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A simple implementation of Oracle Dynamic Cursor

Procedure mx_print_common (pd_id in mx_pd_syn.pd_id % type, P_pd_mxb_id in mx_pd_mxb_syn.p_mxb_id % type, P_dept_no in SC _mxk.dept_code % type, P1 SC _bz_syn.bz_code % type, P2 SC _cjjc_syn.cjjc_code % type, P3 SC _mxk.warehouse_num % type) Is Sql2 varchar2 (500); -- store query statements Sql3 varchar2 (500); -- stor

A bluff database.

Original works, allow reprint, reprint, please be sure to hyperlink form to indicate the original source of the article, author information and this statement. Otherwise, legal liability will be held. Http://blog.csdn.net/github_27109687/article/details/73810951-Test_huhy Blog A, topic Student Student Table Field name field Type field meaning s# Int School Number Sname varchar Student Name Sage varchar Student

"ORACLE" constraint Experiment (11g)

CREATE TABLE Student(Sno Number (5) is not NULL,sname VARCHAR2 (),Idcard VARCHAR2 (),createtime DATE default sysdate,Nno Number (2),constraint Pk_student primary KEY (SNO));CREATE TABLE Course(CNO Number (5) is not NULL,CNAME VARCHAR2 (+),constraint Pk_course primary KEY (CNO));CREATE TABLE Nativeplace(Nno Number (2) is not NULL,np_name VARCHAR2 (),constraint Pk_nativeplace primary KEY (Nno));CREATE TABLE SC(Sno Number (5) is not NULL,CNO Number (5) i

Linux kernel upgrade-update NIC driver

/modules/2.6.33-110.el6.x86_64 directory as follows:#modinfo/lib/modules/2.6.33-110.el6.x86_64/kernel/drivers/net/igb/igb.ko Filename:igb.ko Version:2.1.0-k2 LICENSE:GPL Description:intel (R) Gigabit Ethernet Network Driver Author:intel Corporation, srcversion:412d1cb4c85682cbf07976f Alias:pci: v00008086d000010d6sv*sd*bc*sc*i* alias:pci:v00008086d000010a9sv*sd*bc*sc*i* Alias:pci: v00008086d000010a7s

Introduction to Databases (Experiment II) database and table operations __ Database

Database Experiment Two 1. Create a database --**************************--*** 1. Set Up Database SC * * * *--************************** Create db SC Go------------------- -----------use, locate database sc----------------------------usage sc go 2. Create data table --**************************--*** 2. Create Datash

Typical Cases of Database SQL learning: exercises on scores of Professional Students

Typical Cases of Database SQL learning: exercises for scores of professional students; for one question ------ which students have chosen course 1 but not course 2? The following SQL statements are written in different ways ~ No mysqldescSC; + ------- + --------------- + ------ + ----- + --------- + ------- + | Field | Type | Null Typical Cases of Database SQL learning: exercises for scores of professional students; for one question ------ which students have chosen course 1 but not course 2? Th

SystemTap, linuxsystemtap

/7187748Reasons for using systemtap to locate ifconfig dropped data packetsHttp://www.it165.net/ OS /html/201308/5944.htmlExampleHttps://sourceware.org/systemtap/wikiDetailed explanation of System LanguageHttp://blog.csdn.net/linyt/article/details/5204841 #! /Usr/bin/env stap global host_no = 17 global channel = 0 global targetid = 0 global lunid = 15 # determine whether io is delivered to iscsiprobe module ("libiscsi "). function ("iscsi_queuecommand") {if ($ host! = 0 $

MongoDB installs Windows XP

Http://www.cnblogs.com/lzrabbit/p/3682510.htmlMongoDB Windows environment Installation and configurationInstallation ServicesSC create Svnservice binpath= "D:\subversion\bin\svnserve.exe--service-r E:\projectversion" displayname= "Svnservice" Depend= TcpipDelete ServiceSC Delete SvnserviceModify Configurationsc config svnservice binpath= "d:\subversion\bin\svnserve.exe--service-r E:\projectversion" displayname= "Svnservice" Depend= TcpipSet to self-startsc config svnservice start= autoStart the

Mysql DBA Advanced Operations Learning Note-DQL Statement Select Knowledge Explained

DEFAULT ‘0‘ COMMENT ‘学生年龄‘, `Sdept` varchar(16) DEFAULT NULL COMMENT ‘学生所在系别‘, PRIMARY KEY (`Sno`), KEY `index_Sname` (`Sname`)) ENGINE=InnoDB DEFAULT CHARSET=latin1Create Table: CREATE TABLE `course` ( `Cno` int(10) NOT NULL COMMENT ‘课程表‘, `Cname` varchar(64) NOT NULL COMMENT ‘课程名‘, `Ccredit` tinyint(2) NOT NULL COMMENT ‘学分‘, PRIMARY KEY (`Cno`)) ENGINE=InnoDB DEFAULT CHARSET=latin1Create Table: CREATE TABLE `SC` ( `SCid` int(12) NOT NULL AU

