How to put a table as parameter name in the name of the cursor and the header as a variable?

Hello

I have the code:
create or replace procedure transpose_table_row2column(table_source IN VARCHAR2 ,table_result IN VARCHAR2) is

-- set serveroutput on;

v_nazwa_kamp      varchar2(100);
v_czas_start      date;
v_czas_stop       date;
err_code          varchar2(50);
err_msg           varchar2(2000);

cmd_1_drop        varchar2(50);
cnt_1             pls_integer;
cnt_2             pls_integer;
cnt_3             pls_integer;
cnt_4             pls_integer;
v_col_name        varchar2(50);
test              varchar2(5);

-- deklaracja wyjatku dla nieistniejacej lub niedostepnej tabeli
TableDoesNotExist     EXCEPTION;
PRAGMA EXCEPTION_INIT(TableDoesNotExist, -942);

-- nazwa pierwszej kolumny tabeli zrodlowej
cursor first_column is
    SELECT column_name FROM USER_TAB_COLUMNS WHERE TABLE_NAME = upper(table_source) and column_id = 1;

-- wartosci z pierwszej kolumny tabeli zrodlowej
cursor first_col_data_header is
       select v_col_name from table_source;



begin

test := 'true';
v_nazwa_kamp := 'transpose_table_row2column';
v_czas_start := sysdate;


-- sprawdzenie czy istnieje tabela zrodlowa
BEGIN
         EXECUTE IMMEDIATE 'SELECT count(*) FROM ' || table_source INTO cnt_4;
EXCEPTION
         WHEN TableDoesNotExist
         THEN
             test := 'false';
             err_code := SQLCODE;
             err_msg := substr(SQLERRM, 1, 2000);
             INSERT INTO log_errors (time_err, object_name, campaign_name, error_number, error_message)
             VALUES (sysdate, 'transpose_table_row2column', v_nazwa_kamp, err_code, err_msg);
             COMMIT;
         
         WHEN NO_DATA_FOUND
         THEN
             test := 'false';
             err_code := SQLCODE;
             err_msg := substr(SQLERRM, 1, 2000);
             INSERT INTO log_errors (time_err, object_name, campaign_name, error_number, error_message)
             VALUES (sysdate, 'transpose_table_row2column', v_nazwa_kamp, err_code, err_msg);
             COMMIT;
             
         WHEN OTHERS
         THEN
             test := 'false';
             err_code := SQLCODE;
             err_msg := substr(SQLERRM, 1, 2000);
             INSERT INTO log_errors (time_err, object_name, campaign_name, error_number, error_message)
             VALUES (sysdate, 'transpose_table_row2column', v_nazwa_kamp, err_code, err_msg);
             COMMIT;
END;



-- jesli istnieje tabela zrodlowa to przetwarzamy
if test = 'true' then 



-- pobieram nazwe pierwszej kolumny tabeli zrodlowej
for v_first_column in first_column
loop
  v_col_name := v_first_column.column_name;
end loop;


-- sprawdzenie czy istnieje tabela docelowa, jesli tak to trzeba usunac
select count(*) into cnt_1 from user_tables t
where t.table_name = upper(table_result);

-- jesli istnieje tabela docelowa to usuwamy
if cnt_1 > 0 then
   cmd_1_drop := 'DROP TABLE ' || table_result;
   execute immediate cmd_1_drop;
end if;



-- pobranie liczby wierszy tabeli zrodlowej - nalezy stworzyc tyle samo kolumn w tabeli docelowej
-- ponizej sprawdzenie czy w pierwszej kolumnie tabeli zrodlowej sa unikalne wartosci - jesli nie to nie mozna 
-- transponowac tabeli poniewaz musi ona miec te wartosci jako naglowki nowej tabeli i musza wystepowac one tylko 1 raz
execute immediate 'select count(' || v_col_name || ') from ' || table_source into cnt_2; 
execute immediate 'select count(distinct ' || v_col_name || ') from ' || table_source into cnt_3; 


-- jesli wartosci w 1 kolumnie sa unikalne to przetwarzamy dalej
if cnt_2 = cnt_3 then



-- tutaj rozpoczynamy odczytywanie tabeli zrodlowej i tworzenie nowej przetransponowanej tabeli

for v_first_col_data_header in first_col_data_header
loop
  DBMS_OUTPUT.PUT_LINE(': ' || v_first_col_data_header.v_col_name);
end loop;








v_czas_stop:= sysdate;

insert into log_campaigns (campaign_name, time_start, time_stop, records_count, time_diff_min)
values (v_nazwa_kamp, v_czas_start, v_czas_stop, cnt_2, round((v_czas_stop - v_czas_start) * 24 * 60, 2));
commit;


end if;
end if;


EXCEPTION
       WHEN OTHERS THEN
          err_code := SQLCODE;
          err_msg := substr(SQLERRM, 1, 2000);

          INSERT INTO log_errors (time_err, object_name, campaign_name, error_number, error_message)
          VALUES (sysdate, 'transpose_table_row2column', v_nazwa_kamp, err_code, err_msg);
          COMMIT;

end transpose_table_row2column;
and I don't know how to create the slider:
cursor first_col_data_header is
       select v_col_name from table_source;
I have error this table does not exist
because table_name is the name of the parameter and v_col_name is variable which I initialize later in the code:
for v_first_column in first_column
loop
  v_col_name := v_first_column.column_name;
end loop;
Thanks for help

