package clause

// Interface clause interface
type Interface interface {
	Name() string
	Build(Builder)
	MergeClause(*Clause)
}

// ClauseBuilder clause builder, allows to customize how to build clause
type ClauseBuilder func(Clause, Builder)

type Writer interface {
	WriteByte(byte) error
	WriteString(string) (int, error)
}

// Builder builder interface
type Builder interface {
	Writer
	WriteQuoted(field interface{})

}

// CreateClausesInterface create clauses interface
type CreateClausesInterface interface {
	CreateClauses(*Field) []clause.Interface
}

// QueryClausesInterface query clauses interface
type QueryClausesInterface interface {
	QueryClauses(*Field) []clause.Interface
}

// UpdateClausesInterface update clauses interface
type UpdateClausesInterface interface {
	UpdateClauses(*Field) []clause.Interface
}

			break
		}
		queryDB = tx.Clauses(clause.Gt{Column: clause.Column{Table: clause.CurrentTable, Name: clause.PrimaryKey}, Value: primaryValue})
	}

	tx.RowsAffected = rowsAffected
	return tx
}

func (db *DB) assignInterfacesToValue(values ...interface{}) {
	for _, value := range values {
		switch v := value.(type) {
		case []clause.Expression:
			for _, expr := range v {

package clause_test

import (
	"fmt"
	"testing"

	"gorm.io/gorm/clause"
)

func TestInsert(t *testing.T) {
	results := []struct {
		Clauses []clause.Interface
		Result  string
		Vars    []interface{}
	}{
		{
			[]clause.Interface{clause.Insert{}},
			"INSERT INTO `users`", nil,
		},
		{
			[]clause.Interface{clause.Insert{Modifier: "LOW_PRIORITY"}},
			"INSERT LOW_PRIORITY INTO `users`", nil,
		},
		{

package clause_test

import (
	"fmt"
	"testing"

	"gorm.io/gorm/clause"
)

func TestUpdate(t *testing.T) {
	results := []struct {
		Clauses []clause.Interface
		Result  string
		Vars    []interface{}
	}{
		{
			[]clause.Interface{clause.Update{}},
			"UPDATE `users`", nil,
		},
		{
			[]clause.Interface{clause.Update{Modifier: "LOW_PRIORITY"}},
			"UPDATE LOW_PRIORITY `users`", nil,
		},
		{

		},
		{
			[]clause.Interface{clause.Select{}, clause.From{}, clause.Limit{Limit: &limit0}},
			"SELECT * FROM `users` LIMIT ?",
			[]interface{}{limit0},
		},
		{
			[]clause.Interface{clause.Select{}, clause.From{}, clause.Limit{Limit: &limit0}, clause.Limit{Offset: 0}},
			"SELECT * FROM `users` LIMIT ?",
			[]interface{}{limit0},
		},
		{
			[]clause.Interface{clause.Select{}, clause.From{}, clause.Limit{Offset: 20}},

				for _, cond := range queryConds {
					if c, ok := cond.(clause.IN); ok && len(c.Values) == 0 {
						withoutConditions = true
						break
					}
				}

				if !withoutConditions && db.AddError(tx.Clauses(clause.Where{Exprs: queryConds}).Delete(modelValue).Error) != nil {
					return
				}
			case schema.Many2Many:
				var (
					queryConds     = make([]clause.Expression, 0, len(rel.References))

				if _, ok := db.Statement.Clauses["RETURNING"]; !ok {
					fromColumns := make([]clause.Column, 0, len(db.Statement.Schema.FieldsWithDefaultDBValue))
					for _, field := range db.Statement.Schema.FieldsWithDefaultDBValue {
						fromColumns = append(fromColumns, clause.Column{Name: field.DBName})
					}
					db.Statement.AddClause(clause.Returning{Columns: fromColumns})
				}
			}
		}

				},
			},
			sql: "LEFT JOIN `user` ON `user_info`.`user_id` = `users`.`id`",
		},
		{
			name: "RIGHT JOIN",
			join: clause.Join{
				Type:  clause.RightJoin,
				Table: clause.Table{Name: "user"},
				ON: clause.Where{
					Exprs: []clause.Expression{clause.Eq{clause.Column{Table: "user_info", Name: "user_id"}, clause.PrimaryColumn}},
				},
			},

package clause_test

import (
	"fmt"
	"sort"
	"strings"
	"testing"

	"gorm.io/gorm/clause"
)

func TestSet(t *testing.T) {
	results := []struct {
		Clauses []clause.Interface
		Result  string
		Vars    []interface{}
	}{
		{
			[]clause.Interface{
				clause.Update{},
				clause.Set([]clause.Assignment{{clause.PrimaryColumn, 1}}),
			},
			"UPDATE `users` SET `users`.`id`=?",
			[]interface{}{1},
		},