Help to make this dynamic sql work

Question

Hi,
I have many DDLs to execute and these DDLs change over time, so I try to load these DDLs into a table (y) and write a proc to loop through them. But I run into some problems and need your help.
Here are the details:
create table y ( x varchar2(4000));
CREATE TABLE error_log (
error_log_ID NUMBER(20),
statement VARCHAR2(2000),
error_msg VARCHAR2(400),
Action VARCHAR2(16)
CREATE SEQUENCE SEQ_error_log
START WITH 1
INCREMENT BY 1
NOMINVALUE
NOMAXVALUE
NOCYCLE
CACHE 20
NOORDER
CREATE OR REPLACE PROCEDURE CUST_UPDATE1 (
schema_name IN VARCHAR2 ,
table_tablespcae_name IN VARCHAR2,
index_tablespcae_name IN VARCHAR2
) AS
v_code NUMBER;
v_errm VARCHAR2(400);
sql_stmt1 VARCHAR2(3000) ;
CURSOR c1 IS SELECT x FROM y;
BEGIN
FOR i IN c1 LOOP
sql_stmt1 := i.x;
DBMS_OUTPUT.PUT_LINE ( 'x = '|| sql_stmt1 );
/ **************************** worked if use this hard coded ********************************
sql_stmt1 := 'CREATE TABLE '||schema_name||'.zz
aa VARCHAR2(4) NOT NULL,
bb VARCHAR2(100) NOT NULL,
cc VARCHAR2(2) NOT NULL
TABLESPACE '|| table_tablespcae_name;
BEGIN
EXECUTE IMMEDIATE sql_stmt1;
EXCEPTION
WHEN OTHERS THEN
v_code := SQLCODE;
v_errm := SUBSTR(SQLERRM, 1 , 400);
INSERT INTO error_log VALUES ( SEQ_error_log.nextval, sql_stmt1, v_errm, DECODE(v_code, -1430, 'IGNORE', 'CHECK') );
END;
END LOOP;
END;
Test:
exec cust_update1('SCOTT', 'USERS', 'c'); -- didn't use last parameter
Senario 1. insert into y values (
'CREATE TABLE schema_name.zz
aa VARCHAR2(4) NOT NULL,
bb VARCHAR2(100) NOT NULL,
cc VARCHAR2(2) NOT NULL
TABLESPACE table_tablespcae_name ' );
===> error_log show: ORA-01918: user 'SCHEMA_NAME' does not exist
Senario 2. insert into y values (
'''CREATE TABLE ''||schema_name||''.zz
aa VARCHAR2(4) NOT NULL,
bb VARCHAR2(100) NOT NULL,
cc VARCHAR2(2) NOT NULL
TABLESPACE ''|| table_tablespcae_name' );
==> error_log show: ORA-00900: invalid SQL statement
3. I hard coded the exact dynamic from step 2 and assigned to sql_stmt1, ( as commeted out in my code) it WORKED.
Thanks
George

Answer 1

hi,
do the scenario1 but you have to substitute the schema_name and table_space name with your actual string before calling the dynamic sql.
ei.
sql_stmt1 := replace(sql_stmt1,'schema_name',schema_name);
sql_stmt1 := replace(sql_stmt1,'table_tablespcae_name',table_tablespcae_name);
BEGIN
EXECUTE IMMEDIATE sql_stmt1;
EXCEPTION
WHEN OTHERS THEN
v_code := SQLCODE;
v_errm := SUBSTR(SQLERRM, 1 , 400);
INSERT INTO error_log VALUES ( SEQ_error_log.nextval, sql_stmt1, v_errm, DECODE(v_code, -1430, 'IGNORE', 'CHECK') );
END;
Cheers,
J