求值謂詞 的英文怎麼說
中文拼音 [qiúzhíwèicí]
求值謂詞
英文
evaluable predicate-
Db2 can determine, from the values in the sql predicate, the lowest and highest partition that can possibly contain the table rows that are requested by the sql statement, and then limits the data scan to that range of partitions
根據sql謂詞中的值, db2可以判斷可能包含sql語句所請求的表行的最低分區和最高分區,然後將數據掃描限制在這一范圍內的分區中。
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