Hi Pavel, Thanks for the info. But is it not possible to have some kind of handling of an empty result set using libpq for the given procedure?
Regards, Sasmit Utkarsh +91-7674022625 On Thu, Apr 25, 2024 at 8:26 PM Pavel Stehule <pavel.steh...@gmail.com> wrote: > Hi > > čt 25. 4. 2024 v 12:57 odesílatel Sasmit Utkarsh <utkarshsas...@gmail.com> > 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)* >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> *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 >> >
