AllowNullsEnum
Specifies whether records with null values are indexed.
Constant | Value | Description |
---|---|---|
adIndexNullsAllow | 0 | The index does allow entries in which the key columns are null. If a null value is entered in a key column, the entry is inserted into the index. |
adIndexNullsDisallow | 1 | Default. The index does not allow entries in which the key columns are null. If a null value is entered in a key column, an error will occur. |
adIndexNullsIgnore | 2 | The index does not insert entries containing null keys. If a null value is entered in a key column, the entry is ignored and no error occurs. |
adIndexNullsIgnoreAny | 4 | The index does not insert entries where some key column has a null value. For an index having a multi-column key, if a null value is entered in some column, the entry is ignored and no error occurs. |
Applies To
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