Re: SQL3 UNDER
От | Stephan Szabo |
---|---|
Тема | Re: SQL3 UNDER |
Дата | |
Msg-id | 024c01bfc519$065d1100$0c64010a@kick.com обсуждение исходный текст |
Ответ на | Re: SQL3 UNDER (Chris Bitmead <chrisb@nimrod.itg.telstra.com.au>) |
Список | pgsql-hackers |
> Chris Bitmead wrote: > >Peter Eisentraut wrote: > > Agreed, but note that according to the final SQL99 standard the UNDER > > clause comes before the originally defined column list, which does make > > sense because that's how the columns end up. > Are you sure? It actually looks to me like you can have the UNDER before > or after. What sense do you make of that? (Note the <table element > list> occuring before and after the <subtable clause>. > <table definition> ::= > CREATE [ <table scope> ] TABLE <table name> > <table contents source> > [ ON COMMIT <table commit action> ROWS ] > > <table contents source> ::= > <table element list> > | OF <user-defined type> > [ <subtable clause> ] > [ <table element list> ] > <subtable clause> ::= > UNDER <supertable clause> Actually, from this I'd say Peter was right unless I'm horribly misreading the grammar piece provided, <table element list> doesn't come both before and after <subtable clause> in the <table contents source>, it is either alone, or part of the OF...<table element list> with the | breaking the two options.
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