Insert statement will not work if select statement has less number of colum

Question

Hi,
One of my thread is already resolved on the following URL : unable to insert rows into the table
DROP TABLE TEMP;
CREATE TABLE TEMP AS SELECT * FROM CASE_101 WHERE 1=2;
DECLARE
S VARCHAR2(200);
STMT VARCHAR2(500);
begin
for C in (select TABLE_NAME INTO S from USER_TABLES where TABLE_NAME like 'CASE%' TABLE_NAME NOT like '%OLD' and Num_ROWS > 0 order by TABLE_NAME) loop
STMT := 'INSERT INTO TEMP SELECT * FROM ';
STMT:=STMT || C.TABLE_NAME;
EXECUTE IMMEDIATE STMT;
dbms_output.put_line(c.table_name);
end loop;
end;
i am facing now some different; almost all the tables have same number of columns except in few of tables have some additional columns. As above i am creating a table "TEMP" who has highest column temp(by doing some manual process). The table who has less columns than "TEMP" table : Insert statement will not work. 'INSERT INTO TEMP SELECT * FROM less_columns_table_name'.
Please let me know , how can i execute proper way.
Thanks.
Best Regards
Arshad

Answer 1

user13360241 wrote:
Hi,
One of my thread is already resolved on the following URL : unable to insert rows into the table
DROP TABLE TEMP;
CREATE TABLE TEMP AS SELECT * FROM CASE_101 WHERE 1=2;
DECLARE
S VARCHAR2(200);
STMT VARCHAR2(500);
begin
for C in (select TABLE_NAME INTO S from USER_TABLES where TABLE_NAME like 'CASE%' TABLE_NAME NOT like '%OLD' and Num_ROWS > 0 order by TABLE_NAME) loop
STMT := 'INSERT INTO TEMP SELECT * FROM ';
STMT:=STMT || C.TABLE_NAME;
EXECUTE IMMEDIATE STMT;
dbms_output.put_line(c.table_name);
end loop;
end;
i am facing now some different; almost all the tables have same number of columns except in few of tables have some additional columns. As above i am creating a table "TEMP" who has highest column temp(by doing some manual process). The table who has less columns than "TEMP" table : Insert statement will not work. 'INSERT INTO TEMP SELECT * FROM less_columns_table_name'.
Please let me know , how can i execute proper way.
Thanks.
Best Regards
Arshadmore often than not "TEMP" tables are NOT required & are highly inefficient in Oracle.
Either only specify explicit column in TEMP to get data,
or provide value for "extra" column in TEMP