I'd like to retrieve a row of a table that has the maximum ID. For example,
with:
id | s
+---
1 | alpha
2 | beta
3 | gamma
4 | delta
I'd like to get the row with ID=4. I've tried:
SELECT * FROM mytable WHERE id=(SELECT MAX(id) FROM mytable);
The subquery can take a /r
I'd like to retrieve a row of a table that has the maximum ID. For example,
with:
id | s
+---
1 | alpha
2 | beta
3 | gamma
4 | delta
I'd like to get the row with ID=4. I've tried:
SELECT * FROM mytable WHERE id=(SELECT MAX(id) FROM mytable);
The subquery can take a /r
At 07:31 PM 6/7/2001 +0200, Peter Eisentraut wrote:
> > SELECT * FROM mytable WHERE id=(SELECT MAX(id) FROM mytable);
> > SELECT * FROM mytable ORDER BY id DESC LIMIT 1;
>The second is generally thought to be faster, at least if you use the
>latest version of PostgreSQL.
This is quite amusing ac
>=> explain select id from mytable order by seed desc limit 1;
Oops, a cut & paste mistake. That should be:
explain select id from mytable order by id desc limit 1;
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Gerald Gutierrez <[EMAIL PROTECTED]> writes:
> I'd like to get the row with ID=4. I've tried:
> SELECT * FROM mytable WHERE id=(SELECT MAX(id) FROM mytable);
> The subquery can take a /really/ long time on a table that is large. The query:
> SELECT * FROM mytable ORDER BY id DESC LIMIT 1;
> doesn'
> A related question is: is there a way to time a query in psql, like the
> client of MySQL does?
use the explain commmand
explain select * from foo;
>
>
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