C# (CSharp) ResolveExpression.ResolveSelectOfUpdate示例

示例#1

        public SqlProvider <T> FormatUpdateSelect(Expression <Func <T, T> > updator)
        {
            var update = ResolveExpression.ResolveUpdate(updator);

            var selectSql = ResolveExpression.ResolveSelectOfUpdate(typeof(T).GetProperties(), Context.QuerySet.SelectExpression);

            var where = ResolveExpression.ResolveWhere(Context.QuerySet.WhereExpression);

            var whereSql = where.SqlCmd;

            Params = where.Param;
            Params.AddDynamicParams(update.Param);

            var topSql = Context.QuerySet.TopNum.HasValue ? " TOP " + Context.QuerySet.TopNum.Value : "";

            SqlString = $"UPDATE {topSql} {FormatTableName(false)} WITH ( UPDLOCK, READPAST ) {update.SqlCmd} {selectSql} {whereSql}";

            return(this);
        }