |
Ответ на | Proposal: TRUNCATE TABLE table RESTRICT (Tatsuo Ishii <t-ishii@sra.co.jp>) |
Список | pgsql-hackers |
Can someone comment on this? > It seems the truncate command deletes all rows from a table even it is > referenced by another tables. TRUNCATE is not in the standard any way, > so I would not claim this is a bug. However, sometimes it would be > helpful for a user to let him notice that the table about to be > truncated is referenced by some tables. So I would propose to add > "RESTRICT" option to the command. I mean if RESTRICT is specified, > TRUNCATE will fail if the table is referenced. > > BTW, the keyword "RESTRICT" is inspired by the fact that DROP TABLE > has the same option according to the standard. If a table is > referenced by some tables and the drop table command has the RESTRICT > option, it would fail. This seems to be a nice feature too. > > Comments? > -- > Tatsuo Ishii > -- 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, Pennsylvania19026
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