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:Select * from Xinxi where name= ' John Doe ' and nianling=2610, or ... "or"Select * from Xinxi where name= ' John Doe ' or nianling=2611, IN (...) In... Range ofColumn names are queried for which range to query.Select * from Xinxi where nianling in (21,22,23,24)Select * from Xinxi where name in (' John Doe ', ' Zhao Liu ')12, not...in (...) Not... Range ofSelect * from Xinxi where name is not in (' John Doe ', ' Zhao Liu ')13, wildcard% means any number of any character; Like, fuzzy query, when

One, the Oracle 11g database download, installation:Download:Then, based on this hyperlink build your own user, database.Http://wenku.baidu.com/view/caa21c1a650e52ea551898e2.htmlSecond, Navicat Premium connect Oracle1. Review the Tnsnames.ora file in the installation directory (F:\app\Administrator\product\11.2.0\dbhome_1\NETWORK\ADMIN).2, the connection, the first configuration option under the Oci file, download:Associated with the time,:OCI directo

statement, create a new user before performing the import, and assign the user table space and permissions. The steps to Tablespace and grant separately are very important. The first time the data was imported, because the user after create was not assigned the DBA and connect permissions, many migration failures were caused.When creating a user, pay attention to specifying tablespace, the tablespace can ask the DBA, or create one yourself, but you create a time to specify the parameters of Tab

Copyright NOTICE: This article is the original article of Bo Master, reprint annotated source http://blog.csdn.net/u0131427811. Super key, candidate key, primary key, foreign keyHyper-Key: A property set that uniquely identifies a tuple in a relationship is called a hyper-key of a relational pattern. A property can be used as a super-key, and multiple properties can be combined together as a super-key. The super-key contains the candidate and primary keys.candidate Key: is the least-key, that is

on multiple columns Illegal query using the GROUPING function--e Illegal statements when using grouping functions HAVING clause Nested group functions Summary Seventh Zhang Ziyi (query Using subqueries to resolve issues Sub-query Working with sub-queries Rules that use sub-queries 1. Sub-queries are enclosed in parentheses 2. Only the query is placed on the right side of the comparison operator 3. Do not add an ORDER BY clause in a subquery 4. Use single-line operators f

or negative currencies. In Microsoft SQL Server, the data type of the currency data isMoney and SmallMoney The Money data type requires 8 storage bytes, and the SmallMoney data type requires 4 bytes of storage. 　　 (7) Special data types Special data types include data types that were not previously mentioned. There are 3 unique types of data, namelyTimestamp, Bit and uniqueidentifier。The Timestamp is used to represent the sequence of SQL Server activities in a binary projection format. Timesta

1. Experimental Content1) Create a database with Management Studio University_mis2) Create a relational database base table using SQL statements:Student table Students (Sno,sname, semail,scredit,sroom);Teacher Table Teachers (tno,tname,temail,tsalary);Curriculum courses (CNO,CNAME,CCREDIT);Score Table reports (Sno,tno,cno,score);Where: Sno, Tno, CNO are table students, table teachers, table courses The pri

Label:2.1MySQL Getting Started 1) Download to mysql website. 2) Install mysql software 3) Use Verify success turn on cmd-- input mysql-u root-p Enter password return C:\users\apple>mysql-u root-p Enter Password: * * * Welcome to the MySQL Monitor. Commands End With; or \g. Your MySQL Connection ID is 2 Server version:5.5.40 MySQL Community Server (GPL) Copyright (c), the Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of the Oracle Corporation and/or i

Introduce a good book "massive database solutions" Http://www.laoxiong.net/introducing-a-perfect-book.html A few days ago, I received "massive database solutions" from my friend, dbsnake-A database technology book from South Korea, then I threw myself into reading this

95031 107Wang Liju1976/1/ at 95033 101Li June Man1976/2/ - 95033 109Wang Fang Men1975/2/Ten 95031 103Contacts male1974/6/3 95031 6rows selected SQL> SetServeroutput on; SQL> ExecuteHanqi (95031); Kuanming Wang Fang contacts PL/SqlprocedureSuccessfully completed v. Functions (function) Functions are constructed in a similar way to stored procedures CREATE OR REPLACE FUNCTION inch Number inch Number RETURN Number as number ; BEGIN C:=+ B; RETUR

that you are calling to change the value of a parameter, you must pass it by reference using the ref or out keyword.Note: Passing parameters by reference also uses a ref-decorated parameter when calling a method.Comparison value passing and reference passingIn summary, a value pass is a copy of the value of a variable that is passed to the method so that the parameter of the method is the same as the value of the argument. Modifying a parameter in a called method is also an update to the data o

Oracle Performance Diagnosis art (milestone book on Oracle Database optimization) [Original book name] troubleshooting Oracle Performance[Original Publishing House] apress[Author] (Swiss) Christian antognini [same as the author's work] [Translator's introduction][Translated by] Tong Jiawang; Hu Yiwen; Feng dahui [same translator's work][

In the front we introduced the file version of the guest book, now we might as well imagine: if the message file inside a lot of messages, and you are anxious to find a message in one of them, then open the TXT message file, to a paragraph of the message records, you dare to guarantee that you will not faint on the spot? And the most annoying thing about the file book is far more than that, more irritating:

PreparedStatement pstmt=con.preparestatement (SQL); Pstmt.setstring (1, Book.getbookname ()); Pstmt.setstring (2, Book.getauthor ()); Pstmt.setstring (3, Book.getsex ()); Pstmt.setfloat (4, Book.getprice ()); Pstmt.setstring (5, Book.getbookdesc ()); Pstmt.setint (6, Book.getbooktypeid ()); Pstmt.setint (7, Book.getid ()); returnpstmt.executeupdate (); //Return value is the number of paths affected } Iv. Data deletion: /*** Book Information delet

650) this.width=650; "src=" Http://img.baidu.com/hi/jx2/j_0047.gif "alt=" J_0047.gif "style=" Padding:0px;margin : 0px;vertical-align:top;border:none; "/>" new book recommendation "three-dimensional textbook of Shanghai University Fine Course" Database principle and application and practice --sql Server 2016 "3rd edition and " Database principles and Applications

Tutorials | data | Database in the previous we introduced the file version of the guest book, now we might as well imagine: if the message file inside a lot of messages, and you are anxious to find a message in one of them, then open the TXT message file, to a paragraph of the message records, you dare to guarantee that you will not faint on the spot? And the most annoying thing about the file

Tags: "simple message book" with HTML New database implementation"Simple message book" with HTML New database implementationWeb message book with database implementationvar datatable = null;var db = OpenDatabase (' Mydata ', ' ',

Label:What is it? Silbershartz, the latest version of the sixth edition Database system Concepts distinguishes the concept of a data base from the database vendor (e.g., Oracle,mysql, etc.). In addition, many colleges and universities choose as the undergraduate, the postgraduate database course textbook. Watercress rating 80% or more. Among them, a h

Project Description: The project is based on the Android platform phone Address Book, the main module is divided into four parts: contact management module, call records Management module, SMS Management module, System Setup module. The system structure diagram is as follows: Project start Date: May 28, 2014 Note: All source code of this development project will be shared to everyone. The purpose of this project is to develop these points: first, the

Tags: implementation mechanism originally page organizes tables based on free article content index ClustFollowing the book on SQL tuning (SQL tuning or SQL optimization) in the essentials of high-performance SQL tuning and case resolution, we talk today about one of the most important core mechanisms of SQL tuning technology and half of the work-index (index) in every major relational repository. We know that "high-performance SQL Tuning essentials a