Re: [INTERFACES] outer join in PostgreSql
От | Hannu Krosing |
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Тема | Re: [INTERFACES] outer join in PostgreSql |
Дата | |
Msg-id | 3A647A62.BB0B0DA@tm.ee обсуждение исходный текст |
Ответ на | improve performance (Alexaki Sofia <alexaki@ics.forth.gr>) |
Ответы |
Re: [INTERFACES] outer join in PostgreSql
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Список | pgsql-sql |
Thomas Lockhart wrote: > > Mauricio Hipp Werner wrote: > > > > I need help, which is the symbol used in postgreSql to carry out the outer > > join. > > > > in oracle the is used (+) > > in sybase the is used * and > > in postgreSql? > > The PostgreSQL outer join is accomplished using SQL92 syntax. You will > not find real outer joins *except* in the current beta release, and > beware that there may be some tweaks to the grammar to help with > conformance to the standard. > > In any case, check the standard or try something like "select * from t1 > left outer join t2 on (i)". To get a feel you could use MS Access visual query builder and then view the source. I have not checked it lately, but it very likely produces SQL92 compliant outer joins. ----------- Hannu
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