Re: [HACKERS] Table aliases in delete statements?
От | Bruce Momjian |
---|---|
Тема | Re: [HACKERS] Table aliases in delete statements? |
Дата | |
Msg-id | 199912090320.WAA03916@candle.pha.pa.us обсуждение исходный текст |
Ответ на | Re: [HACKERS] Table aliases in delete statements? (Keith Parks <emkxp01@mtcc.demon.co.uk>) |
Список | pgsql-hackers |
> >Unless your query is going to be long enough to run into query length > >limits, aliases are not your friends. Standard SQL they may be, but > >aliases always end up obscuring queries to those who come along after > >you. > > The problem is that it's difficult to refer to the same table twice > in a single query without using aliases. > > The trap I fell into was thinking I had to alias both references to > the table. > > I'd be interested in seeing alternative solutions to the duplicate > removal problem. Yes, that is tricky in that there is an aliased version and a non-alias version of the same table. -- Bruce Momjian | http://www.op.net/~candle maillist@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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