except method
Appends the other statement as a EXCEPT clause after this query.
The database will run both queries and return all rows of the first query
that were not returned by other. For this to work, this and other must
have compatible columns.
The other query must not include a LIMIT or a ORDER BY clause.
Compound statements can only contain a single LIMIT and ORDER BY
clause at the end, which is set on the first statement (on which
except is called). Also, the other statement must not contain
compound parts on its own.
Implementation
void except(BaseSelectStatement other) {
_addCompound(_CompoundOperator.except, other);
}