Given a DbType type code, determine an appropriate null value to use in a select clause.

Namespace: NHibernate.Dialect
Assembly: NHibernate (in NHibernate.dll) Version: 3.2.0.4000 (3.2.0.4000)

Syntax

C#
public virtual string GetSelectClauseNullString(
	SqlType sqlType
)
Visual Basic
Public Overridable Function GetSelectClauseNullString ( _
	sqlType As SqlType _
) As String
Visual C++
public:
virtual String^ GetSelectClauseNullString(
	SqlType^ sqlType
)

Parameters

sqlType
Type: NHibernate.SqlTypes..::..SqlType
The DbType type code.

Return Value

The appropriate select clause value fragment.

Remarks

One thing to consider here is that certain databases might require proper casting for the nulls here since the select here will be part of a UNION/UNION ALL.

See Also