select dynamic column value from a rowtype variable in pl sql

Question

I need to get the specific column value from rowtype variable. My sample code is

declare
  col_name varchar2(100);
  col_val varchar2(100);
  TYPE column_table_         


        

Answer 1

Table:

create table column_table(column_name varchar2(100), column_value varchar2(100));

You can do this without using bulk collect. Simple FOR loop should suffice.

Query:

declare
    col_name column_table.column_name%type;
    col_val column_table.column_value%type;
begin
    for data_table in (SELECT * FROM COLUMN_TABLE)
    loop
        col_name  := data_table.COLUMN_NAME; 
        col_val := data_table.COLUMN_VALUE;
        dbms_output.put_line(col_name ||' '|| col_val);
    end loop;
end;
/

Query 2:

Using bulk collect:

declare
    col_name column_table.column_name%type;
    col_val column_table.column_value%type;
    type ct_tab is table of column_table%rowtype;
    v_ct ct_tab;
begin
    select * bulk collect into v_ct
    from column_table;

    for i in 1..v_ct.count loop
        col_name := v_ct(i).column_name;
        col_val := v_ct(i).column_value;
        dbms_output.put_line(col_name ||' '|| col_val);
    end loop;
end;
/