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GEOMETRY_COLUMNS
contains a
description of geometry columns, one row for each geometry column
in the database.
Length()
on LineString
and MultiLineString
currently should be called in MySQL as GLength()
Length()
which calculates the length of string values,
and sometimes it's not possible to distinguish whether the function is
called in a textual or spatial context. We need either to solve this
somehow, or decide on another function name.