To determine an effective order for the equality columns, order them based on their selectivity, listing the most selective columns first (leftmost in the column list).
英
美
释义
若要确定相等列的有效顺序,请基于其选择性排序,首先列出选择性最强的列(列列表中的最左侧)。
把海词放在桌面上,查词最方便
触屏版
|
电脑版
©2003 - 2024 海词词典(Dict.cn)
立即下载