Merge branch 'main' into omt-support

README.md

@@ -313,12 +313,12 @@ curl localhost:3000/points,lines/0/0/0
 
 Function Source is a database function which can be used to query [vector tiles](https://github.com/mapbox/vector-tile-spec). When started, martin will look for the functions with a suitable signature. A function that takes `z integer` (or `zoom integer`), `x integer`, `y integer`, and an optional `query json` and returns `bytea`, can be used as a Function Source. Alternatively the function could return a record with a single `bytea` field, or a record with two fields of types `bytea` and `text`, where the `text` field is a etag key (i.e. md5 hash).  
 
-| Argument                   | Type    | Description             |
-|----------------------------|---------|-------------------------|
-| z (or zoom)                | integer | Tile zoom parameter     |
-| x                          | integer | Tile x parameter        |
-| y                          | integer | Tile y parameter        |
-| query (optional, any name) | json    | Query string parameters |
+| Argument                | Type    | Description             |
+|-------------------------|---------|-------------------------|
+| z (or zoom)             | integer | Tile zoom parameter     |
+| x                       | integer | Tile x parameter        |
+| y                       | integer | Tile y parameter        |
+| `<any name>` (optional) | json    | Query string parameters |
 
 For example, if you have a table `table_source` in WGS84 (`4326` SRID), then you can use this function as a Function Source:
 
@@ -339,23 +339,6 @@ END
 $$ LANGUAGE plpgsql IMMUTABLE STRICT PARALLEL SAFE;
 ```
 
-```sql, ignore
-CREATE OR REPLACE FUNCTION function_zxy_query(z integer, x integer, y integer, query_params json) RETURNS bytea AS $$
-DECLARE
-  mvt bytea;
-BEGIN
-  SELECT INTO mvt ST_AsMVT(tile, 'function_zxy_query', 4096, 'geom') FROM (
-    SELECT
-      ST_AsMVTGeom(ST_Transform(ST_CurveToLine(geom), 3857), ST_TileEnvelope(z, x, y), 4096, 64, true) AS geom
-    FROM table_source
-    WHERE geom && ST_Transform(ST_TileEnvelope(z, x, y), 4326)
-  ) as tile WHERE geom IS NOT NULL;
-
-  RETURN mvt;
-END
-$$ LANGUAGE plpgsql IMMUTABLE STRICT PARALLEL SAFE;
-```
-
 The `query_params` argument is a JSON representation of the tile request query params. For example, if user requested a tile with [urlencoded](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/encodeURIComponent) params:
 
 ```shell