How to create table from existing 2 table with default value in oracle

Question

I want to create new table from existing 2 table selected column, with new column contain '99999999' like dummy value.

I tried below code

CREATE TABLE NewTbl1
AS 
    SELECT a.col1, a.col2, a.col3, b.col4, b.col5, dummycol= '99999999'
    FROM tbl1 a  tbl2 b 
    WHERE (a.col1 = b.colNum AND a.col2 = b.colnum1) 

But I get an error that FROM keyword is not found. If I remove dummcol='99999999', then it executes properly.

Is it right query or wrong? If wrong please correct me

Answer 1

Use proper join syntax and use the right syntax for aliases:

CREATE TABLE NewTbl1 as 
    SELECT a.col1, a.col2, a.col3, b.col4, b.col5, '99999999' as dummycol
    FROM tbl1 a JOIN
         tbl2 b 
         ON a.col1 = b.colNum AND a.col2 = b.colnum1;

Answer 2

CREATE TABLE NewTbl1
AS 
SELECT a.col1, a.col2, a.col3, b.col4, b.col5, '99999999' as dummycol
FROM tbl1 a, tbl2 b 
WHERE (a.col1 = b.colNum AND a.col2 = b.colnum1)