Dynamically Identify Table (Table Identified by Variable) - sql

Question

I'm trying to create a procedure that will allow me to write an existing row to another table dynamically but the row declaration and insert-statement in the following snippet don't work. The error message indicates that the view hasn't been identified although outputting the target_table.table_name works just fine.
More will be added to the block later on - such as a column with the operation (e.g. INSERT or UPDATE). This is just a simple example and the last procedure (pass_reference) is used to trigger the procedure.
Any help would be much appreciated.
CREATE OR REPLACE PROCEDURE denormalize (new_cursor sys_refcursor, target_table_name varchar)
IS
target_table user_tables%rowtype;
sql_target_table varchar(200) := 'select * from user_tables where table_name = :target_table_name';
row target_table%rowtype;
BEGIN
execute immediate sql_target_table into target_table using target_table_name;
LOOP
fetch new_cursor into row;
exit when new_cursor%notfound;
insert into target_table values row;
commit;
END LOOP;
END denormalize;
/
CREATE OR REPLACE PROCEDURE pass_reference
AS
new_cursor sys_refcursor;
BEGIN
open new_cursor for select * from sales where sales_id=1;
denormalize(new_cursor, 'NEW_SALES');
END;
/

Answer 1

please check this code, it's not working only as for example, as you see for working columns in your cursor should be named as columns in destination table.
I take this code from package that create html table in mail base on view, hope you found this example useful
good luck
declare
in_view_name varchar2(30);
in_table_name varchar2(30) := 'your_new_table';
out_rc number;
out_rc_txt varchar2(1000);
l_cursor number;
l_sql varchar2(50) := 'select * from ' || in_view_name;
l_col_cnt binary_integer;
l_col_tab dbms_sql.desc_tab;
l_column_value varchar2(4000);
l_is_empty boolean := true;
l_insert_header varchar2(1000);
l_insert varchar2(32000);
begin
out_rc := 0;
out_rc_txt := 'OK';
l_cursor := dbms_sql.open_cursor;
dbms_sql.parse(l_cursor, l_sql, dbms_sql.native);
l_col_cnt := dbms_sql.execute(l_cursor);
dbms_sql.describe_columns(l_cursor, l_col_cnt, l_col_tab);
l_insert_header := 'insert into '||in_table_name||'(';
if l_col_cnt > 0 then
-- header
for i in l_col_tab.first .. l_col_tab.last loop
dbms_lob.append(l_insert_header, l_col_tab(i).col_name);
if i != l_col_tab.last then
dbms_lob.append(l_insert_header, ',');
end if;
dbms_sql.define_column(l_cursor, i, l_column_value, 4000);
end loop;
l_insert_header := l_insert_header || ') values(';
-- data
while dbms_sql.fetch_rows(l_cursor) > 0 loop
l_is_empty := false;
l_insert := l_insert_header;
for i in l_col_tab.first .. l_col_tab.last loop
dbms_sql.column_value(l_cursor, i, l_column_value);
l_insert := l_insert || '''' || l_column_value || ''','
if not in_attachment then
dbms_lob.append(out_table, l_td);
end if;
if (not in_attachment) or (l_column_value is not null) then
dbms_lob.append(out_table, nvl(l_column_value, l_nbsp));
end if;
if (not in_attachment) or (i != l_col_tab.last) then
dbms_lob.append(out_table, l_tdc);
end if;
end loop;
l_insert := substr(l_insert, 1, length(l_insert) - 1) || ')';
execute immediate l_insert;
end loop;
end if;
dbms_sql.close_cursor(l_cursor);
end;