union operation造句
例句與造句
- 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(jié)果的數(shù)據(jù)類型將轉(zhuǎn)換為與insert操作的目標(biāo)表中的列相應(yīng)。 - 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(jié)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。 - It's difficult to find union operation in a sentence. 用union operation造句挺難的
- 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(zhuǎn)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(yīng)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(dāng)union運算符用在insert語句中時， sql server 2005根據(jù)數(shù)據(jù)類型轉(zhuǎn)換規(guī)則獨立地轉(zhuǎn)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(diào)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(biāo)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(zhì)。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(jié)構(gòu)性質(zhì)和公平性的條件。 - 3 ) we build a mathematical model of distributed concept lattice and discuss the union operation to combine two extention - independent same field lattices and the union operation to combine two intention - independent same field lattices . the experiments show that our union operation algorithm is superior to the algorithm that gets the lattice from context directly in time - consuming . for the completeness in mathematics , we also discuss the intersect operation to remove everything except the overlapping areas of two same field lattices
( 3 )給出了分布式概念格的數(shù)學(xué)模型，重點討論了在分布式概念格的數(shù)學(xué)模型下，外延獨立和內(nèi)涵獨立的兩個同域概念格的并運算，研究高效的合并兩個同域概念格的算法，實驗結(jié)果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構(gòu)造概念格的算法。 - The conditions for preserving structural and dynamic properties of the net after these operations were discussed . some net operations are further studied in this thesis . union operation is analyzed and one exampl e is given to make the background and meaning clearly for net decomposition operations
結(jié)合近年來petri網(wǎng)理論的發(fā)展，本文進一步研究了網(wǎng)運算，分析了并運算的代數(shù)性質(zhì)；針對網(wǎng)的分解運算，給出實例顯示了網(wǎng)的分解運算的背景及意義；同時討論了網(wǎng)的并分解及和分解，研究了這些運算保持網(wǎng)的結(jié)構(gòu)性質(zhì)和動態(tài)性質(zhì)的條件。