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Compare address in all records and mark the longest

The command below counts the number of characters in the field named Address and marks the record that has the largest number of characters.
You can apply this command to any field in your database simply by changing the field name.

comFieldName="address"

SELECT MAX(LEN(allt(&comFieldName))) FROM (ALIAS()) INTO ARRAY _longest

LOCATE FOR LEN(allt(&comFieldName))=_longest(1)

REPLACE x WITH "X"

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