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| |
| # ST_AsEWKB |
| |
| Introduction: Return the Extended Well-Known Binary representation of a geometry. |
| EWKB is an extended version of WKB which includes the SRID of the geometry. |
| The format originated in PostGIS but is supported by many GIS tools. |
| If the geometry is lacking SRID a WKB format is produced. |
| [See ST_SetSRID](../Spatial-Reference-System/ST_SetSRID.md) |
| It will ignore the M coordinate if present. |
| |
| Format: `ST_AsEWKB (A: Geometry)` |
| |
| Return type: `Binary` |
| |
| Since: `v1.1.1` |
| |
| SQL Example |
| |
| ```sql |
| SELECT ST_AsEWKB(ST_SetSrid(ST_GeomFromWKT('POINT (1 1)'), 3021)) |
| ``` |
| |
| Output: |
| |
| ``` |
| 0101000020cd0b0000000000000000f03f000000000000f03f |
| ``` |
