Обсуждение: SELECT TOP X -- part 2 -- parse error?

Thanks for the answers. I downloaded and installed PG5... now I have a new
problem. I can't seem to access any documentation on the syntax of the new
additions to PG5, and I'm getting a parse error with the following command
SELECT * FROM database LIMIT 5

It says
parse error at or near "5"

Also PSQL seems to still say 6.4.2 and have all the 6.4.2 functions
described in its help files. Is this indicative of a bad install? Everything
I saw appeared to indicate PG5 had installed properly and this parse error
leads me to think it is trying to interpret the LIMIT command but is having
problems with syntax.

Justin

-----Original Message-----
From: owner-pgsql-sql@postgreSQL.org
[mailto:owner-pgsql-sql@postgreSQL.org] On Behalf Of Justin Long
Sent: Thursday, April 22, 1999 10:33 AM
To: pgsql-sql@hub.org
Subject: [SQL] SELECT TOP _x_ ??


In Microsoft SQL Server you could issue a command
SELECT TOP 5 * FROM database...


The top 5 indicator would mean to take the top 5 records that matched the
criteria. I can't seem to find any way to do this in PostgreSQL. I have a
database of 385 records (which will grow rapidly over the next few months)
and it takes better than 5 seconds to SELECT from the 385 and then use a
while loop to display the top 4. I can't imagine what it will be like when
we reach, say, 10,000 records! So any suggestions for selecting just the top
5 and speeding the process up a bit?

Any responses will be greatly appreciated. Respond here or to
JustinLong@strategicnetwork.org ...


Never retreat. Never surrender. Never cut a deal with a dragon.
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Justin Long ha scritto:

> Thanks for the answers. I downloaded and installed PG5... now I have a new
> problem. I can't seem to access any documentation on the syntax of the new
> additions to PG5, and I'm getting a parse error with the following command
>
>         SELECT * FROM database LIMIT 5
                                        ^^^^^^^^
database ????
the right syntax is:   SELECT * FROM table LIMIT 5

>
> It says
>
>         parse error at or near "5"
>

EXAMPLE:

prova=> select * from test limit 1; v|  c|  i
---+---+---
123|123|123
(1 row)

José