Обсуждение: Problem with Attribute.

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Problem with Attribute.

От
Rado Petrik
Дата:
Hi , 

I have table picture_path.


1. Step one. Write query to psql. 

power2=# select *  from picture_path ;

retur: 
id_path | p_path | count  
---------+--------+--------
(0 rows)


2. Step two. Write query.

power2=# select count from picture_path;

return: 

ERROR:  Attribute 'count' not found
power2=# 

Why ? 


This is dump table picture_path.

CREATE TABLE "picture_path" (  "id_path" int4 DEFAULT nextval('"picture_path_id_path_seq"'::text)
NOT NULL,  "p_path" varchar(20) NOT NULL,  "count " int2 NOT NULL
);

Thanks. 
- 
Rado Petrik <r.p@szm.sk>

Re: Problem with Attribute.

От
"Victor Yegorov"
Дата:
* Rado Petrik <r.p@szm.sk> [06.05.2003 12:54]:
> power2=# select count from picture_path;
>
> return:
>
> ERROR:  Attribute 'count' not found
> power2=#
>
> Why ?

count() is a function.
so:

select count(*) from picture_path;

--

Victor Yegorov

Re: Problem with Attribute.

От
Popeanga Marian
Дата:
\d  picture_path  in pgsql  what returns ?

Rado Petrik wrote:

>Hi , 
>
>I have table picture_path.
>
>
>1. Step one. Write query to psql. 
>    
>
>power2=# select *  from picture_path ;
>
>retur: 
>
> id_path | p_path | count  
>---------+--------+--------
>(0 rows)
>
>
>2. Step two. Write query.
>
>power2=# select count from picture_path;
>
>return: 
>
>ERROR:  Attribute 'count' not found
>power2=# 
>
>Why ? 
>
>
>This is dump table picture_path.
>
>CREATE TABLE "picture_path" (
>   "id_path" int4 DEFAULT nextval('"picture_path_id_path_seq"'::text)
>NOT NULL,
>   "p_path" varchar(20) NOT NULL,
>   "count " int2 NOT NULL
>);
>
> 
>Thanks. 
>- 
>Rado Petrik <r.p@szm.sk>
>
>
>---------------------------(end of broadcast)---------------------------
>TIP 3: if posting/reading through Usenet, please send an appropriate
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>
>  
>

-- 
Popeanga Marian
DBA Oracle
CNLO Romania

Re: Problem with Attribute.

От
Achilleus Mantzios
Дата:
On 6 May 2003, Rado Petrik wrote:

> Hi , 
> 
> I have table picture_path.
> 
> 
> 1. Step one. Write query to psql. 
>     
> 
> power2=# select *  from picture_path ;
> 
> retur: 
> 
>  id_path | p_path | count  
> ---------+--------+--------
> (0 rows)
> 
> 
> 2. Step two. Write query.
> 
> power2=# select count from picture_path;
> 
> return: 
> 
> ERROR:  Attribute 'count' not found
> power2=# 
> 
> Why ? 

maybe you need
select "count " from picture_path;

> 
> 
> This is dump table picture_path.
> 
> CREATE TABLE "picture_path" (
>    "id_path" int4 DEFAULT nextval('"picture_path_id_path_seq"'::text)
> NOT NULL,
>    "p_path" varchar(20) NOT NULL,
>    "count " int2 NOT NULL
> );
> 
>  
> Thanks. 
> - 
> Rado Petrik <r.p@szm.sk>
> 
> 
> ---------------------------(end of broadcast)---------------------------
> TIP 3: if posting/reading through Usenet, please send an appropriate
> subscribe-nomail command to majordomo@postgresql.org so that your
> message can get through to the mailing list cleanly
> 

-- 
==================================================================
Achilleus Mantzios
S/W Engineer
IT dept
Dynacom Tankers Mngmt
Nikis 4, Glyfada
Athens 16610
Greece
tel:    +30-210-8981112
fax:    +30-210-8981877
email:  achill@matrix.gatewaynet.com       mantzios@softlab.ece.ntua.gr