Oracle

First step: Build a package with a cursor typeSql>create or Replace package testpackageAs type test_cursor is REF CURSOR; --Define a cursor named Test_cursorEnd Testpackage;Step two: Write a paged stored procedureSql>create or replace procedure

When you look at the MySQL 5.1 reference manual, you find that MySQL provides a two-table associated update operation. The original text reads as follows:UPDATE items,monthSET items.price=month.PriceWHERE items.id=month. ID;Constructs a table in

Acknowledgement URL: http://www.cnblogs.com/dongyangbolg/p/3455422.htmlHttp://www.cnblogs.com/ysq0908/p/4737977.html------------------------------------------------------------------First, the problem descriptionMaven failed to download "Oracle14-10.

Beginner PL/SQL.In Oracle, the 3 analytic functions of Rank,dense_rank and row_number can be used to number records, and one of the above three methods can be considered in handling record rankings.RANK: Each row is numbered by the condition after

Oracle user creation and permission settings [reprint]Permissions:Create sessionCREATE tableUnlimited tablespaceConnectResourceDbaCases:#sqlplus/nologSql> Conn/as sysdba;Sql>create user username identified by passwordSql> Grant DBA to username;Sql>

1. Internal connection is simpleSelect A.*, b.* from, b where a.id = b.IDSelect A.*, b.* from A inner join B on a.id = b.IDThe above two sentences are completely equivalent.2. Left Outer connectionSELECT * FROM EMP a LEFT JOIN Dept D on

2015-10-24DirectoryResources[1] Lin Shuze. Oracle 11g R2 dba operation Guide [M]. Beijing: Tsinghua University Press, 2013[2] Introduction to Oracle Backup and recovery (physical and logical backups)[3] Oracle Backup and recovery case[4] ORACLE

To create a function:Create or Replace function My_fun (in_no in number) return VARCHAR2 isOut_name VARCHAR2 (64);BeginSelect Ename to Out_name from EMP where emp.empno=in_no;return out_name;End My_fun;Java Program Demo:Import

1. The difference between Oracle's OCI Driver and Thin Driver①JDBC OCI:OCI is the abbreviation for Oracle call interface, which is similar to the traditional ODBC driver. Because it requires the Oracle call Interface and NET8, it needs to install

Sql*loader is an Oracle data load tool that is typically used to migrate operating system files to an Oracle database. Sql*loader is a large dataThe warehouse selection uses the Load method as it provides the quickest way (direct,parallel). Now, let'

The difference between rownum and rowID is summed up:RowNum and rowID are pseudo-columns, but the two are fundamentally different.RowNum is to assign a logical number to each row based on the results of the SQL query, so your SQL will cause the

Have to spit the groove on the network many wonderful and irresponsible tutorials, everywhere is copied. It's a complicated thing to do with four commandments.Use the following command to install the line, there will be two times agreed to the

Oracle Learning Portal Series SevenNetwork Management and ConfigurationWe learned about patterns and users. Contains the schema definition and the role of the pattern.Let's take a look at the network management and configuration in the Oracle

oraclegoldengateIntroductionGOLDENGATETDM (transaction data management) software is a log-based structured data replication software, which through the analysis of the source database online log or archive log to obtain data deletion and change, and

Bug 9772171-database startup hangs on Windows if machine have more than cores [ID 9772171.8]This article has been explained: fix (fix) the bug in 11.2.0.2.And now the 11GR2 version number has been released 11.2.0.4. And 11.2.0.4 is finally the 11GR2

We know that in the process of parsing SQL statements, there is a process called optimization. Oracle has a component called optimizer specifically designed to handle SQL optimizations. After considering many of the factors related to query

Optimize Big Data Table query and data table Optimization 1: Index, the first thing we think of first is creating an index. Creating an index can multiply the query efficiency and save time. However, if the data volume is too large, simply creating

Oracle learning notes first knowledge Oracle, oracle learning notes first KnowledgeDatabase Introduction A Database is a warehouse that organizes, stores, and manages data according to the data structure. SQL is the acronym of Structured Query

ADDM Reports bug: Significant virtual memory paging was detected on the host operating system, addmpaging When you view the ADDM report (the database version is ORACLE 10.2.0.5.0), it is very unreliable: Significant virtual memory paging was

Regular oracle database backup and oracle Database Backup Currently, we need to design a batch of processing files to achieve full backup on Monday, Incremental backup on Tuesday, Friday, and Incremental backup on Thursday and Sunday. In addition,