Sorting does not work with ROW_NUMBER () OVER (ORDER BY

CREATE OR REPLACE PROCEDURE SP_SALES)
p_sales_id IN VARCHAR2,
p_rownnum_from in NUMBERS
p_rownnum_to in NUMBERS
p_sort_by IN VARCHAR2,
p_query ON SYS_REFCURSOR,
)
AS
v_query VARCHAR2 (32000);
v_sort_list VARCHAR2 (32000);
BEGIN

IF p_spv_sort_by IS NULL THEN
v_sort_list: = 'nom_donne ASC ";
ON THE OTHER
v_sort_list: = p_spv_sort_by;
END IF;

DBMS_OUTPUT. Put_line ('v_sort_list' | v_sort_list);
OPEN FOR P_query
SELECT sales_id
item_id,
order_num,
Employee_Name
nom_donne
dept_id,
manager_name,
NO_LIG
Of
(SELECT x.*,
ROW_NUMBER () OVER (ORDER BY v_sort_list) no_lig
OF (sales_id,
item_id,
order_num,
Employee_Name
nom_donne
dept_id,
manager_name,
Vaughan Williams order.
sale pol,
CA of the EMP,
WHERE pol.id = rvw.pr_order_id
AND ca.empid = pol.employee_id
(AND status = "SUP") x)
WHERE the arguments no_lig BETWEEN p_rownnum_from AND p_rownnum_to;
-ORDER by v_sort_list;
DBMS_OUTPUT. Put_line ('v_sort_list' | v_sort_list);

EXCEPTION
WHILE OTHERS THEN
DBMS_OUTPUT. PUT_LINE ('EX');
END;
END;
/
DISPLAY ERRORS


Sorting does not work. I'm doing something wrong here?

How to run for help below
declare
x SYS_REFCURSOR;
number of y;
BEGIN
SP_SALES ('70159_502', 1, 5, 'GIVEN_NAME' |') ASC',: x);
-dbms_output.put_line (: x);
END;

Hello

According to the number of columns different, you can sort on and data types, it may be possible for you to include conditional logic in the existing statement without requiring dynamic sql code...

DTYLER_APP@pssdev2> var p_spv_sort_by varchar2(100)
DTYLER_APP@pssdev2>
DTYLER_APP@pssdev2> exec :p_spv_sort_by:='some other column'

PL/SQL procedure successfully completed.

P_SPV_SORT_BY
----------------------------------------------------------------------------------------
some other column

DTYLER_APP@pssdev2>
DTYLER_APP@pssdev2> WITH source AS
  2  (   SELECT 'a' given_name, 'z' other_column from dual UNION ALL
  3      SELECT 'b' given_name, 'y' other_column from dual UNION ALL
  4      SELECT 'c' given_name, 'x' other_column from dual
  5  )
  6  SELECT
  7      given_name,
  8      other_column,
  9      ROW_NUMBER ()
 10     OVER (
 11        ORDER BY
 12           CASE
 13              WHEN :p_spv_sort_by IS NULL THEN given_name
 14              WHEN :p_spv_sort_by = 'some other column' THEN other_column
 15           END)
 16        ROW_NUM
 17  FROM
 18      source
 19  /

G O    ROW_NUM
- - ----------
c x          1
b y          2
a z          3

3 rows selected.

DTYLER_APP@pssdev2> exec :p_spv_sort_by:=NULL;

PL/SQL procedure successfully completed.

P_SPV_SORT_BY
----------------------------------------------------------------------------------------

DTYLER_APP@pssdev2> WITH source AS
  2  (   SELECT 'a' given_name, 'z' other_column from dual UNION ALL
  3      SELECT 'b' given_name, 'y' other_column from dual UNION ALL
  4      SELECT 'c' given_name, 'x' other_column from dual
  5  )
  6  SELECT
  7      given_name,
  8      other_column,
  9      ROW_NUMBER ()
 10     OVER (
 11        ORDER BY
 12           CASE
 13              WHEN :p_spv_sort_by IS NULL THEN given_name
 14              WHEN :p_spv_sort_by = 'some other column' THEN other_column
 15           END)
 16        ROW_NUM
 17  FROM
 18      source
 19  /

G O    ROW_NUM
- - ----------
a z          1
b y          2
c x          3

3 rows selected.

DTYLER_APP@pssdev2>

But this would depend on the columns that you sort to be of the same data type or at least have the possibility of converting the same type of data without loss of the sort order.

DTYLER_APP@pssdev2> WITH source AS
  2  (   SELECT 'a' given_name, sysdate - 2 other_column from dual UNION ALL
  3      SELECT 'b' given_name, sysdate - 1 other_column from dual UNION ALL
  4      SELECT 'c' given_name, sysdate  other_column from dual
  5  )
  6  SELECT
  7      given_name,
  8      other_column,
  9      ROW_NUMBER ()
 10     OVER (
 11        ORDER BY
 12           CASE
 13              WHEN :p_spv_sort_by IS NULL THEN given_name
 14              WHEN :p_spv_sort_by = 'some other column' THEN other_column
 15           END)
 16        ROW_NUM
 17  FROM
 18      source
 19  /
            WHEN :p_spv_sort_by = 'some other column' THEN other_column
                                                           *
ERROR at line 14:
ORA-00932: inconsistent datatypes: expected CHAR got DATE

DTYLER_APP@pssdev2> WITH source AS
  2  (   SELECT 'a' given_name, sysdate - 2 other_column from dual UNION ALL
  3      SELECT 'b' given_name, sysdate - 1 other_column from dual UNION ALL
  4      SELECT 'c' given_name, sysdate  other_column from dual
  5  )
  6  SELECT
  7      given_name,
  8      other_column,
  9      ROW_NUMBER ()
 10     OVER (
 11        ORDER BY
 12           CASE
 13              WHEN :p_spv_sort_by IS NULL THEN given_name
 14              WHEN :p_spv_sort_by = 'some other column' THEN TO_CHAR(other_column,'YYYYMMDDHH24MISS')
 15           END)
 16        ROW_NUM
 17  FROM
 18      source
 19  /

G OTHER_COLUMN            ROW_NUM
- -------------------- ----------
a 12-SEP-2011 15:04:19          1
b 13-SEP-2011 15:04:19          2
c 14-SEP-2011 15:04:19          3

3 rows selected.

HTH

David

Tags: Database

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