Re:Function

From: <dgoulet_at_vicr.com>
Date: Mon, 04 Feb 2002 09:59:23 -0800
Message-ID: <F001.0040517A.20020204095136@fatcity.com>

Hamid,

Your problem is in the first select statement's where clause. By enclosing :table_name in single quotes it becomes the table name vs. the passed in parameter. In a function this should be:

"WHERE TABLE_NAME = table_name AND COLUMN_ID = 2;"

Now your only problem is that Oracle and PL/SQL will probably mix up TABLE_NAME and table_name. Could get a little messy. BTDT. Recommended solution is to rename the local variable to user_table_name or something like that.

Dick Goulet

____________________Reply Separator____________________
Author: Hamid Alavi <hamid.alavi_at_quovadx.com>
Date:       2/4/2002 9:07 AM

Hi list,

I have this function it's compile ok but doesn't return any value:

CREATE OR REPLACE function f_get_desc2

     (table_name in varchar2,
      code_column_name in varchar2,
      code_id in varchar2)
      return varchar2
   is
      return_desc varchar2 (100) ;
          DESC_VAL VARCHAR2(100);

begin
SELECT COLUMN_NAME INTO DESC_VAL FROM USER_TAB_COLUMNS ????? WHERE TABLE_NAME =':table_name' AND COLUMN_ID = 2 ; ????
-- here I want to get the description column name from
user)tab_columns.....then get the value based on the ID

      execute immediate 'select ' || DESC_VAL ||
         ' from ' || table_name || ' where ' || code_column_name ||
         ' = :id' into return_desc using code_id ;
      return return_desc ;

end ;
/

I pass column_name ,code & value of the code to function then get the name of description Column from table_name and finally get the description based on table_name,descripton column & value, BUT doesn't return any value I am not sure but the ?mark lines doesn't return any value.

Thanks for your help.

Hamid Alavi
Office 818 737-0526
Cell 818 402-1987

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Author: Hamid Alavi
INET: hamid.alavi_at_quovadx.com

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Author:
INET: dgoulet_at_vicr.com

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