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CTField::GetNullFlag
Syntax
CTBOOL GetNullFlag( ) const
Parameters
This method has no parameters.
Description
Retrieves the field null flag.
The c-treeDB null flag controls the NOT NULL property of a column. Setting this column has no effect on individual record null values: it is NOT enforced at the c-treeDB layer. This attribute only applies to the FairCom DB SQL layer for constraint on values. It is useful to set this flag in c-tree data files before SQL import such that the property is maintained.
Return
GetNullFlag() returns the field null flag setting.
See also
SetNullFlag()
