PostGIS
Name
ST_LineFromText — Makes a Geometry from WKT representation with the given SRID. If SRID is not given, it defaults to 0.
Synopsis
geometry +`*`+ST_LineFromText*(`text `WKT`)`;
geometry +`*`+ST_LineFromText*(`text `WKT, integer
srid`)`;
Description
Makes a Geometry from WKT with the given SRID. If SRID is not given, it defaults to 0. If WKT passed in is not a LINESTRING, then null is returned.
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This method
implements the OGC Simple
Features Implementation Specification for SQL 1.1. s3.2.6.2
This method
implements the SQL/MM specification. SQL-MM 3: 7.2.8
Examples
SELECT ST_LineFromText('LINESTRING(1 2, 3 4)') AS aline, ST_LineFromText('POINT(1 2)') AS null_return;
aline | null_return
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010200000002000000000000000000F ... | t