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15 lines
387 B
MySQL
15 lines
387 B
MySQL
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-- Splits the line at the given point and returns the two parts
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-- in a multilinestring.
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CREATE OR REPLACE FUNCTION split_line_on_node(line GEOMETRY, point GEOMETRY)
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RETURNS GEOMETRY
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AS $$
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DECLARE
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frac FLOAT;
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BEGIN
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frac := ST_Line_Locate_Point(line, point);
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RETURN ST_Collect(ST_Line_Substring(line, 0, frac),
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ST_Line_Substring(line, frac, 1));
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END
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$$
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LANGUAGE plpgsql;
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