public String getSelectTaskFromLookupTableStatement() {
        return QueryBuilder.select(WORKFLOW_ID_KEY)
                .from(keyspace, TABLE_TASK_LOOKUP)
                .where(eq(TASK_ID_KEY, bindMarker()))
                .getQueryString();
    }
@return cql query statement to retrieve the workflow_id for a particular task_id from the
    "task_lookup" table
cassandra-persistence/src/main/java/com/netflix/conductor/cassandra/util/Statements.java