I'm trying to pull the last 10 records from a transactions from a
table using this query:
SELECT * FROM transactions ORDER BY timestamp DESC LIMIT 10
But I want to display the rows in ascending order by timestamp. I
can't get the subquery below to work and not sure why:
SELECT *
FROM (SELECT *
FROM transactions
ORDER BY timestamp DESC
LIMIT 10)
ORDER BY timestamp ASC;
Please help.
8  1972 
>I'm trying to pull the last 10 records from a transactions from a table using this query:
SELECT * FROM transactions ORDER BY timestamp DESC LIMIT 10
But I want to display the rows in ascending order by timestamp. I
can't get the subquery below to work and not sure why:
SELECT *
FROM (SELECT *
FROM transactions
ORDER BY timestamp DESC
LIMIT 10)
ORDER BY timestamp ASC;
Please help.
What version of MySQL are you using? Subqueries didn't start working
until about 4.1.something. Also, it doesn't work in 5.0.15 unless you
change it to:
SELECT *
FROM (SELECT *
FROM transactions
ORDER BY timestamp DESC
LIMIT 10) a
ORDER BY timestamp ASC;
since it seems to want an alias name for the derived table.
Gordon L. Burditt
The server is running:
PHP Version 4.3.11
--
On Wed, 02 Nov 2005 07:50:27 -0000, go***********@b urditt.org (Gordon
Burditt) wrote: I'm trying to pull the last 10 records from a transactions from a
table using this query:
SELECT * FROM transactions ORDER BY timestamp DESC LIMIT 10
But I want to display the rows in ascending order by timestamp. I
can't get the subquery below to work and not sure why:
SELECT *
FROM (SELECT *
FROM transactions
ORDER BY timestamp DESC
LIMIT 10)
ORDER BY timestamp ASC;
Please help.
What version of MySQL are you using? Subqueries didn't start working
until about 4.1.something. Also, it doesn't work in 5.0.15 unless you
change it to:
SELECT *
FROM (SELECT *
FROM transactions
ORDER BY timestamp DESC
LIMIT 10) a
ORDER BY timestamp ASC;
since it seems to want an alias name for the derived table.
Gordon L. Burditt
I tried the query with 'a' after ...LIMIT 10) but still doesn't work.
On Wed, 02 Nov 2005 07:50:27 -0000, go***********@b urditt.org (Gordon
Burditt) wrote: I'm trying to pull the last 10 records from a transactions from a
table using this query:
SELECT * FROM transactions ORDER BY timestamp DESC LIMIT 10
But I want to display the rows in ascending order by timestamp. I
can't get the subquery below to work and not sure why:
SELECT *
FROM (SELECT *
FROM transactions
ORDER BY timestamp DESC
LIMIT 10)
ORDER BY timestamp ASC;
Please help.
What version of MySQL are you using? Subqueries didn't start working
until about 4.1.something. Also, it doesn't work in 5.0.15 unless you
change it to:
SELECT *
FROM (SELECT *
FROM transactions
ORDER BY timestamp DESC
LIMIT 10) a
ORDER BY timestamp ASC;
since it seems to want an alias name for the derived table.
Gordon L. Burditt
>The server is running:
PHP Version 4.3.11
What version of *MYSQL* are you running?
Gordon L. Burditt
--
On Wed, 02 Nov 2005 07:50:27 -0000, go***********@b urditt.org (Gordon
Burditt) wrote:
I'm trying to pull the last 10 records from a transactions from a
table using this query:
SELECT * FROM transactions ORDER BY timestamp DESC LIMIT 10
But I want to display the rows in ascending order by timestamp. I
can't get the subquery below to work and not sure why:
SELECT *
FROM (SELECT *
FROM transactions
ORDER BY timestamp DESC
LIMIT 10)
ORDER BY timestamp ASC;
Please help.
What version of MySQL are you using? Subqueries didn't start working
until about 4.1.something. Also, it doesn't work in 5.0.15 unless you
change it to:
SELECT *
FROM (SELECT *
FROM transactions
ORDER BY timestamp DESC
LIMIT 10) a
ORDER BY timestamp ASC;
since it seems to want an alias name for the derived table.
