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Merge pull request #41481 from ClickHouse/alexey-milovidov-patch-5

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Update geo.md
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Alexey Milovidov 2022-09-19 09:34:24 +03:00 committed by GitHub
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docs/en/sql-reference/data-types/geo.md
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@ -7,13 +7,8 @@ title: "Geo Data Types"
ClickHouse supports data types for representing geographical objects — locations, lands, etc.
:::warning
Currently geo data types are an experimental feature. To work with them you must set `allow_experimental_geo_types = 1`.
:::
**See Also**
- [Representing simple geographical features](https://en.wikipedia.org/wiki/GeoJSON).
- [allow_experimental_geo_types](../../operations/settings/settings.md#allow-experimental-geo-types) setting.
## Point
@ -24,7 +19,6 @@ Currently geo data types are an experimental feature. To work with them you must
Query:
```sql
SET allow_experimental_geo_types = 1;
CREATE TABLE geo_point (p Point) ENGINE = Memory();
INSERT INTO geo_point VALUES((10, 10));
SELECT p, toTypeName(p) FROM geo_point;
@ -46,7 +40,6 @@ Result:
Query:
```sql
SET allow_experimental_geo_types = 1;
CREATE TABLE geo_ring (r Ring) ENGINE = Memory();
INSERT INTO geo_ring VALUES([(0, 0), (10, 0), (10, 10), (0, 10)]);
SELECT r, toTypeName(r) FROM geo_ring;
@ -68,7 +61,6 @@ Result:
This is a polygon with one hole:
```sql
SET allow_experimental_geo_types = 1;
CREATE TABLE geo_polygon (pg Polygon) ENGINE = Memory();
INSERT INTO geo_polygon VALUES([[(20, 20), (50, 20), (50, 50), (20, 50)], [(30, 30), (50, 50), (50, 30)]]);
SELECT pg, toTypeName(pg) FROM geo_polygon;
@ -91,7 +83,6 @@ Result:
This multipolygon consists of two separate polygons — the first one without holes, and the second with one hole:
```sql
SET allow_experimental_geo_types = 1;
CREATE TABLE geo_multipolygon (mpg MultiPolygon) ENGINE = Memory();
INSERT INTO geo_multipolygon VALUES([[[(0, 0), (10, 0), (10, 10), (0, 10)]], [[(20, 20), (50, 20), (50, 50), (20, 50)],[(30, 30), (50, 50), (50, 30)]]]);
SELECT mpg, toTypeName(mpg) FROM geo_multipolygon;