Thread: Error: column "host" does not exist
Hello,
I am working with 8.1.4 pgsql as my database backend. I have a function
written in plpgsql language, that queries a particular table as below,
select host from table_host where ip_address = ip_array[i] and port =
port_array[i];
The query is running in a for loop. I see ip_array and port_array
getting populated with correct values during the execution.
The error I see is,
ERROR: column "host" does not exist
CONTEXT: SQL statement "SELECT host"
PL/pgSQL function "sp_get_ip_data" line 286 at raise
throu psql, I can select the table_host fine.
column "host" is a primary key here.
I dont understand why I see the "column does not exist" error; any idea ?
cheers
Mayuresh
IS there any name clash with a function argument? -- Fahrbahn ist ein graues Band weisse Streifen, grüner Rand On Thursday 08 January 2009 08:30:07 Mayuresh Nirhali wrote: > Hello, > > I am working with 8.1.4 pgsql as my database backend. I have a function > written in plpgsql language, that queries a particular table as below, > > select host from table_host where ip_address = ip_array[i] and port = > port_array[i]; > > The query is running in a for loop. I see ip_array and port_array > getting populated with correct values during the execution. > The error I see is, > > ERROR: column "host" does not exist > CONTEXT: SQL statement "SELECT host" > PL/pgSQL function "sp_get_ip_data" line 286 at raise > > throu psql, I can select the table_host fine. > column "host" is a primary key here. > > I dont understand why I see the "column does not exist" error; any idea ? > > cheers > Mayuresh
In response to Mayuresh Nirhali : > Hello, > > I am working with 8.1.4 pgsql as my database backend. I have a function > written in plpgsql language, that queries a particular table as below, > > select host from table_host where ip_address = ip_array[i] and port = > port_array[i]; > > The query is running in a for loop. I see ip_array and port_array > getting populated with correct values during the execution. > The error I see is, > > ERROR: column "host" does not exist > CONTEXT: SQL statement "SELECT host" > PL/pgSQL function "sp_get_ip_data" line 286 at raise > > throu psql, I can select the table_host fine. > column "host" is a primary key here. Not sure, but host is a reserved word, see: http://www.postgresql.org/docs/8.1/interactive/sql-keywords-appendix.html Andreas -- Andreas Kretschmer Kontakt: Heynitz: 035242/47150, D1: 0160/7141639 (mehr: -> Header) GnuPG-ID: 0x3FFF606C, privat 0x7F4584DA http://wwwkeys.de.pgp.net
No. there are no name clashes. I actually changed the names in posted text a bit. The arguments, declared variables and column names, all have their unique prefixes. Thanks Mayuresh Reg Me Please wrote: > IS there any name clash with a function argument? > > -- > Fahrbahn ist ein graues Band > weisse Streifen, grüner Rand > > On Thursday 08 January 2009 08:30:07 Mayuresh Nirhali wrote: > >> Hello, >> >> I am working with 8.1.4 pgsql as my database backend. I have a function >> written in plpgsql language, that queries a particular table as below, >> >> select host from table_host where ip_address = ip_array[i] and port = >> port_array[i]; >> >> The query is running in a for loop. I see ip_array and port_array >> getting populated with correct values during the execution. >> The error I see is, >> >> ERROR: column "host" does not exist >> CONTEXT: SQL statement "SELECT host" >> PL/pgSQL function "sp_get_ip_data" line 286 at raise >> >> throu psql, I can select the table_host fine. >> column "host" is a primary key here. >> >> I dont understand why I see the "column does not exist" error; any idea ? >> >> cheers >> Mayuresh >> > > >
Please post is possible the code (DDL and function). Otherwise it'd be much more difficult. And if you change the names, please check whether the error is still there. -- Fahrbahn ist ein graues Band weisse Streifen, grüner Rand On Thursday 08 January 2009 09:15:05 Mayuresh Nirhali wrote: > No. there are no name clashes. > > I actually changed the names in posted text a bit. The arguments, > declared variables and column names, all have their unique prefixes. > > Thanks > Mayuresh > > Reg Me Please wrote: > > IS there any name clash with a function argument? > > > > -- > > Fahrbahn ist ein graues Band > > weisse Streifen, grüner Rand > > > > On Thursday 08 January 2009 08:30:07 Mayuresh Nirhali wrote: > >> Hello, > >> > >> I am working with 8.1.4 pgsql as my database backend. I have a function > >> written in plpgsql language, that queries a particular table as below, > >> > >> select host from table_host where ip_address = ip_array[i] and port = > >> port_array[i]; > >> > >> The query is running in a for loop. I see ip_array and port_array > >> getting populated with correct values during the execution. > >> The error I see is, > >> > >> ERROR: column "host" does not exist > >> CONTEXT: SQL statement "SELECT host" > >> PL/pgSQL function "sp_get_ip_data" line 286 at raise > >> > >> throu psql, I can select the table_host fine. > >> column "host" is a primary key here. > >> > >> I dont understand why I see the "column does not exist" error; any idea > >> ? > >> > >> cheers > >> Mayuresh
A. Kretschmer wrote: > Not sure, but host is a reserved word, see: > http://www.postgresql.org/docs/8.1/interactive/sql-keywords-appendix.html That list says that HOST is reserved in SQL:1999, but not in PostgreSQL.