// GroupBy group by clause
type GroupBy struct {
	Columns []Column
	Having  []Expression
}

// Name from clause name
func (groupBy GroupBy) Name() string {
	return "GROUP BY"
}

// Build build group by clause
func (groupBy GroupBy) Build(builder Builder) {
	for idx, column := range groupBy.Columns {
		if idx > 0 {
			builder.WriteByte(',')
		}

		builder.WriteQuoted(column)
	}

	if len(groupBy.Having) > 0 {

		t.Errorf("name should be groupby, but got %v, total should be 60, but got %v", name, total)
	}

	if err := DB.Model(&User{}).Select("name, sum(age)").Where("name = ?", "groupby").Group("users.name").Row().Scan(&name, &total); err != nil {
		t.Errorf("no error should happen, but got %v", err)
	}

	if name != "groupby" || total != 60 {

            .groupBy { "${it.major}.${it.minor}" }
            .map { (_, v) -> v.maxOrNull()!!.format() }

        // Limit to first and last release of each major version
        mainTestedVersions = testedVersions.map { VersionNumber.parse(it.gradleVersion().version) }
            .groupBy { it.major }
            .map { (_, v) -> listOf(v.maxOrNull()!!.format()) }.flatten()

	}{
		{
			[]clause.Interface{clause.Select{}, clause.From{}, clause.GroupBy{
				Columns: []clause.Column{{Name: "role"}},
				Having:  []clause.Expression{clause.Eq{"role", "admin"}},
			}},
			"SELECT * FROM `users` GROUP BY `role` HAVING `role` = ?",
			[]interface{}{"admin"},
		},
		{
			[]clause.Interface{clause.Select{}, clause.From{}, clause.GroupBy{
				Columns: []clause.Column{{Name: "role"}},

            val testId = scenarioObj["testId"] as String
            val groups =
                (scenarioObj["groups"] as List<Map<String, Any>>).map { groupObj ->
                    val testProject = groupObj["testProject"] as String
                    val coverage =
                        (groupObj["coverage"] as Map<String, List<String>>)
                            .map { (key, value) ->

                "Minimum supported '$minimumSupported' was not found in available versions: $allVersions"
            }
            val versionsByMinor = allVersions
                .groupBy { it.take(3) } // e.g. 1.9
                .toSortedMap()
            val latests = buildList {
                versionsByMinor.entries.forEachIndexed { idx, entry ->

			}},
			clause.Where{Exprs: []clause.Expression{
				clause.Or(clause.Gt{Column: "score", Value: 100}, clause.Like{Column: "name", Value: "%linus%"}),
			}},
			clause.GroupBy{Columns: []clause.Column{{Name: "role"}}, Having: []clause.Expression{clause.Eq{"role", "admin"}}},
			clause.Limit{Limit: &limit10, Offset: 20},

            val allMinorLatests = allVersions.map { version ->
                VersionNumber.parse(version)
            }.sorted().groupBy { version ->
                VersionNumber.version(version.major, version.minor)
            }.map { (_, versions) ->
                versions.last()
            }

                functionalTests
                    .filter {
                        largeSubProjectRegex.containsMatchIn(
                            it.name,
                        )
                    }.groupBy { it.getSubProjectSplitName().substringBefore('_') }
            functionalTestsWithSplit.forEach {
                assertAllSplitsArePresent(it.key, it.value)
                assertCorrectParameters(it.key, it.value)

	return
}

// Group specify the group method on the find
//
//	// Select the sum age of users with given names
//	db.Model(&User{}).Select("name, sum(age) as total").Group("name").Find(&results)
func (db *DB) Group(name string) (tx *DB) {
	tx = db.getInstance()

	fields := strings.FieldsFunc(name, utils.IsInvalidDBNameChar)
	tx.Statement.AddClause(clause.GroupBy{