Re: [SQL] Porting MySQL's DESCRIBE and ENUM features

From: Peter Eisentraut <e99re41(at)DoCS(dot)UU(dot)SE>
To: Mark Stosberg <mark(at)summersault(dot)com>
Cc: pgsql-sql(at)postgreSQL(dot)org
Subject: Re: [SQL] Porting MySQL's DESCRIBE and ENUM features
Date: 1999-11-13 17:04:41
Message-ID: Pine.GSO.4.02A.9911131755250.606-100000@Val.DoCS.UU.SE
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I would myself be interested to see how the check constraints are stored,
so I can put this into the psql \d command.

mySQL's DESCRIBE is the same as the \d command in psql (Note: psql !=
Pgsql). There is no backend-level command doing this, but you are free to
query the system catalogues similar to how psql does it.

So it seems like there is no need to do a whole lot of work here. As soon
as I get the word on the contraints, I'll implement them.

-Peter

On Sat, 13 Nov 1999, Mark Stosberg wrote:

>
> Hello,
>
> I'm helping to port some somewhere from MySQL to Postgres, and am
> looking for an equivalent to MySQL's DESCRIBE function. Do you know of
> one for Postgres?
> Specifically, one way DESCRIBE is used in this software is to get the
> values from ENUM, where a MySQL column declaration might look like this:
>
> ReceiveMail ENUM ('Yes', 'No') NOT NULL DEFAULT 'Yes',
>
> I can get the same functionality in Postgres like this, but what can
> use to get the values back of what's being checked? Thanks!
>
> ReceiveMail CHAR(3) check(ReceiveMail in ('Yes', 'No')) NOT NULL
> DEFAULT 'Yes',
>
> -mark
> <<-------------------------------------------------------------->>
> personal website < Summersault Website Design
> http://mark.stosberg.com/ > http://www.summersault.com/
>
> ************
>
>

--
Peter Eisentraut Sernanders vaeg 10:115
peter_e(at)gmx(dot)net 75262 Uppsala
http://yi.org/peter-e/ Sweden

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