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| |
| # ST_LineMerge |
| |
| Introduction: Returns a LineString or MultiLineString formed by sewing together the constituent line work of a MULTILINESTRING. |
| |
| !!!note |
| Only works for MULTILINESTRING. Using other geometry will return a GEOMETRYCOLLECTION EMPTY. If no merging can be performed, the original MULTILINESTRING is returned. |
| |
|  |
| |
| Format: `ST_LineMerge (A: Geometry)` |
| |
| Return type: `Geometry` |
| |
| Since: `v1.0.0` |
| |
| SQL Example |
| |
| ```sql |
| SELECT ST_LineMerge(ST_GeomFromWKT('MULTILINESTRING ((-29 -27, -30 -29.7, -45 -33), (-45 -33, -46 -32))')) |
| ``` |
| |
| Output: |
| |
| ``` |
| LINESTRING (-29 -27, -30 -29.7, -45 -33, -46 -32) |
| ``` |