SQL Optimization Experience (dump + record)

Label:SQL Optimization ExperienceAdd: Seeing so many friends interested in SQL optimization, I have re-added the content of the next article to share more knowledge about SQL optimization, Like this article friends give a praise, haha, welcome to exchange, common progress. 2015-4-30 supplement: Very Feel the editor's recommendation, but also to the slow query statement optimization again, and attach the optimization record, welcome to read the article.SceneI use the database is mysql5.6, the fol

Oracle SQL Optimization

the expression. The core problem of optimization is to minimize the amount of data involved in the processing of the tables in the query, thus achieving the goal of optimizing time and space. 2 Principles of Join query optimization 2.1 Use single-table operation as much as possible Given three relationship patterns: (example below) S (sno,sname,sec,birthday,email) C (Cno,cname,creadit,tname) SC (Sno,cno,score) Example: Query 1001 students to t

Database statement exercises

the sub-table has related records, it is prohibited to delete the records in the parent table.(34 )~ (35) use the following three database tables:Student table: S (student ID, name, gender, date of birth, Department)Course schedule: C (course No., course name, course class)Course Selection Score Table: SC (student ID, course number, score)In the preceding table, the date of birth is in the date type, the time and score are in the numeric type, and th

UNIX standardization and Implementation Options

whether an implementation supports a given option. As with restrictions, Single UNIX Specification defines three processing methods: (1) the options are defined in (2) The options irrelevant to files or directories are determined using the sysconf function. (3) options related to files or directories are discovered by calling the pathconf or fpathconf function. The options include the symbols in the 3rd column of table 1 and the symbols in the column 2 and 3. If the symbolic constant is n

Typical examples of SQL statements

... Order by Field List DESC (inverted, if directly written in order) 5. Select... From... Limit ". $ start_rowno.", ". ($ pagesize + 1) Section 2 SQL statement instance application Database description: Student (student table ): Stdid int (11) ID Son char (5) Student ID Sname char (20) Name Ssex tinyint (1) Gender Sage char (3) Age System of sdept char (20) Course (course schedule ): CouId int (11) ID CNO char (5) course No. Cname char (20) Course name Cpno char (6) electives No. Ccredit char (

SQL-server data retrieval (Advanced query)

1. Multi-table joinANSI Syntax:Select *From table 1 Join table 2On Table 1. Column = TABLE 2. Column SQL Server Syntax:Select *From table 1, Table 2 ......Where table 1. Column = TABLE 2. Column and ...... Select *From student join SCOn student. Sno = SC. SnOWhere sname = 'zhaopeng' Select student .*From SC join studentOn SC. Sno = student. SnOWhere CNO = 'c101'

Solution to pass varchar2 parameter null through struct in Oracle

_lteq3 varchar2 (1000 );Var_ SQL _gteq3 varchar2 (1000 );Var_ SQL _uneq3 varchar2 (1000 );Var_ SQL _eq3 varchar2 (1000 );Var_hidden3 varchar2 (10 );Var_value3 varchar2 (100 );Var_ I _xskf3 number (2): = 0; -- controls the combination of item numbers----------------------------------------------BeginVar_ SQL: = 'select s. sr_id as commodity id, mp. re_name as sales warehouse, cl. cc_name as item type, s. sr_number as product number, s. sr_name as product name,

Server Security Settings-system services

@: Notifies the selected user and computer to manage alarms. If the service stops, programs that use the management alert will not receive them. If this service is disabled, any service directly dependent on it cannot be started.SC config Alerter start = DISABLEDSC stop Alerter @: Application Experience Lookup Service@: When the application starts, it processes the application compatibility lookup request for the application.@: Suggestion: DisableSC config AeLookupSvc start = DISABLEDSC stop AeL

Basic SQL operations (2)

Known link mode: S (SNO, sname) Student Relationship. Sno is the student ID, and sname is the name C (CNO, cname, cteacher) Course relationship. CNO is the course number, cname is the course name, And cteacher is the course teacher SC (SNO, CNO, scgrade) Course Selection relationship. Scgrade is the score --- Create a table Create Table s(Sno varchar (50) not null,Sname varchar (50) not null, ) Create Table C(CNO varchar (50) not null,Cn

Porterduffxfermode use and working principle of canvas drawing in Android

represents the alpha value, and the next three component RGB represents the color. We use S to represent the source pixel, the color value of the source pixel can be expressed as [Sa, A in SC],SA is an abbreviation for Alpha, Sa represents the alpha value of the source pixel, and C in SC is the abbreviation for colour color, SC represents the RGB of the source p

How to use a Windows Device Driver

. Lab environment Establishment I used my small "lab" during the process ": -A computer with 1 GB memory; -Virtual Machine software, such as Vmware; -Windbg or softice. I use the second method in VMware, but it is not stable; -IDA anti-assembler; -I will mention some software later. Use pipe between the VM and the host for remote debugging, but other methods are usually better. If you want to further study the driver, the establishment of this environment is very important. User-mode code (softw

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