Khắc phục lỗi Could not fetch object from current row, agrument Area trong MapInfo

1. Issue
User performing and Table tab>Edit>Update Column procedure with the area of a mappable table of regions results in an error:



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MapInfo
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1: Could not fetch object from the current row, argument Area.
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OK
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2. Cause
This error is caused when MapInfo Pro tries to update a mappable table using the "Area" function but there are 1 or more records that have no object associated with it.

3. Resolution

UPDATED: March 23, 2017


One way to resolve this issue is to first query the table for those records that do have map objects associated like this:


Then run the Table>Edit>Update column procedure on the resultant query from above.


Now only those records with map objects are updated with Area information without error.

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