Обсуждение: mathematical calculations - sql queries

Поиск
Список
Период
Сортировка

mathematical calculations - sql queries

От
vbhatia@ksu.edu
Дата:
Hi all,

Thanks for replying to previous mail, I have one more question. Can I
write a postgresql query that retrieves a particular field from a table
and performs some mathematical calculation on that field involving
exponential( exp) and pow functions and storing the result in a new
table.


Somethign like this
select field1 from tablename1 ( performing calculation on field1 ) (
storing in another table)


Thanks and regards,
Vishal


Re: mathematical calculations - sql queries

От
"Andres Olarte"
Дата:
Sure, this is not a jdbc question, but it's fairly easy:

INSERT INTO table2 (col_name2) SELECT power(col_name1,3) FROM table1;

On 7/29/07, vbhatia@ksu.edu <vbhatia@ksu.edu> wrote:
> Hi all,
>
> Thanks for replying to previous mail, I have one more question. Can I
> write a postgresql query that retrieves a particular field from a table
> and performs some mathematical calculation on that field involving
> exponential( exp) and pow functions and storing the result in a new
> table.
>
>
> Somethign like this
> select field1 from tablename1 ( performing calculation on field1 ) (
> storing in another table)
>
>
> Thanks and regards,
> Vishal
>
>
> ---------------------------(end of broadcast)---------------------------
> TIP 9: In versions below 8.0, the planner will ignore your desire to
>        choose an index scan if your joining column's datatypes do not
>        match
>