Oracle Error Message
ORA-18170: FTST0011 FTWindow and FTDistance restriction
Reason for the Error
An implementation may restrict the use of FTWindow and FTDistance to an FTOr that is either a single FTWords or a combination of FTWords involving only the operators && and ||. If it a static error if, during the static analysis phase, an expression is found that violates this restriction and the implementation enforces this restriction.
Solution
Follow FTWindow and FTDistance restriction.
