t.Errorf("no error should happen, but got %v", err)
	}

	if name != "groupby" || active != true || total != 40 {
		t.Errorf("group by two columns, name %v, age %v, active: %v", name, total, active)
	}

	if DB.Dialector.Name() == "mysql" {

// WriteCSVOpts - encapsulates options for Select CSV output
type WriteCSVOpts struct {
	FieldDelimiter rune
	Quote          rune
	QuoteEscape    rune
	AlwaysQuote    bool
}

// Record - is a type containing columns and their values.
type Record interface {
	Get(name string) (*Value, error)

	// Set a value.
	// Can return a different record type.
	Set(name string, value *Value) (Record, error)

		code:       "ColumnTooLong",
		message:    "The length of a column in the result is greater than maxCharsPerColumn of 1 MB.",
		statusCode: 400,
		cause:      err,
	}
}

func errOverMaxColumn(err error) *s3Error {
	return &s3Error{
		code:       "OverMaxColumn",
		message:    "The number of columns in the result is greater than the maximum allowable number of columns.",
		statusCode: 400,
		cause:      err,
	}
}

   *
   * <p>The views returned by the {@code Table} methods {@link Table#column}, {@link
   * Table#columnKeySet}, and {@link Table#columnMap} have iterators that don't support {@code
   * remove()}. Otherwise, all optional operations are supported. Null row keys, columns keys, and
   * values are not supported.
   *
   * <p>Lookups by row key are often faster than lookups by column key, because the data is stored

            }
        }

        final ExtractData extractData = new ExtractData(textBuilder.toString().trim());

        // Add column metadata
        if (extractColumnMetadata && headers != null) {
            extractData.putValues("columns", headers);
            extractData.putValue("column_count", String.valueOf(headers.length));
        }

        #; tableTargetList = list:{FOO_TABLE ; prefix:FOO_ ; suffix:_FOO ; contain:_FOO_}

        # o columnExceptMap: (NotRequired - Default map:{})
        #  If you want to exclude some columns in generating target,
        #  you should specify the list of excepted column hints.
        #    e.g. map:{HEAVY_MASTER = list:{APP_NOT_USED_ID; suffix:_IMAGE}}
        #  This is only for the main schema. Additional schemas are unconcerned.
        #

    #  Does it check differences of column-def order?
    #  (except added or deleted columns)
    #
    #; isCheckColumnDefOrderDiff = false
    # - - - - - - - - - -/

    # /- - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    # o isCheckDbCommentDiff: (NotRequired - Default false)
    #  Does it check differences of table or column or others comment?
    #
    #; isCheckDbCommentDiff = false

 *
 * <p>The allowed row and column keys must be supplied when the table is created. The table always
 * contains a mapping for every row key / column pair. The value corresponding to a given row and
 * column is null unless another value is provided.
 *
 * <p>The table's size is constant: the product of the number of supplied row keys and the number of

   * @return the corresponding map from column keys to values
   */
  Map<C, V> row(@ParametricNullness R rowKey);

  /**
   * Returns a view of all mappings that have the given column key. For each row key / column key /
   * value mapping in the table with that column key, the returned map associates the row key with
   * the value. If no mappings in the table have the provided column key, an empty map is returned.
   *

 *
 * <p>The allowed row and column keys must be supplied when the table is created. The table always
 * contains a mapping for every row key / column pair. The value corresponding to a given row and
 * column is null unless another value is provided.
 *
 * <p>The table's size is constant: the product of the number of supplied row keys and the number of