PL/SQL 中使用DDL

由於PL/SQL中不可以直接嵌入DDL。如果要嵌的話。則可以是用動態SQL 如下：

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declare
v_name varchar2(30);
begin
for rec in (select TNAME from tab)
loop
IF rec.tname like 'BB%' THEN
dbms_output.put_line(rec.tname);
v_name := 'drop table ' || rec.tname;
execute immediate v_name;
END IF;
END LOOP;
end;
/

create or replace procedure proc_tmp is
dynamic_sql varchar2(100);
begin
dynamic_sql := 'CREATE TABLE t_tmp(a VARCHAR2(24),b VARCHAR2(24))';
EXECUTE IMMEDIATE dynamic_sql;
end;