func (db *DB) Scopes(funcs ...func(*DB) *DB) (tx *DB) {
	tx = db.getInstance()
	tx.Statement.scopes = append(tx.Statement.scopes, funcs...)
	return tx
}

func (db *DB) executeScopes() (tx *DB) {
	scopes := db.Statement.scopes
	db.Statement.scopes = nil
	for _, scope := range scopes {
		db = scope(db)
	}
	return db
}

// Preload preload associations with given conditions

		curTable := stmt.Table
		if curTable == "" {
			curTable = clause.CurrentTable
		}

		switch v := arg.(type) {
		case clause.Expression:
			conds = append(conds, v)
		case *DB:
			v.executeScopes()

			if cs, ok := v.Statement.Clauses["WHERE"]; ok {
				if where, ok := cs.Expression.(clause.Where); ok {
					if len(where.Exprs) == 1 {
						if orConds, ok := where.Exprs[0].(clause.OrConditions); ok {