Gordon L. Burditt
"Neeper" <ne****@hotmail .com> wrote in message
news:t6******** *************** *********@4ax.c om... I'm trying to pull the last 10 records from a transactions from a
table using this query:
SELECT * FROM transactions ORDER BY timestamp DESC LIMIT 10
But I want to display the rows in ascending order by timestamp. I
can't get the subquery below to work and not sure why:
SELECT *
FROM (SELECT *
FROM transactions
ORDER BY timestamp DESC
LIMIT 10)
ORDER BY timestamp ASC;
You could do this with a subquery *if available* in your Version of MySQL
SELECT *
FROM (SELECT * FROM transactions ORDER BY timestamp DESC LIMIT 10) As X
ORDER BY timestamp ASC;
But the use of temporary tables is equivalent and available further back in
MySQL revision history.
CREATE TEMPORARY TABLE X
SELECT * FROM transactions ORDER BY timestamp DESC LIMIT 10;
SELECT * FROM X ORDER BY timestamp ASC;
DROP TABLE X;
These (3) queries produce exactly the same result. I suspect that
subqueries simply use temporary tables behind the scenes anyway. You can
always do it yourself up front as shown.
Thomas Bartkus
"Neeper" <ne****@hotmail .com> wrote in message
news:t6******** *************** *********@4ax.c om... I'm trying to pull the last 10 records from a transactions from a
table using this query:
SELECT * FROM transactions ORDER BY timestamp DESC LIMIT 10
But I want to display the rows in ascending order by timestamp. I
can't get the subquery below to work and not sure why:
SELECT *
FROM (SELECT *
FROM transactions
ORDER BY timestamp DESC
LIMIT 10)
ORDER BY timestamp ASC;
You could do this with a subquery *if available* in your Version of MySQL.
SELECT *
FROM (SELECT * FROM transactions ORDER BY timestamp DESC LIMIT 10) As X
ORDER BY timestamp ASC;
But the use of temporary tables is equivalent and available further back in
MySQL revision history.
CREATE TEMPORARY TABLE X
SELECT * FROM transactions ORDER BY timestamp DESC LIMIT 10;
SELECT * FROM X ORDER BY timestamp ASC;
DROP TABLE X;
These (3) queries produce exactly the same result. I suspect that
subqueries simply use temporary tables behind the scenes anyway. You can
always do it yourself up front as shown.
Thomas Bartkus
I'm using mySQL 4.0.25, I'm not sure if this supports subqueries.
On Wed, 2 Nov 2005 10:08:54 -0600, "Thomas Bartkus"
<th***********@ comcast.net> wrote:
"Neeper" <ne****@hotmail .com> wrote in message
news:t6******* *************** **********@4ax. com... I'm trying to pull the last 10 records from a transactions from a
table using this query:
SELECT * FROM transactions ORDER BY timestamp DESC LIMIT 10
But I want to display the rows in ascending order by timestamp. I
can't get the subquery below to work and not sure why:
SELECT *
FROM (SELECT *
FROM transactions
ORDER BY timestamp DESC
LIMIT 10)
ORDER BY timestamp ASC;
You could do this with a subquery *if available* in your Version of MySQL.
SELECT *
FROM (SELECT * FROM transactions ORDER BY timestamp DESC LIMIT 10) As X
ORDER BY timestamp ASC;
But the use of temporary tables is equivalent and available further back in
MySQL revision history.
CREATE TEMPORARY TABLE X
SELECT * FROM transactions ORDER BY timestamp DESC LIMIT 10;
SELECT * FROM X ORDER BY timestamp ASC;
DROP TABLE X;
These (3) queries produce exactly the same result. I suspect that
subqueries simply use temporary tables behind the scenes anyway. You can
always do it yourself up front as shown.
Thomas Bartkus
"Evil Bert" <ne****@hotmail .com> wrote in message
news:a0******** *************** *********@4ax.c om... I'm using mySQL 4.0.25, I'm not sure if this supports subqueries.
I know that it *does* support the temporary table solution I indicated.
I used this trick all the time with 4.0 in order to work around the lack of
subqueries.
And now that we have subqueries available in our Ver 4.1.5 -
- I find I still prefer to use the temporary tables.
Thomas Bartkus This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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