@Override
    public ClickHouseNestedValue update(String value) {
        if (value == null) {
            resetToNullOrEmpty();
        } else if (value.isEmpty() || ClickHouseValues.EMPTY_ARRAY_EXPR.equals(value)) {
            resetToDefault();
        } else {
            // TODO parse string
            set(new Object[][] { new String[] { value } });
        }
        return this;
    }
Gets immutable list of nested columns.

@return immutable list of columns
clickhouse-data/src/main/java/com/clickhouse/data/value/ClickHouseNestedValue.java