Small Query help

Question

small query i have data like below ,
Month ProductNo CustomerNo     Units
Jan 9001 1001-09 100
jan 9002 1002-09 200
jan 9003 1003-09 300
jan 9001 ABCCustomer 400
Jan 9002 1004-09 500
for any record - if column - customerNo starts with numeric it has to show like CN_****** other wise the same name.
Result should be
Jan 9001 CN_1001-09 100
jan 9002 CN_1002-09 200
jan 9003 CN_1003-09 300
jan 9001 ABCCustomer 400
Jan 9002     CN_1004-09 500
Can some one help to get the query

Answer 1

Hi,
try this,
SQL>  select *from v$version;
BANNER
Personal Oracle Database 10g Release 10.1.0.2.0 - Production
PL/SQL Release 10.1.0.2.0 - Production
CORE    10.1.0.2.0      Production
TNS for 32-bit Windows: Version 10.1.0.2.0 - Production
NLSRTL Version 10.1.0.2.0 - Production
  1  with t  as
  2  (select 'Jan' Month ,9001 ProductNo, '1001-09' CustomerNo, 100 Units from dual
  3  union all
  4  select 'jan', 9002 ,'1002-09', 200 from dual
  5  union all
  6  select 'jan', 9003, '1003-09', 300 from dual
  7  union all
  8  select 'jan', 9001, 'ABCCustomer', 400 from dual
  9  union all
10  select 'Jan', 9002, '1004-09', 500  from dual)
11  select  Month,ProductNo,(case when regexp_like(customerno,'^[[:digit:]]') then
12   'CN_'||CustomerNo
13  else
14* CustomerNo end)cudtomer_no, units from t
SQL> /
MON  PRODUCTNO CUDTOMER_NO         UNITS
Jan       9001 CN_1001-09            100
jan       9002 CN_1002-09            200
jan       9003 CN_1003-09            300
jan       9001 ABCCustomer           400
Jan       9002 CN_1004-09            500or
regexp_like(customerno,'^[0-9]')or
regexp_like(customerno,'^[0123456789]')Edited by: user291283 on Sep 12, 2009 8:22 AM
Edited by: user291283 on Sep 12, 2009 9:24 AM