Table does not exist error

Question

create table dytab(x number);
    create or replace procedure p_testdytab(p_tab in varchar2)
    is
    begin
    execute immediate ' create table dytab2 as select x from p_tab';
    end p_testdytab;
    begin
    p_testdytab('dytab');
    end;
    /why the procedure is not replacing parameter p_tab with the table name ? I get table does not exist error

Answer 1

Hi,
user650888 wrote:
create table dytab(x number);
create or replace procedure p_testdytab(p_tab in varchar2)
is
begin
execute immediate ' create table dytab2 as select x from p_tab';
end p_testdytab;
begin
p_testdytab('dytab');
end;
/why the procedure is not replacing parameter p_tab with the table name ? I get table does not exist errorAnything inside single-quotes is literally what is written. In this case, p_tab is inside single-quotes, so p_tab doesn't stand for some other value, such as 'dytab'; it literally means p_tab,
If you really must use EXECUTE IMMEDIATE, then don't put the variable name inside the single-quotes.
dynamic_txt := 'create table dytab2 as select x from ' || p_tab;
dbms_output.put_line (dynamic_txt || ' = dynamic_txt');
EXECUTE IMMEDIATE dynamic_txt;Whenever you write dynamic SQL, display it before executing it, at least during testing. That way, you can see exactly what is being executed, which is a huge help when it causes an error.
As Tubby said, creating tables in PL/SQL is usually a very bad idea. Whatever you need to do, Oracle probably has a simpler, more robust way to do it. Say what your business requirements are, and someone will help you find a good way to do what you need.