Re: help with a procedure - Mailing list pgsql-general

Have you read this chapter of the documentation?

http://www.postgresql.org/docs/9.3/interactive/plpgsql.html


Carlos Carcamo wrote

> What I need is some help with the procedure in postgres, I have searched
> in
> google, but I dont know how to do it, the goal is perform the first insert
> and then the second insert if the first one succeed in one procedure
> instead of using two separate inserts.
>
> Do you have some code like that?
>

> 2014-06-05 10:14 GMT-06:00 Seref Arikan <

> serefarikan@

> >:

>
>> Sorry, I meant: "calling a stored procedure you'll write in postgres from
>> php"
>>
>>

>> On Thu, Jun 5, 2014 at 5:13 PM, Seref Arikan <

> serefarikan@

> >

>> wrote:
>>
>>> Hi Carlos,
>>> When you say procedures, do you mean calling a stored procedure you'll
>>> write from php? Or executing the individual INSERT from php
>>> sequentially?
>>> For the first scenario, you'd need to write a postgresql stored
>>> procedure
>>> (I suggest you google: PL/pgSQL tutorial) and call the from php. For the
>>> second, well, it is exactly what I said before: you'll need to open a
>>> connection to postgres, execute your statements under a transaction and
>>> commit. I'd suggest you either search for php and postgres or ask this
>>> to a
>>> php mail group. Your goal here appears to be understanding how to call
>>> postgres from php.
>>>
>>> Regards
>>> Seref
>>>
>>>
>>>
>>>

>>> On Thu, Jun 5, 2014 at 5:03 PM, Carlos Carcamo <

> eazyduiz@

> >

>>> wrote:
>>>
>>>> Thanks for answering...
>>>> I'm using php with postgresql 9.1, I have never used procedures with
>>>> php, I'm new with postgresql
>>>>
>>>>

>>>> 2014-06-05 9:45 GMT-06:00 Seref Arikan <

> serefarikan@

> >:

>>>>
>>>> Hi Carlos,
>>>>> Unless I'm missing something here, your queries are probably being
>>>>> called from a programming language (java/c# etc) and your database
>>>>> access
>>>>> api should support transactions. If you perform both operations under
>>>>> the
>>>>> same db transaction and commit your transaction things should be fine.
>>>>> If
>>>>> there is a problem with the first INSERT, your api should throw an
>>>>> exception and you won't be able to commit the transaction (you may/may
>>>>> not
>>>>> need to call rollback in your catch block), so it'll either be both
>>>>> calls
>>>>> executed or none.
>>>>>
>>>>> You may want to read about how db transactions are handled in your
>>>>> programming environment.
>>>>>
>>>>> Regards
>>>>> Seref
>>>>>
>>>>>
>>>>>

>>>>> On Thu, Jun 5, 2014 at 4:36 PM, Carlos Carcamo <

> eazyduiz@

> >
>>>>> wrote:
>>>>>
>>>>>>
>>>>>> 2014-06-05 9:32 GMT-06:00 Carlos Carcamo <

> eazyduiz@

> >:

>>>>>>
>>>>>> Hi everyone, I wonder if you could help me with a procedure that I
>>>>>>> would like to perform in postgresql.
>>>>>>>
>>>>>>> I have an insert query like this:
>>>>>>>
>>>>>>> INSERT INTO products (product_id, description, price, qty, ...)
>>>>>>> values ('01', 'some description', 10.15, 5, ...)
>>>>>>>
>>>>>>> then if there is no problem, perform another query like:
>>>>>>>
>>>>>>> INSERT INTO store(store_id, description, price, qty, ...) values
>>>>>>> ('02', 'some description', 10.15, 5, ...)
>>>>>>>
>>>>>>> So the second query depends of the first query, if the first one
>>>>>>> succeed the second will perform the second insert
>>>>>>>
>>>>>>> I would like to do something like:
>>>>>>>
>>>>>>> SELECT myProcedure(product_id, p_description, price, qty, store_id,
>>>>>>> store_description );
>>>>>>>
>>>>>>> waiting for a response from procedure, maybe true or false.
>>>>>>>
>>>>>>> Thanks in advance...
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> "El desarrollo no es material es un estado de conciencia metal"
>>>>>>>
>>>>>>
>>>>>> Sorry,  the second query looks like:
>>>>>> INSERT INTO store(store_id, description, product_id, price, qty, ...)
>>>>>> values ('02', 'some description', '01', 10.15, 5, ...)
>>>>>>
>>>>>> --
>>>>>> "El desarrollo no es material es un estado de conciencia metal"
>>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>> --
>>>> "El desarrollo no es material es un estado de conciencia metal"
>>>>
>>>
>>>
>>
>
>
> --
> "El desarrollo no es material es un estado de conciencia metal"

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