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help / color / mirror / Atom feedFrom: Pavel Stehule <[email protected]>
To: Sasmit Utkarsh <[email protected]>
Cc: [email protected]
Subject: Re: Need some assistance on stored procedures execution using libpq in C
Date: Thu, 25 Apr 2024 16:56:14 +0200
Message-ID: <CAFj8pRAJKfcgS7TmC=ou_WrrA+8VmpUi1FtO2u4SMSQhLC+rZA@mail.gmail.com> (raw)
In-Reply-To: <CAM-5MT2-Sr8CquG96KWfz05b1smh4giP8xisyiT1qxL5vqpgiQ@mail.gmail.com>
References: <CAM-5MT2-Sr8CquG96KWfz05b1smh4giP8xisyiT1qxL5vqpgiQ@mail.gmail.com>
Hi
čt 25. 4. 2024 v 12:57 odesílatel Sasmit Utkarsh <[email protected]>
napsal:
> Hi PostgreSQL Team,
>
> I'm trying to execute the stored procedure(details along with the program
> in the attachment) to fetch the records from the table for the inputs given
> in the code as well. I have already created the procedure in the db. But I
> see some strange output when I try to fetch the details from the table
> using *PQexecPrepared*, even though there are no records for the given
> input. I see that this message nTuples(rows)=1 along with procedure
> successful execution. How to better handle this?
> when it returned probably an empty result set. Please advise
>
PQ interface is designed for client server communication
you should to use SPI API
https://www.postgresql.org/docs/current/spi.html
Regards
Pavel
>
> *Output:*
>
>
>
>
>
> *sasmit@sasmit-Virtual-Machine:~/test$ ./test_proceduresmain() Connection
> to shadow_shc_data database SUCCESSFULmain() nFields(cols)=2
> nTuples(rows)=1SELECT operation succeeded on Shadow DBmain() blk_size
> returned is 7565871*
>
> *DB:*
>
>
>
>
>
>
>
>
>
>
> *[nix-shell:/ext/shb/tpfasm/shares-c]$ psql shadow_shc_datapsql (14.9,
> server 12.16 (Ubuntu 12.16-0ubuntu0.20.04.1))Type "help" for
> help.shadow_shc_data=# select * from fs_data;shadow_shc_data=# CALL
> SQL_select_data_procedure(-335509949,false , NULL, NULL); blksize |
> fadata---------+-------- |(1 row)*
>
>
>
>
>
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>
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>
>
>
>
>
> *shadow_shc_data-# \dfList of functions-[ RECORD 1
> ]-------+-----------------------------------------------------------------------------------------------------------------Schema
> | publicName | sql_insert_data_procedureResult
> data type |Argument data types | fa integer, ft integer, ord integer,
> xaddr text, recid text, blk_size integer, indata bytea, INOUT outdata
> byteaType | proc-[ RECORD 2
> ]-------+-----------------------------------------------------------------------------------------------------------------Schema
> | publicName | sql_select_data_procedureResult
> data type |Argument data types | fa integer, hold boolean, INOUT blksize
> integer, INOUT fadata byteaType | proc-[ RECORD 3
> ]-------+-----------------------------------------------------------------------------------------------------------------Schema
> | publicName | sql_update_data_procedureResult
> data type |Argument data types | indata bytea, unhold boolean, fa
> integerType | proc*
>
> Regards,
> Sasmit Utkarsh
> +91-7674022625
>
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Subject: Re: Need some assistance on stored procedures execution using libpq in C
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