@SuppressWarnings("unchecked")
    public SelfT use(String database) {
        checkSealed();
        option(ClickHouseClientOption.DATABASE, database);
        return (SelfT) this;
    }
Changes current database.

@param database database name, {@code null} means reset to default
@return the request itself
clickhouse-client/src/main/java/com/clickhouse/client/ClickHouseRequest.java