A NUMERIC field cannot contain a non-numeric value such as "NONE". In Oracle, NULL represents the absence of value for all data types. You can assign NULL to any nullable receiving field in Oracle. To assign "NONE" to a field to represent the absence of a value is poor form in the Oracle world...there are many reasons NOT to use "NONE" and many reason to use NULL. Oracle has a full range of operators to deal with evaluating and manipulating NULLS; evaluating the expression value, "NONE", is inefficient compared to counterpart evaluations and manipulations of NULL.
Mufasa
(aka Dave of Sandy, Utah, USA)
[I provide low-cost, remote Database Administration services: www.dasages.com]
Okay, so you have the ability to store "NONE" in "cc_ctr", but that still doesn't make it good form. All of the principles I mentioned in my previous reply still apply.
Mufasa
(aka Dave of Sandy, Utah, USA)
[I provide low-cost, remote Database Administration services: www.dasages.com]
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