67.6. Limitations
Prev | Up | Chapter 67. GIN Indexes | Home | Next

## 67.6. Limitations

GIN assumes that indexable operators are strict. This means that `extractValue` will not be called at all on a null item value (instead, a placeholder index entry is created automatically), and `extractQuery` will not be called on a null query value either (instead, the query is presumed to be unsatisfiable). Note however that null key values contained within a non-null composite item or query value are supported.

Prev | Up | Next
67.5. GIN Tips and Tricks | Home | 67.7. Examples