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Syntax Error, Operator Expected

Tag: sql-server,prolog

I am trying to query the MS SQL Server database using Prolog.

Prolog Code

lemmas:-
        odbc_query('my_db',
                   'SELECT * ,case 
                   when ActualCost<EstimatedCost then 'true'
                   else 'false' 
                   end as Value
                   from Work_Order '
                   ).

It gives an error that operator is expected after 'true' .

Note: The Query works in SQL-Server but it doesn't work in Prolog

Best How To :

Try:

lemmas:-
        odbc_query('my_db',
                   'SELECT * ,case                             \
                   when ActualCost<EstimatedCost then \'true\' \
                   else \'false\'                              \   
                   end as Value                                \
                   from Work_Order '
                   ).

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