p := participle.MustBuild(
		&Select{},
		participle.Lexer(sqlLexer),
		participle.CaseInsensitive("Keyword"),
	)

	s := Select{}
	cases := []string{
		"select * from s3object",
		"select a, b from s3object s",
		"select a, b from s3object as s",
		"select a, b from s3object as s where a = 1",
		"select a, b from s3object s where a = 1",
		"select a, b from s3object where a = 1",
	}

	}

	r = dryDB.Table("gorm.user").Select("name").Find(&User{}).Statement
	if !regexp.MustCompile("SELECT .name. FROM .gorm.\\..user. WHERE .user.\\..deleted_at. IS NULL").MatchString(r.Statement.SQL.String()) {
		t.Errorf("Table with escape character, got %v", r.Statement.SQL.String())
	}

	r = dryDB.Select("name").Find(&UserWithTable{}).Statement

.daterangepicker select.hourselect, .daterangepicker select.minuteselect, .daterangepicker...

    select("tr.severity-$severity").map { tr ->
        tr.select("td")[1]
            .select("span")
            .text()
            .substringBefore(" If you did this intentionally")
    }


private
fun Document.scrapeMessagesForSeverity(severity: String): List<ReportMessage> =

    select("tr.severity-$severity").map { tr ->
        val entry = tr.select("td")[1]

		clauses := []clause.Interface{clause.Select{}, clause.From{}, clause.Where{Exprs: []clause.Expression{clause.Eq{Column: clause.PrimaryColumn, Value: "1"}, clause.Gt{Column: "age", Value: 18}, clause.Or(clause.Neq{Column: "name", Value: "jinzhu"})}}}

		for _, clause := range clauses {
			stmt.AddClause(clause)
		}

		stmt.Build("SELECT", "FROM", "WHERE")
		_ = stmt.SQL.String()
	}
}

	}

	var maxId int64
	userTable := func(db *gorm.DB) *gorm.DB {
		return db.WithContext(context.Background()).Table("users")
	}
	if err := DB.Scopes(userTable).Select("max(id)").Scan(&maxId).Error; err != nil {
		t.Errorf("select max(id)")
	}
}

func TestComplexScopes(t *testing.T) {
	tests := []struct {
		name     string
		queryFn  func(tx *gorm.DB) *gorm.DB
		expected string
	}{
		{

	result := dryDB.Table("users").Select("name").Count(&count)
	if !regexp.MustCompile(`SELECT COUNT\(.name.\) FROM .*users.*`).MatchString(result.Statement.SQL.String()) {
		t.Fatalf("Build count with select, but got %v", result.Statement.SQL.String())
	}

	result = dryDB.Table("users").Distinct("name").Count(&count)

			[]clause.Interface{clause.Select{}, clause.From{}, clause.Where{
				Exprs: []clause.Expression{clause.Or(clause.Neq{Column: "name", Value: "jinzhu"}), clause.Eq{Column: clause.PrimaryColumn, Value: "1"}, clause.Gt{Column: "age", Value: 18}},
			}},
			"SELECT * FROM `users` WHERE `users`.`id` = ? OR `name` <> ? AND `age` > ?",
			[]interface{}{"1", "jinzhu", 18},
		},
		{
			[]clause.Interface{clause.Select{}, clause.From{}, clause.Where{

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

	if name != "groupby" || total != 60 {
		t.Errorf("name should be groupby, but got %v, total should be 60, but got %v", name, total)
	}

# Select API Quickstart Guide [![Slack](https://slack.min.io/slack?type=svg)](https://slack.min.io)

Traditional retrieval of objects is always as whole entities, i.e GetObject for a 5 GiB object, will always return 5 GiB of data. S3 Select API allows us to retrieve a subset of data by using simple SQL expressions. By using Select API to retrieve only the data needed by the application, drastic performance improvements can be achieved.