嵌套查詢 的英文怎麼說
中文拼音 [qiàntàozhāxún]
嵌套查詢
英文
nested query-
So we extent its function by adding sqlquery expressions which contain sql. it gets results from queries by jdbc api and convert it into xml format. then it uses xquery complier to query in succession in order to integrate related databases
Xquery語言本身並不能實現該功能，所以我們對它進行擴展，增加嵌套sql語句的sqlquery表達式，使用jdbc來查詢sql語句，而將產生的結果轉換為xml文檔，再使用xquery編譯器來實現查詢要求，達到集成關系數據庫的目的。Involuntarily, questions of these engineering datas " management appear, datas " persistance only depending relational model and rdbms is greatly insufficient, so this paper carefully studies object - relational mapping based on rdbms based on the analyse of home & overseas actualities, correlative theories and realizing methods of object - relational mapping, we find opl based on rdbms is the most suitable for object relatinoal mapping of clera. based on the engineering application analyse of opl in clera, function requirements, database modes, interface criterions and functions, running modes of opl have being detailedly described. with the framework of microsoft dna, a kind of realizing method of opl based on com / dcom / activex component technology has being brought forward, and this paper describes realizing keys from base tables " definition, object id and class hx class and inheritance of class, object storage, parallel control and affair, object query, object nesting, relations between objects, support of complex data types, right control of object and buffer management of object
本文在分析對象?關系映射技術的國內外現狀、相關理論及實現方法的基礎上，研究發現基於rdbms的opl是目前最適合clera的對象?關系映射方法；在clera的opl應用分析的基礎上，詳細描述了opl的功能要求、數據庫模式、介面規范與功能、運行方式等內容；結合microsoftdna開發框架，提出了一種基於com dcom activex組件技術的opl實現思路，並從基本表定義、對象標識與類標識、類與類繼承、對象存儲、並發控制與事務、對象查詢、對象嵌套、對象間聯系、復雜數據類型的支持、對象級權限控制及對象緩沖管理等幾方面概述了實現要點。In general, sql 2005 notification supports select queries as well as stored procedures, and supports multiple and nested queries, but does not support aggregate operations such as
總之， sql 2005通知支持select查詢和存儲過程，支持多個查詢和嵌套查詢，但不支持聚合操作（例如Returns query results in a simple, nested xml tree
以簡單的嵌套xml樹返回查詢結果。Otherwise, the nested query must be processed for each result of the outer query to ensure elimination of duplicates
否則，為確保消除重復值，必須為外部查詢的每個結果都處理嵌套查詢。One example : sql can join tables or nest queries
例如： sql可以連接表或嵌套查詢。This statement queries multiple data sources to create a nested table
此語句可以查詢多個數據源以創建嵌套表。Train nested structure demonstrates how to combine the dmx insert into mining structure statement with the shape source data query to train a mining model that contains nested columns with data that contains nested tables, retrieved using a query, from an existing data source. train structure
演示如何將dmx insert into語句和shape源數據查詢組合使用來定型這樣的挖掘模型，該挖掘模型包含嵌套列，而嵌套列中的數據包含使用查詢從現有數據源檢索到的嵌套表。All compilers that support the common language runtime emit the simple name of a nested class, and reflection constructs a mangled name when queried, in accordance with the following conventions
所有支持公共語言運行庫的編譯器將發出嵌套類的簡單名稱，並且在接受查詢時，反射將依照下列約定構造一個重整名稱。All compilers that support the common language runtime will emit the simple name of a nested class, and reflection constructs a mangled name when queried, in accordance with the following conventions
所有支持公共語言運行庫的編譯器將發出嵌套類的簡單名稱，並且當被查詢時，反射將依照下列約定構造一個mangled名稱。Explains how to create subqueries, or nested queries
解釋如何創建子查詢或嵌套查詢。Join plan directives that force optimizer to use the designated join method to join tables in the query, either nested loop join, sort merge join, or dynamic hash join
連接計劃指示，強制優化器使用指定的連接方法來連接查詢中的表，要麼是嵌套循環連接、分類合併連接，要麼是動態哈希連接。You can always convert a nested query into an equivalent join
您始終可以將嵌套查詢轉換成等價的連接。An sql statement that contains a subquery. the subquery is a query within the sql statement used to determine values in the main or parent statement
嵌套查詢：包含子查詢的sql聲明。子查詢用於定義主體查詢或者父查詢中使用到的某些值。Up to 32 levels of nesting is possible, although the limit varies based on available memory and the complexity of other expressions in the query
盡管根據可用內存和查詢中其他表達式的復雜程度的不同，嵌套限制也有所不同，但嵌套到32層是可能的。分享友人