| `index_type` | The type of indexing method to query the collection. Please refer to [Index Types](https://www.milvus.io/docs/reference/index.md) for detailed introduction of supported indexes. The default is "FLAT". | No |
| `params` | The extra params of indexing method to query the collection. Please refer to `Index params`(see below) for detailed introduction of supported indexes. | No |
| `params` | The extra params of indexing method to query the collection. Please refer to [Index and search parameters](#Index-and-search-parameters) for detailed introduction of supported indexes. | No |
##### Query Parameters
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@@ -1122,7 +1122,7 @@ $ curl -X GET "http://127.0.0.1:19121/collections/test_collection/segments/15837
| `tags` | Tags of partitions that you need to search. You do not have to specify this value if the collection is not partitioned or you wish to search the whole collection. | No |
| `file_ids` | IDs of the vector files. You do not have to specify this value if you do not use Milvus in distributed scenarios. Also, if you assign a value to `file_ids`, the value of `tags` is ignored. | No |
| `vectors` | Vectors to query. | Yes |
| `params` | Extra params for search. Please refer to `Search param`(see below) to get more detail information. | Yes |
| `params` | Extra params for search. Please refer to [Index and search parameters](#Index-and-search-parameters) to get more detail information. | Yes |
> Note: Type of items of vectors depends on the metric used by the collection. If the collection uses `L2` or `IP`, you must use `float`. If the collection uses `HAMMING`, `JACCARD`, or `TANIMOTO`, you must use `uint8`.
