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to_number function question.

Fritz Largosa
Ranch Hand

Joined: Sep 12, 2005
Posts: 70
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"
Jeanne Boyarsky
author & internet detective

Joined: May 26, 2003
Posts: 33111

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.

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subject: to_number function question.
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