ON: clause.Where{
					Exprs: []clause.Expression{clause.Eq{clause.Column{Table: "user_info", Name: "user_id"}, clause.PrimaryColumn}},
				},
			},
			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{

		}

		return tx.Create(dest)
	} else if len(db.Statement.assigns) > 0 {
		exprs := tx.Statement.BuildCondition(db.Statement.assigns[0], db.Statement.assigns[1:]...)
		assigns := map[string]interface{}{}
		for i := 0; i < len(exprs); i++ {
			expr := exprs[i]

			if eq, ok := expr.(clause.AndConditions); ok {
				exprs = append(exprs, eq.Exprs...)
			} else if eq, ok := expr.(clause.Eq); ok {

											}

											exprs = append(exprs, clause.Expr{SQL: onSQL, Vars: vars})
										}
									}
								}
							}

							return clause.Join{
								Type:  joinType,
								Table: clause.Table{Name: relation.FieldSchema.Table, Alias: tableAliasName},
								ON:    clause.Where{Exprs: exprs},
							}
						}

						parentTableName := clause.CurrentTable

			for w := 0; w < whereCount; w++ {
				s = s.clone()
				s.AddClause(clause.Where{
					Exprs: s.BuildCondition(fmt.Sprintf("where%d", w)),
				})
			}

			s1 := s.clone()
			s1.AddClause(clause.Where{
				Exprs: s.BuildCondition("FINAL1"),
			})
			s2 := s.clone()
			s2.AddClause(clause.Where{
				Exprs: s.BuildCondition("FINAL2"),
			})

			if reflect.DeepEqual(s1.Clauses["WHERE"], s2.Clauses["WHERE"]) {

					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))

	} else {
		clause.Expression = s
	}
}

// CommaExpression represents a group of expressions separated by commas.
type CommaExpression struct {
	Exprs []Expression
}

func (comma CommaExpression) Build(builder Builder) {
	for idx, expr := range comma.Exprs {
		if idx > 0 {
			_, _ = builder.WriteString(", ")
		}
		expr.Build(builder)
	}

			optimizer.ModifyStatement(tx.Statement)
		} else {
			whereConds = append(whereConds, cond)
		}
	}

	if len(whereConds) > 0 {
		tx.Statement.AddClause(clause.Where{Exprs: tx.Statement.BuildCondition(whereConds[0], whereConds[1:]...)})
	}
	return
}

var tableRegexp = regexp.MustCompile(`(?i)(?:.+? AS (\w+)\s*(?:$|,)|^\w+\s+(\w+)$)`)

	for idx, column := range groupBy.Columns {
		if idx > 0 {
			builder.WriteByte(',')
		}

		builder.WriteQuoted(column)
	}

	if len(groupBy.Having) > 0 {
		builder.WriteString(" HAVING ")
		Where{Exprs: groupBy.Having}.Build(builder)
	}
}

// MergeClause merge group by clause
func (groupBy GroupBy) MergeClause(clause *Clause) {
	if v, ok := clause.Expression.(GroupBy); ok {

					selectExpr := clause.CommaExpression{}
					for _, column := range q.db.Statement.Selects {
						selectExpr.Exprs = append(selectExpr.Exprs, clause.Expr{SQL: "?", Vars: []interface{}{clause.Column{Name: column}}})
					}

					if len(selectExpr.Exprs) == 0 {
						selectExpr.Exprs = []clause.Expression{clause.Expr{SQL: "*", Vars: []interface{}{}}}
					}

					partitionBy := clause.CommaExpression{}

	newDB.Clauses(
		clause.From{
			Tables: []clause.Table{{Name: "users"}},
			Joins: []clause.Join{
				{
					Table: clause.Table{Name: "companies", Raw: false},
					ON: clause.Where{
						Exprs: []clause.Expression{
							clause.Eq{
								Column: clause.Column{
									Table: "users",
									Name:  "company_id",
								},
								Value: clause.Column{
									Table: "companies",