IsFieldNullOK Method

Applies To

OValue

Description

This method returns TRUE if the field can accept NULL values.

Usage

oboolean IsFieldNullOK(int index) const

oboolean IsFieldNullOK(const char *fieldname) const

Arguments	Description
index	The 0-based index of the field. The index is the position of the field in the SQL query that created the current record set.
fieldname	The name of the field, as expressed in the SQL query.

Remarks

NULL is a possible value for Oracle database fields. This database NULL is different from a C++ NULL. Database NULLs mean "no value set". Some fields are not allowed to contain NULLS. This routine tells you whether the indicated field is allowed to have NULL values.

Return Value

TRUE if the field can contain NULLs; FALSE otherwise.