Запрос не имеет назначения для результирующих данных

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при выполнении следующей функции я получаю

query has no destination for result data
HINT:  If you want to discard the results of a SELECT, use PERFORM instead.error

может ли кто - нибудь разобраться в этой проблеме..

Что я уже пробовал:

CREATE OR REPLACE FUNCTION Udf_HelpWindomaster(
	p_Action     VARCHAR(5), 
	p_colname varchar(100),
	p_colvalue varchar(100),
    p_User_id  VARCHAR(10) , 
    p_Comapny  Integer	
	) returns refcursor
AS $$ 
	declare v_query TEXT; v_Addquery text ;query_name refcursor;

BEGIN 
       
          Declare v_Mastertype VARCHAR(100); 
          v_Status CHAR(1); 
          v_M_DataDesc VARCHAR(100); 
          v_M_DataShrtdesc VARCHAR(25);
  BEGIN
          IF p_Action = 'FE' 
            THEN 
				CREATE SEQUENCE TblColumn_seq;
				
                CREATE TEMP TABLE TblColumn
                  ( 
                     id INTEGER DEFAULT NEXTVAL ('TblColumn_seq') , 
                     Columns VARCHAR(100) 
                  );
  				CREATE SEQUENCE TblValue_seq;
                CREATE TEMP TABLE TblValue
                  ( 
                     id INTEGER DEFAULT NEXTVAL ('TblValue_seq') , 
                     Value TEXT 
                  );

               INSERT INTO TblColumn(Columns) 
               SELECT SplitString(p_Colname,'$');

               INSERT INTO TblValue(Value) 
               SELECT SplitString(p_Colvalue,'$');

                 SELECT v_Mastertype=a.Value   
                      FROM TblValue a inner join TblColumn b on a.id=b.id
                      WHERE  b.columns = 'Mastertype'; 

                 SELECT v_Mastertype=a.Value   
                      FROM  TblValue a Inner Join TblColumn b on a.Id=b.Id
                      WHERE  b.columns = 'Master_type'; 

                 SELECT v_M_DataShrtdesc=a.Value   
                      FROM  TblValue a Inner Join TblColumn b on a.Id=b.Id
                      WHERE  b.columns = 'M_DataShrtdesc'; 

                 SELECT v_Status=a.Value  
                      FROM  TblValue a Inner Join TblColumn b on a.Id=b.Id
                      Where b.columns = 'Status'; 
   
                v_Addquery := ''; 

                IF v_Mastertype <> '' THEN 
                  v_Addquery := v_Addquery || ' AND Mastertype=''' || v_Mastertype 
                                  || '''';
                END IF; 

                IF v_Status <> '' THEN 
                  v_Addquery := v_Addquery || ' AND Status=''' || v_Status || '''';
                END IF; 

                IF v_M_DataShrtdesc <> '' THEN 
                  v_Addquery := v_Addquery || ' AND M_DataShrtdesc=''' 
                                  || v_M_DataShrtdesc || '''';
                END IF; 

                 v_query := 'SELECT M_DataDesc [Master Data],
									Mastertype AS [Master Type],
									CASE WHEN Status=''L'' THEN ''Live'' 
										 WHEN Status=''D'' THEN ''DeActivated''  
										 WHEN Status=''R'' THEN ''ReActivated'' 
									 END Status,
									 M_DataShrtdesc  
							 FROM Los_HWMaster WITH (NOLOCK) WHERE 1=1 AND CompanyCode ='''
							|| TO_CHAR (p_p_Comapny) 
							|| '''   ';
				v_query := v_query || v_Addquery || ' ORDER BY LstMByDt DESC'; 

				open query_name for execute v_query;
				return query_name;
				
		END IF; 

	    IF p_Action = 'SE' 
			THEN 
				  v_Addquery := ''; 
				  v_Addquery := v_Addquery || ' AND Mastertype=''' || p_p_Colvalue 
								  || ''''; 
				  v_query := 
							'SELECT M_DataDesc ,OrderNo FROM Los_HWMaster WHERE 1=1  AND CompanyCode =''' 
							|| TO_CHAR (p_p_Comapny) || '''  '; 
				  v_query := v_query || v_Addquery || ' ORDER BY OrderNo'; 

				open query_name for execute v_query;
				return query_name;
	
		END IF; 
	END;
	
END ;$$ LANGUAGE plpgsql; 

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