Here is the code you are looking for:

create or replace procedure transpose_table_row2column (table_source IN VARCHAR2, table_result IN VARCHAR2) is

-set serveroutput on;

v_nazwa_kamp varchar2 (100);
date of v_czas_start;
date of v_czas_stop;
err_code varchar2 (50);
err_msg varchar2 (2000);

cmd_1_drop varchar2 (50);
cnt_1 pls_integer;
cnt_2 pls_integer;
cnt_3 pls_integer;
cnt_4 pls_integer;
v_col_name varchar2 (50);
test varchar2 (5);

-deklaracja wyjatku dla nieistniejacej lub niedostepnej tabeli
TableDoesNotExist EXCEPTION;
PRAGMA EXCEPTION_INIT (TableDoesNotExist,-942);

-name pierwszej kolumny tabeli zrodlowej
l_first_column varchar2 (32767): = 'SELECT column_name FROM USER_TAB_COLUMNS WHERE TABLE_NAME = upper(:table_source) and column_id = 1';

-z pierwszej kolumny tabeli zrodlowej wartosci
l_first_col_data_header varchar2 (32767).
first_col_data_header sys_refcursor;
l_first_col_data varchar2 (32767).

Start

test: = "true";
v_nazwa_kamp: = 'transpose_table_row2column ';
v_czas_start: = sysdate;

-sprawdzenie czy istnieje image zrodlowa
BEGIN
EXECUTE IMMEDIATE ' SELECT count (*) FROM "| table_source INTO cnt_4;
EXCEPTION
WHEN TableDoesNotExist
THEN
test: = "false";
err_code: = SQLCODE;
err_msg: = substr (SQLERRM, 1, 2000);
INSERT INTO log_errors (campaign_name, time_err, object_name, error_message, error_number)
VALUES (sysdate, 'transpose_table_row2column', v_nazwa_kamp, err_code, err_msg);
COMMIT;

WHEN NO_DATA_FOUND
THEN
test: = "false";
err_code: = SQLCODE;
err_msg: = substr (SQLERRM, 1, 2000);
INSERT INTO log_errors (campaign_name, time_err, object_name, error_message, error_number)
VALUES (sysdate, 'transpose_table_row2column', v_nazwa_kamp, err_code, err_msg);
COMMIT;

WHILE OTHERS
THEN
test: = "false";
err_code: = SQLCODE;
err_msg: = substr (SQLERRM, 1, 2000);
INSERT INTO log_errors (campaign_name, time_err, object_name, error_message, error_number)
VALUES (sysdate, 'transpose_table_row2column', v_nazwa_kamp, err_code, err_msg);
COMMIT;

END;

-jesli istnieje image zrodlowa at przetwarzamy
If test = "true", then

-pobieram nazwe pierwszej kolumny tabeli zrodlowej
run immediately l_first_column in v_col_name using table_source;

-sprawdzenie czy istnieje image docelowa, tak jesli to trzeba usunac
Select count (*) in the user_tables cnt_1 t
where t.table_name = upper (table_result);

-jesli istnieje image docelowa at usuwamy
If cnt_1 > 0 then
cmd_1_drop: = 'DROP TABLE ' | table_result;
immediately run cmd_1_drop;
end if;

-pobranie liczby wierszy tabeli zrodlowej - nalezy stworzyc tyle samo kolumn tabeli w docelowej
-czy sprawdzenie ponizej w pierwszej kolumnie zrodlowej his unikalne wartosci tabeli - jesli nie to nie mozna
-transponowac tabeli poniewaz musi ona IMCs you wartosci tabeli nowej naglowki jako I musza wystepowac a tylko 1 raz
run immediately "select count (' |)" v_col_name | ') de ' || table_source in cnt_2;
run immediately "select count (distinct ' |)" v_col_name | ') de ' || table_source in cnt_3;

-jesli wartosci w 1 kolumnie his unikalne to przetwarzamy dalej
If cnt_2 = cnt_3 then

-tutaj rozpoczynamy tabeli zrodlowej odczytywanie I create nowej przetransponowanej tabeli
l_first_col_data_header: = 'choose ' | v_col_name | 'from ' | table_source;
Open the first_col_data_header for l_first_col_data_header;
loop
extract the first_col_data_header in l_first_col_data;
When the output first_col_data_header % notfound;
DBMS_OUTPUT. Put_line (': ' | l_first_col_data);
end loop;

v_czas_stop: = sysdate;

insert into log_campaigns (campaign_name time_start time_stop, records_count, time_diff_min)
values (v_nazwa_kamp, v_czas_start, v_czas_stop, cnt_2, round ((v_czas_stop-v_czas_start) * 24 * 60, 2));
commit;

end if;
end if;

EXCEPTION
WHILE OTHERS THEN
err_code: = SQLCODE;
err_msg: = substr (SQLERRM, 1, 2000);

INSERT INTO log_errors (campaign_name, time_err, object_name, error_message, error_number)

VALUES (sysdate, 'transpose_table_row2column', v_nazwa_kamp, err_code, err_msg);
COMMIT;

end transpose_table_row2column;

Tags: Database

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