db2 subquery

* fromEmpwhereEmpno not inch(SelectEmpno fromEmpwhereRowNumSize*(page- 1)) andRowNumsize; --sorting and then paging query --number of data after sorting (Efficiency row 2nd) Select * from(SelectRowNum RN, D.* from(Select * fromEmpOrder bySaldesc) d)whereRn> 5 andRn One; --Paging function: row_number function (1th efficiency row) SelectRow_number () Over(Order bySaldesc) RN, EMP.* fromEMP; --page Out Select * from(SelectRow_number () Over(Order bySaldesc) RN, EMP.* fromEm

,T.remark as REMARK,T.add_type as AddType,T.processinstanceid as Processinstanceid,T.custody_dept as Custodydept,T.used_year as Usedyear,T.id as ID,M.status as Clearstatus,--Nn.status as Maintainstatus,(Select A.statusFrom (select a.asset_id, B.statusFrom Asset_maintain AJoin Workflow.workflow_execution bOn b.processinstanceid = A.processinstanceidORDER BY b.create_time Desc) Awhere a.asset_id = t.asset_idand rownum = 1) as MaintainstatusFrom Asset_info tLeft JOIN (SELECT *From Asset_clear CJoin

First, the insertion of dataInsert columns into a table sequentially (this is commonly used): INSERT into Table name values (Value1,value2,value3,........)Insert for a specific column: INSERT into table name (COLUMN1,COLUMN3) VALUES (value 1,value3)Example: INSERT into customer values (1, ' Lily ', ' female ', ' down Street ');Insert into customer (Name,sex) VALUES (' Lily ', ' female ');Second, the data query5 Types of statements queried: where (conditional query)/having (filter)/group by (grou

|+----+--------------------+------------------+--------+-----------------+-------+---------+------------+------- --+--------------------------+| 1 | PRIMARY | Abc_number_prop | All | NULL | NULL | NULL | NULL |2679838| Using where || 2 | DEPENDENT subquery | Abc_number_phone | Eq_ref | phone,number_id | Phone | 70 | Const,func |1| Using where; Using Index |+----+--------------------+------------------+--------+-----------------+-------+---------+----

Document directory The first half of this article: connecting to a remote DB2 database using command lines The second part of this article: Use coolsql to connect to the DB2 database configuration Diagram The first half of this article: connecting to a remote DB2 database using command lines. The second half of this article: connecting to a

What we will introduce to you today is the correct use of the DB2 dart tool to understand the DB2 data storage method, the following is a detailed description of the main content of the article on how to use the DB2 dart tool to understand the DB2 data storage method. I hope you will have a better understanding of it a

Fortunately, DB2 provides the related USEREXIT Program (also known as the user exit Program), which allows us to manage log files and has the possibility of extended functions. At this point, DB2 is obviously better than Orac. Fortunately, DB2 provides the related USEREXIT Program (also known as the user exit Program), which allows us to manage log files and has

The following article describes how to create a second DB2 instance in the command line status in the DB2 database under the linux operating system, the following describes the actual operation steps for creating a DB2 instance. We hope this will help you in your future study. In DB2 in linux, create the second

DB2 has three main security mechanisms to help DBAs implement database security plans: Authentication, authorization, and privilege ). Five different permission levels: sysadm, sysctrl, sysmaint, dbadm, and load A new concept in DB2 9 is tag-based access control (lbac) that allows control of who has the right to access individual rows and/or columns. Install sample DBDb2cmdDb2sampleCreating Database "sampl

Create a federated database for DB2 UDB and Informix IDS using DB2 II Cisco and Huawei network technology-the largest network content Teaching Resource Network (vlan9.com) Http://www.qqread.com Author: Source: blog.chinaunix.net browse: 45 DB2 II is now called WebSphere II Environmen

Today I saw a group of friends asked two questions comparison basis:1 How to confirm my DB2 is the root What about the installation? In fact, from DB2 UDB V9.1 have db2ls This command, the problem is much simpler, we just need to simply run down the db2ls, and then see the output of the Installer UID is 0(Root uid), as shown in:[[email protected] ~]$ db2lsinstall Path level Fix Pack Special install number i

Tags: executing logical maximum return value multiline nbsp List operation representation# #子查询The query in parentheses is called a subquery, also called an internal query, which executes before the main query.The result of the subquery is the main query (external query) using EXPR operator including the comparison operator. Single-line operators:>, =, >=, Mul

DBAs or developers who have used Oracle or other relational databases have the experience of thinking that the database has been optimized for the subquery, that it is a good choice to drive the execution of the table, and then porting that experience to the MySQL database, but unfortunately, MySQL may disappoint you in the processing of subqueries, as we encounter this problem in our production systems: Select i_id, sum (I_sell) as I_sell fro

Before you start About this series Are you considering participating in the DB2 SQL Procedure Developer certification exam (exam 735)? If so, you come to the right place. These six DB2 certifications prepare tutorials to discuss all the basics of the topics you need to know before taking an exam. Even if you're not going to take the certification exams right away, these tutorials are also good materials t

The DB2 tutorial you are looking at is: Compare the XML features in DB2 9 and DB2 v8.x. Brief IntroductionXML in the DB2 UDB Version 8.x supports a relational infrastructure based on DB2. The XML data is either stored as a character large object (CLOB) or decomposed into a r

This article describes how to copy a DB2 table to a DB2 database through one-way Q replication. We all know that Q replication is a new high-speed technology, I is generally used to move data between databases managed by IBM DB2 Universal Database. It is a highlight of the just-released DB2 Information Integrator Versi

Test environment: slse11.2, 10.4, RedHat5.3, CentOS5 decompress the compressed package gavin: oracledesktar-xzvfdb2exc_975_lnx_x86.tar.gz cdoraclespec Test environment: slse11.2, 10.4, RedHat5.3, CentOS5 decompress the compressed package gavin:/Oracle # tar-xzvf db2exc_975_LNX_x86.tar.gz cd/oracle/spec Test environment: slse11.2, 10.4, RedHat5.3, CentOS5 Decompress the packageGavin:/Oracle # tar-xzvf db2exc_975_LNX_x86.tar.gz Cd/oracle/special_27924_linuxia32_expc/ Graphical interface Insta

Test environment: slse11.2, 10.4, RedHat5.3, CentOS5 Decompress the packageGavin:/Oracle # tar-xzvf db2exc_975_LNX_x86.tar.gz Cd/oracle/special_27924_linuxia32_expc/ Graphical interface Installation ./Db2setup Manually install db ./Db2_install [default path:/opt/ibm/db2/V9.7] If you need to upgrade to the decompressed upgrade package, execute ./InstallFixPack-f level-B/opt/ibm/db2/V9.7 Register /Opt/ibm/

This article mainly tells you about the application experience and precautions of the IBM DB2 database in actual operations _ description of DB2 programming and the situation that your database server is not on the local machine, you need to describe the client connection configuration in "client configuration helper. DB2, IBM

DB2 string is the basic knowledge in DB2 databases. The following section describes DB2 strings for your reference. If you are interested in DB2 strings, take a look. DB2 string is a byte sequence. DB2 strings include CHAR (n)-typ