Обсуждение: Command "connect by prior" in PostgreSQL ?
Hello everybody,
In Oracle i use the command "connect by prior" and i need to use it in PostgreSQL, what is the sintax?
There is no default support but you can always use connectby() function from the tablefunc contrib module....
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Shoaib Mir
EnterpriseDB (www.enterprisedb.com )
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Shoaib Mir
EnterpriseDB (www.enterprisedb.com )
On 1/8/07, Leandro Repolho <leandrorepolho@gmail.com> wrote:
Hello everybody,In Oracle i use the command "connect by prior" and i need to use it in PostgreSQL, what is the sintax?
On Mon, 2007-01-08 at 07:38, Leandro Repolho wrote: > Hello everybody, > In Oracle i use the command "connect by prior" and i need to use it in > PostgreSQL, what is the sintax? What does connect by prior do? Reuse a connection from one db to another? I don't think there's anything like that in postgresql. You might wanna tell us what an oracle command does next time, since many folks here aren't that familiar with Oracle. Heck, I use oracle everyday and I'm not familiar with connect by prior...
It is used for Hierarchical queries in Oracle :)
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Shoaib Mir
EnterpriseDB (www.enterprisedb.com)
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Shoaib Mir
EnterpriseDB (www.enterprisedb.com)
On 1/8/07, Scott Marlowe <smarlowe@g2switchworks.com> wrote:
On Mon, 2007-01-08 at 07:38, Leandro Repolho wrote:
> Hello everybody,
> In Oracle i use the command "connect by prior" and i need to use it in
> PostgreSQL, what is the sintax?
What does connect by prior do? Reuse a connection from one db to
another? I don't think there's anything like that in postgresql.
You might wanna tell us what an oracle command does next time, since
many folks here aren't that familiar with Oracle. Heck, I use oracle
everyday and I'm not familiar with connect by prior...
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On 08.01.2007 17:24 Scott Marlowe wrote: > On Mon, 2007-01-08 at 07:38, Leandro Repolho wrote: >> Hello everybody, >> In Oracle i use the command "connect by prior" and i need to use it in >> PostgreSQL, what is the sintax? > > What does connect by prior do? Reuse a connection from one db to > another? I don't think there's anything like that in postgresql. > > You might wanna tell us what an oracle command does next time, since > many folks here aren't that familiar with Oracle. Heck, I use oracle > everyday and I'm not familiar with connect by prior... It's used to retrieve hierarchical data e.g. a parent/child relationship. The connect by operator defines the columns which define the hierarchy. Thomas
Take a look at contrib/tablefunc there is a function called connectby() that should do what you're looking for. Otherwise roll your own... http://archives.postgresql.org/pgsql-sql/2003-10/msg00374.php John Thomas Kellerer wrote: > On 08.01.2007 17:24 Scott Marlowe wrote: >> On Mon, 2007-01-08 at 07:38, Leandro Repolho wrote: >>> Hello everybody, >>> In Oracle i use the command "connect by prior" and i need to use it in >>> PostgreSQL, what is the sintax? >> >> What does connect by prior do? Reuse a connection from one db to >> another? I don't think there's anything like that in postgresql. >> You might wanna tell us what an oracle command does next time, since >> many folks here aren't that familiar with Oracle. Heck, I use oracle >> everyday and I'm not familiar with connect by prior... > > It's used to retrieve hierarchical data e.g. a parent/child > relationship. The connect by operator defines the columns which define > the hierarchy. > > Thomas > > > ---------------------------(end of broadcast)--------------------------- > TIP 2: Don't 'kill -9' the postmaster
Leandro Repolho wrote: > Hello everybody, > In Oracle i use the command "connect by prior" and i need to use it in > PostgreSQL, what is the sintax? The last time I saw this discussed, Tom Lane referred to a "pg-hier" modification but said this: "Beware that it makes an incompatible change in rule representation, which means you must initdb when installing or removing it." I was unable to find pg-hier in a quick cruise through PgFoundry. -- Guy Rouillier
> > In Oracle i use the command "connect by prior" and i need to use it in > > PostgreSQL, what is the sintax? > > I was unable to find pg-hier in a quick cruise through PgFoundry. Try http://gppl.moonbone.ru/ The patch is not yet fixed to 8.2.0. 8.1.2 looks to be the latest.