Enum Sql.IsNullableType
- Namespace
- LinqToDB
- Assembly
- linq2db.dll
Provides information when function or expression could return null.
public enum Sql.IsNullableType
- Extension Methods
Fields
IfAllParametersNullable = 8
IfAnyParameterNullable = 3
Expression could return NULL if at least one parameter of expression could contain NULL.
NotNullable = 2
Expression never returns NULL.
Nullable = 1
Expression could always return NULL.
SameAsFirstParameter = 4
Expression could return NULL if first parameter of expression could contain NULL.
SameAsLastParameter = 7
Expression could return NULL if last parameter of expression could contain NULL.
SameAsSecondParameter = 5
Expression could return NULL if second parameter of expression could contain NULL.
SameAsThirdParameter = 6
Expression could return NULL if third parameter of expression could contain NULL.
Undefined = 0
Nullability not specified, and other sources (like CanBeNull or return type) will be used to identify nullability.