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[1.11.x] Clarified return value of NumGeometries GIS function.

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Backport of 66bbde6819586cc3a75630e12e569dc8ae72f211 from master
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Sergey Fedoseev 2017-03-17 18:03:30 +05:00 committed by Tim Graham
parent 8ac03edd8d
commit 926b4427d2
1 changed files with 3 additions and 1 deletions
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docs/ref/contrib/gis/functions.txt
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@ -397,7 +397,9 @@ Accepts a single geographic field or expression and returns the memory size
Accepts a single geographic field or expression and returns the number of Accepts a single geographic field or expression and returns the number of
geometries if the geometry field is a collection (e.g., a ``GEOMETRYCOLLECTION`` geometries if the geometry field is a collection (e.g., a ``GEOMETRYCOLLECTION``
or ``MULTI*`` field); otherwise returns ``None``. or ``MULTI*`` field). Returns 1 for single geometries.
On MySQL, returns ``None`` for single geometries.
``NumPoints`` ``NumPoints``
============= =============