>OOPS ...
>Correction: varType(myfield) correctly returns a U when 'myfield' field is non existent.
This is not a reliable check, because you may have variable myField defined...
vartype(MyTable.myField) would generate an error, as Marcia pointed out... So, type('MyTable.myField') is the correct solution if your table is a free table. Otherwise INDBC() function could be used instead.
If it's not broken, fix it until it is.
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