句子掃描 的英文怎麼說
中文拼音 [jùzisǎomiáo]
句子掃描
英文
textual scan-
First, the minimal and maximal sentences of cfg are calculated. then the character strings are scanned one by one from the minimal sentence in certain order till the maximal sentence. the scanned character strings are printed or skipped according to a rule
該枚舉演算法首先計算上下文無關語言的最小序句子和最大序句子，然後從最小序句子開始按照一定的順序掃描字元串，直至掃描到最大序句子為止，對被掃描的字元串進行判斷取捨。Additionally, the query plans must require that these ranges be scanned in order either because there is an order by clause on t. a, or because an iterator within the plan requires that it consume the tuples in sorted order
此外，查詢計劃必須要求按順序掃描這些范圍，原因是對t . a應用了order by子句，或者計劃中的迭代器要求它按排序順序處理元組。If order by is required, eliminate the column that participates in the multiple range scans t. a in the example above from the order by clause
如果需要order by ，則通過order by子句清除參與多次范圍掃描的列（如上面示例中的t . a ） 。
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