convert the varchar2 data type to the data number type
How to convert the varchar2 data type to the data type number.It looks like my data
create table one)
col1 varchar2 (50)
col2 varchar2 (500);
Insert in a (col1, col2) values ('1234 ', ' 2345');
Select Column1 of number (19)) cast (to_number (col1);
IAM getting error invalid number
I need to create a table with the same columns with data like number types (19)
can someone help me
Thank you
You have changed your original post, so now I see that you get the invalid number.
This is why you should always avoid the varchar columns to store numbers or dates...
Since your table source contains a nonnumeric value, you can write a pl/sql to convert data and see what records are false:
SQL> insert into a (col1,col2) values ('xxxx','2345');
1 row created.
SQL> select * from a;
COL1 COL2
-------- --------
1234 2345
xxxx 2345
2 rows selected.
SQL> create table b (col1 number(19), col2 number(19));
Table created.
SQL> set serverout on
SQL> declare
2 cursor c is
3 select * from a;
4 begin
5 for r in c loop
6 begin
7 insert into b values (to_number(r.col1), to_number(r.col2));
8 exception
9 when invalid_number then
10 dbms_output.put_line('Row rejected: col1='||r.col1||' col2='||r.col2);
11 end;
12 end loop;
13 end;
14 /
Row rejected: col1=xxxx col2=2345
PL/SQL procedure successfully completed.
SQL> select * from b;
COL1 COL2
---------- ----------
1234 2345
1 row selected.
Max
Published by: Massimo Ruocchio, June 14, 2011 20:00
Added the first query in the example
Tags: Database
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