518 Attempted to prepare an empty query.

Problem: Getting error "Attempted to prepare an empty query"

When executing a query in ObjectPAL.
Versions: P7 and later
Possible cause:

• Length of tablename including full path is greater than 64-66 characters.
  
• Name of the folder or table contains characters disliked by Paradox, eg an underscore in the tablename
  
• Check to see if the query has any checkmarked fields. If no fields are checkmarked, check one of them. Obviously, some queries do not require checkmarks (such as CHANGETO, DELETE, INSERT, etc.). If this is the case, look elsewhere for the solution.
  

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