clause.Eq{Column: column, Value: (*string)(nil)},
			clause.Eq{Column: column, Value: (*int)(nil)},
			clause.Eq{Column: column, Value: (*bool)(nil)},
			clause.Eq{Column: column, Value: (interface{})(nil)},
			clause.Eq{Column: column, Value: sql.NullString{String: "", Valid: false}},
		},
		Result: "`column-name` IS NULL",
	}, {
		Expressions: []clause.Expression{

			}},
			"SELECT * FROM `users` WHERE `users`.`id` = ? OR `name` <> ? AND `age` > ?",
			[]interface{}{"1", "jinzhu", 18},
		},
		{
			[]clause.Interface{clause.Select{}, clause.From{}, clause.Where{

			builder.WriteByte('@')
			builder.WriteString(string(name))
		}
	}
}

// IN Whether a value is within a set of values
type IN struct {
	Column interface{}
	Values []interface{}
}

func (in IN) Build(builder Builder) {
	builder.WriteQuoted(in.Column)

	switch len(in.Values) {
	case 0:
		builder.WriteString(" IN (NULL)")
	case 1:
		if _, ok := in.Values[0].([]interface{}); !ok {

				newName = field.DBName
			}
		}

		return m.DB.Exec(
			"ALTER TABLE ? RENAME COLUMN ? TO ?",
			m.CurrentTable(stmt), clause.Column{Name: oldName}, clause.Column{Name: newName},
		).Error
	})
}

// MigrateColumn migrate column
func (m Migrator) MigrateColumn(value interface{}, field *schema.Field, columnType gorm.ColumnType) error {
	if field.IgnoreMigration {

			}
		case map[string]interface{}:
			keys := make([]string, 0, len(v))
			for i := range v {
				keys = append(keys, i)
			}
			sort.Strings(keys)

			for _, key := range keys {
				reflectValue := reflect.Indirect(reflect.ValueOf(v[key]))
				column := clause.Column{Name: key, Table: curTable}
				if strings.Contains(key, ".") {
					column = clause.Column{Name: key}
				}

   * @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.
   *

	for idx, key := range keys {
		assignments[idx] = Assignment{Column: Column{Name: key}, Value: values[key]}
	}
	return assignments
}

func AssignmentColumns(values []string) Set {
	assignments := make([]Assignment, len(values))
	for idx, value := range values {
		assignments[idx] = Assignment{Column: Column{Name: value}, Value: Column{Table: "excluded", Name: value}}
	}
	return assignments

	assignments := []clause.Assignment(set)

	sort.Slice(assignments, func(i, j int) bool {
		return strings.Compare(assignments[i].Column.Name, assignments[j].Column.Name) > 0
	})

	if len(assignments) != 2 || assignments[0].Column.Name != "name" || assignments[0].Value.(string) != "jinzhu" || assignments[1].Column.Name != "age" || assignments[1].Value.(int) != 18 {
		t.Errorf("invalid assignments, got %v", assignments)
	}

// UnmarshalYAML - BatchJobNotification extends unmarshal to extract line, column information
func (b *BatchJobNotification) UnmarshalYAML(val *yaml.Node) error {
	type notification BatchJobNotification
	var tmp notification
	err := val.Decode(&tmp)
	if err != nil {
		return err
	}

	*b = BatchJobNotification(tmp)
	b.line, b.col = val.Line, val.Column
	return nil
}

  }

  /**
   * Returns an immutable cell with the specified row key, column key, and value.
   *
   * <p>The returned cell is serializable.
   *
   * @param rowKey the row key to be associated with the returned cell
   * @param columnKey the column key to be associated with the returned cell
   * @param value the value to be associated with the returned cell
   */