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Thread: Command to execute SQL string

Command to execute SQL string

From
Łukasz Jarych
Date:
Hello,

i have a table when i have string in each row,
for example "DELETE FROM t_test WHERE ID = 3". 

I want to execute for each row this command. 
It is possible? 

Best wishes,
Jacek

Re: Command to execute SQL string

From
Francisco Olarte
Date:
Hello:



On Thu, Mar 8, 2018 at 1:26 PM, Łukasz Jarych <jaryszek@gmail.com> wrote:
> i have a table when i have string in each row,
> for example "DELETE FROM t_test WHERE ID = 3".
>
> I want to execute for each row this command.
> It is possible?

I supose you mean execute the command contained in each row. Anyway,
it is easy with a procedure, look for example at

https://www.postgresql.org/docs/10/static/plpgsql-statements.html#PLPGSQL-STATEMENTS-EXECUTING-DYN

just do a loop on your command table, follow the examples and you
should be done.

Francisco Olarte.

PS:
> Jacek
Is this the same as Łukasz or Jarych ?

F.O.

Re: Command to execute SQL string

From
Łukasz Jarych
Date:
Hello Francisco,

thank you ! 

Jacek is the same as Łukasz. Is my second name and my artist's nickname ;-) 

love your answer,
thank you!

Best,
Jacek

2018-03-08 13:40 GMT+01:00 Francisco Olarte <folarte@peoplecall.com>:
Hello:



On Thu, Mar 8, 2018 at 1:26 PM, Łukasz Jarych <jaryszek@gmail.com> wrote:
> i have a table when i have string in each row,
> for example "DELETE FROM t_test WHERE ID = 3".
>
> I want to execute for each row this command.
> It is possible?

I supose you mean execute the command contained in each row. Anyway,
it is easy with a procedure, look for example at

https://www.postgresql.org/docs/10/static/plpgsql-statements.html#PLPGSQL-STATEMENTS-EXECUTING-DYN

just do a loop on your command table, follow the examples and you
should be done.

Francisco Olarte.

PS:
> Jacek
Is this the same as Łukasz or Jarych ?

F.O.

Re: Command to execute SQL string

From
"David G. Johnston"
Date:
On Thursday, March 8, 2018, Francisco Olarte <folarte@peoplecall.com> wrote:
On Thu, Mar 8, 2018 at 1:26 PM, Łukasz Jarych <jaryszek@gmail.com> wrote:
> i have a table when i have string in each row,
> for example "DELETE FROM t_test WHERE ID = 3".
>
> I want to execute for each row this command.
> It is possible?

I supose you mean execute the command contained in each row. Anyway,
it is easy with a procedure, look for example at

https://www.postgresql.org/docs/10/static/plpgsql-statements.html#PLPGSQL-STATEMENTS-EXECUTING-DYN


See also v10 psql \gexec

David J.