When linked server query uses WHERE clause with "text column equal to string literal", the following error is returned:
"The data types ntext and varchar are incompatible in the equal to operator".
Example: select * from PG...varchartst WHERE ntxt = 'ntxt1'
Solution 1. Cast column to nvarchar(max): select * from PG...varchartst WHERE CAST(ntxt as nvarchar(max)) = 'ntxt1'.
Solution 2. Use LIKE operator without wildcard: select * from PG...varchartst WHERE ntxt LIKE 'ntxt1'
