How to select from a parameter (cursor,varchar2, etc) - oracle

Question

I have a little problem and if you could help me it would be great.
DECLARE
CURSOR cur1 IS
SELECT table_name
FROM all_tab_columns
WHERE column_name LIKE 'DESCRIPTION';
tableName varchar2(100);
BEGIN
OPEN cur1;
LOOP
FETCH cur1 INTO tableName;
EXIT WHEN cur1%NOTFOUND;
dbms_output.put_line(tablename);
END LOOP;
END;
What I need is to get all the information possible from those tables with the condition:
WEHRE DESCRIPTION LIKE 'Transaction%'
Something like this
SELECT *
FROM tableName ---- from above
WEHRE DESCRIPTION LIKE 'Transaction%'
I would like to select all data from the tables in my cursor.
The tables don't have the same structure, one can have 4 coloumns, one can have 10 coloumns.
Can it be done in an anonymous block?
Can anyone help me, please?

Answer 1

Try this:
DECLARE
CURSOR cur1 IS
SELECT table_name
FROM user_tab_columns
WHERE column_name LIKE 'DESCRIPTION';
tableName varchar2(100);
l_description varchar2(100);
l_str_val varchar2(100) := 'Transaction%';
l_cursor sys_refursor;
BEGIN
OPEN cur1;
LOOP
FETCH cur1 INTO tableName;
EXIT WHEN cur1%NOTFOUND;
open l_cursor for 'select DESCRIPTION from ' || tableName || ' where DESCRIPTION like :description' using l_str_val;
loop
fetch l_cursor into l_description;
exit when l_cursor%NOTFOUND;
dbms_output.put_line(tablename || ' ' || l_description);
end loop;
close l_cursor;
END LOOP;
close cur1;
END;
I extracted only description column, because I am sure this column is in the table, if you want to extract more columns you have to rewrite this like:
WHERE column_name = ('DESCRIPTION', 'ID', NAME)
and then:
execute immediate 'select DESCRIPTION, ID, NAME from ' || tableName || ' where DESCRIPTION like :description' into l_description, l_id, l_name using l_str_val;