• Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other Pie Elite all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Campbell Ritchie
  • Jeanne Boyarsky
  • Ron McLeod
  • Paul Clapham
  • Liutauras Vilda
Sheriffs:
  • paul wheaton
  • Rob Spoor
  • Devaka Cooray
Saloon Keepers:
  • Stephan van Hulst
  • Tim Holloway
  • Carey Brown
  • Frits Walraven
  • Tim Moores
Bartenders:
  • Mikalai Zaikin

to_number function question.

 
Ranch Hand
Posts: 70
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
I have a sql query which converts my varchar to a number. Whenever there is a field which contains non numerical values. the query returns an error. Is there some way to return null if the field contains non-numerical data, and a number if the field contains numerical data?

my query: "select to_number(col_1) from tbl_a"
 
author & internet detective
Posts: 41907
909
Eclipse IDE VI Editor Java
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Fritz,
To do that in a non-database specific way, you can use a union:


In some databases, like Oracle, you can use a function for the conditional.
 
reply
    Bookmark Topic Watch Topic
  • New Topic