union n. 1.聯(lián)合,結合,合并;團結,融洽,一致。 2.同盟,聯(lián)盟。 3.公會,協(xié)會;工會;〔U-〕 大學生俱樂部。 4.結婚,婚姻。 5.〔the U-〕 聯(lián)邦。 6.〔英國〕聯(lián)合教會。 7.〔英國〕教區(qū)間的救濟工作聯(lián)合會;聯(lián)合救濟院。 8.聯(lián)邦旗,(特指)英國國旗。 9.【紡織;印染】(棉和麻等的)混紡織物;交織織物。 10.【機械工程】聯(lián)接,管接,管套接。 11. 【數(shù)學】并集;邏輯和。 12.【醫(yī)學】愈合。 peasants' union 農會。 U- is strength. 團結就是力量。 a three-way union 三通管接頭。 fly a flag union down 【航?!繏斓蛊臁苍怆y信號〕。 in union 共同,一同。 the Union 1. 1707年英吉利和蘇格蘭的合并;1801年大不列顛和愛爾蘭的合并。 2. 美利堅合眾國。 the Soviet U- (前)蘇聯(lián)。 the U- flag = the U- Jack 英國國旗。 union by (the) first intention 【醫(yī)學】第一期愈合。 union by (the) second intention 【醫(yī)學】第二期愈合〔化膿后愈合〕。
The union operation is different from using joins that combine columns from two tables Union運算不同于使用聯(lián)接合并兩個表中的列的運算。
Specifies that all union operations are performed by merging , hashing , or concatenating union sets 指定所有union運算由合并、哈希或串聯(lián)union集執(zhí)行。
If union is involved in the main query , only the last query involving a union operation can have the option clause 如果主查詢中涉及union ,則只有涉及union運算符的最后一個查詢才能有option子句。
Then , the data types of the final result of the union operation are cast to the corresponding columns of the table targeted by the insert operation 這樣, union運算的最終結果的數(shù)據(jù)類型將轉換為與insert操作的目標表中的列相應。
The experiments also show that our union operation algorithm is superior to the algorithm that extracts the rules from context directly in time - consuming 實驗結果同樣表明我們的并運算算法在時間性能上要優(yōu)于直接從原形式背景中提取規(guī)則的算法。
The definitions of the columns that are part of a union operation do not have to be the same , but they must be compatible through implicit conversion 作為union運算一部分的列定義可以不相同,但它們必須通過隱式轉換實現(xiàn)兼容。如果數(shù)據(jù)類型不同,則根據(jù)
A technique to simulate and evaluate the command and control system in union operation with the system scenarios is presented to reduce the time and expense of system development 摘要為適應一體化聯(lián)合作戰(zhàn)指揮控制系統(tǒng)快速決策與實時性能評價的要求,提出一種基于場景的系統(tǒng)快速模擬與評價模型。
When a union operator is inside an insert statement , sql server 2005 independently casts the data type of each union operation according to the rules of data type conversion Insert into . . . select語句中的union當union運算符用在insert語句中時, sql server 2005根據(jù)數(shù)據(jù)類型轉換規(guī)則獨立地轉換每個union運算的數(shù)據(jù)類型。
Based on the investigation of the average heat load during heating period and non - heating period , the paper conducts the distribution of heat load , thermodynamical calculation and economic index calculation for the union operation of various heating units 根據(jù)調查采暖期和非采暖期的平均熱負荷,對不同類型的供熱機組聯(lián)合運行進行了熱負荷的分配、熱力計算及經(jīng)濟指標的計算。
Some net operations , such as addition , cartesian addition , cartesian production and general cartesian production of weighted net systems , were presented in some papers , and union operation , decomposition operations were given in others 已有文獻提出了petri網(wǎng)的加法、笛加、笛積、廣義笛加等運算并研究了一系列重要性質。另有文獻定義了petri網(wǎng)的并運算、分解運算,討論了這些運算保持網(wǎng)的結構性質和公平性的條件。