Perimeter
PERIMETER(g Geometry)
Alias: ST_PERIMETER
Returns the length of the perimeter of g.
Result type: float
Example:
SELECT PERIMETER(POLYFROMTEXT('POLYGON((0 0, 0 20, 15 20, 15 16, 10 16, 10 14, 15 14, 15 0, 0 0))'));
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col1
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80.000
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