How do we know that NULL value has been selected for a nullable column

a.Check if equal to NULL
b.Use null indicator, 0 indicates null
c.Use null indicator, -1 indicates null
d.Use null indicator, -2 indicates null
e.None of the above.
Use null indicator, -1 indicates null

Questions by radibioinfo   answers by radibioinfo

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  • Aug 12th, 2014

0:- Not Null
-1:- Null Value
-2:- Null value because of some conversion error


  • Feb 13th, 2015

Place a null indicator variable in front of the host variable for the nullable column in the query, A value of -1 inidcator null value retrieved

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