src/main/java/org/polyjdbc/core/query/SimpleQueryRunner.java
public boolean queryExistence(final SelectQuery query) {
        return runner.run(new TransactionWrapper<Boolean>() {
            public Boolean perform(QueryRunner queryRunner) {
                return queryRunner.queryExistence(query);
            }
        });
    }
public boolean queryExistence(final SelectQuery query) {
        return runner.run(new TransactionWrapper<Boolean>() {
            public Boolean perform(QueryRunner queryRunner) {
                return queryRunner.queryExistence(query);
            }
        });
    }
Check if any result exists for query, uses {@link QueryRunner#queryExistence(org.polyjdbc.core.query.SelectQuery) }.