.. _cql: CQL support =========== Limitations ----------- The support to CQL is limited to `Simple CQL filter `_ and thus it allows to query with the following predicates: * comparison predicates * spatial predicates * temporal predicates Formats ------- At the moment pygeoapi supports only the CQL dialect with the JSON encoding `CQL-JSON `_. Providers --------- As of now the available providers supported for CQL filtering are limited to only :ref:`Elasticsearch `. Queries ^^^^^^^ The following type of queries are supported right now: * ``between`` predicate query * Logical ``and`` query with ``between`` and ``eq`` expression * Spatial query with ``bbox`` Examples ^^^^^^^^ A ``between`` example for a specific property through an HTTP POST request: .. code-block:: bash curl --location --request POST 'http://localhost:5000/collections/nhsl_hazard_threat_all_indicators_s_bc/items?f=json&limit=50&filter-lang=cql-json' \ --header 'Content-Type: application/query-cql-json' \ --data-raw '{ "between": { "value": { "property": "properties.MHn_Intensity" }, "lower": 0.59, "upper": 0.60 } }'