:
-- Returns the current system time.
Oracle: select sysdate from dual;
DB2: select current date from sysibm. sysdummy1
-- Returns the next day of the current time (same as the year and month)
Oracle: select sysdate, sysdate + interval '1' day from dual;
DB2: select current
Tags: ext com any hang TCO back mes parameter sofEnvironment preparation1. Create a new table[Email protected]:~> DB2 "CREATE TABLE TB1 (ID int,dt timestamp,name varchar (100))";db20000i the SQL command completed successfully.2. Inserting data[Email protected]:~> DB2 "INSERT into TB1 values (1,current timestamp, ' Jack ')";db20000i the SQL command completed successfully.[Email protected]:~>
1. Character functions:
The characters in SQL Server are case-insensitive.However, the lower and upper functions are common in SQL Server, Oracle, and DB2. For example, select empno, ename, deptno from EMP where upper (ename) = upper ('bucket ');
Example of connection characters:• SQL SERVER: Select 'good '+ 'string'
• ORACLE: Select Concat ('good', 'string') from dual;• DB2: Select Concat ('good', 'string
OpenStack is an excellent cloud operating system, and it is wise for developers, administrators, and operators to have the skills associated with them in their virtual toolkit. Efficient cloud requires an efficient database and can accept multiple databases. But what if you want IBM? DB2 for OpenStack, what should I do? OpenStack does not support DB2 by default.
This short exercise shows how to implement
between midnight and arg.
Monthname (arg): returns the month name of arg.
Dayname (arg): returns the week of arg.
Common examples:
Returns the current system time.
Oracle:selectsysdatefromdual;
DB2: selectcurrentdatefromsysibm.sysdummy1
Returns the next day of the current time)
Oracle:selectsysdate,sysdate+interval'1'day fromdual;
DB2: sele
definition in the mode.
Createin
Mode
Allows users to create objects in the mode.
Dropin
Mode
Allows you to delete objects in the mode.
Information about object-level privileges is stored in the system catalog view. View name issyscat.tabauth,syscat.colauth,syscat.indexauth,syscat.schemaauth,syscat.routineauthAndsyscat.packageauth.
It is also controlled through grant... to, revoke... from.It is found that the select format in
DB2 V9.7 Linux installation record DB2 installation in Linux (RedHat Enterprise Linux 5.4) _ graphical user interfaces can be used or manually installed. First, we will introduce the simplest installation method. 1. Download DB2 9.7 express C from the IBM Website: file name db2exc_9720.lnx_x86.tar.gz ,. 2. decompress and decompress the package in LINUX # gzip-d d
Some similarities and differences between oracle and db2 1. Differences between Table space for indexes Oralce: Create TABLE T1 ............. IN DATA_TACreate Index ........ ON T1 ...... IN INDX_TS DB2: Create TABLE T1 ........ IN DATA_TS index in INDX_TSCreate INDEX ..... ON T1 www.2cto.com 2, RowID Oracle: Oracle has RowID, which is uniquely generated by the database. In the program, the corresponding val
Tags: DB2 replica environment variables"Progressive DB2.DBA system Management, operation and application Case" (New) Reading notes 5DB2 multi-copy installation and default replica switching impact on environment variablesIn this blog post, I have documented in detail the process of installing a DB2 copy with a wizard on windowsxp. It then discusses the nature of
In the process of DB2 development, one of the most important tasks throughout the development process is the maintenance of the database, which is necessary to maintain a large information system; Leave a simple maintenance manual for a rainy year; The following parts of the maintenance order are collected to treat our maintenance engineers and project managers.
* update:2006-06-14
* Memo: Please use "
1, close DB2.
Db2stop or db2stop force.
Write two of the scripts in general, avoiding the use of Db2stop force commands, such as:
Db2stop
Db2stop Force
2, start DB2
Db2start
3, create the database
DB2 Create DB
or DB2 create DB using CodeSet GBK territory CN
4, delete the database
Be careful to do this.
arg.
Monthname (arg): returns the month name of arg.
Dayname (arg): returns the week of arg.
Common examples:
Returns the current system time.
Oracle:selectsysdatefromdual;
DB2:selectcurrentdatefromsysibm.sysdummy1
Returns the next day of the current time)
Oracle:selectsysdate,sysdate+interval'1'dayfromdual;
DB2:selectcurrentdate+1dayfromsysib
Prepare to learn DB2, pick an article to do a primer
DB2 Basics: Use of dates and timesHttp://www.coderarea.net/html/shujukukaifa/DB2/2009/0310/58288.htmlColumn group statistics in DB2Http://www.coderarea.net/html/shujukukaifa/DB2/2009/0310/58285.htmlWhere will the DBA go?Http://www.coderarea.net/html/shujukukaifa/
Tags: des style http io os using Java ar StrongThe command-line processor is the DB2 interface, which best embodies the power of DB2, as well as the simplicity and versatility of DB2. The author makes a detailed exposition of it through examples.0 Reviews:Blair Adamache, DB2 technology development, IBMClose [x]
B
This paper introduces the comparison of DB2 common functions with Oracle in detail
1. Type conversion functions: Decimal, Double, Integer, Smallint,real,hex (ARG),
Date, Time,timestamp,char, varchar
Common examples:
--Convert to String type
Oracle:select To_char (15.5000) from dual;
Db2:select char (15.5000) from sysibm.sysdummy1
--Convert to date time
Oracle:select to_date (' 2008-01-01 ', ' YYYY-M
Understanding how DB2 uses memory can prevent over-allocating memory and help tune memory usage for better performance.This article will teach you the basics of DB2 memory usage, as well as the concept of shared memory and private memory. These contents apply to both 32-bit and 64-bit systems. Although there are some limitations on 64-bit systems, they are unlikely to reach these limits for some time to com
Db2+hadr+tsa High Availability Test--DB2HAICU Configure TSA for automatic failover of faults
Network architecture
Must be configured on the standby node first
[Root@db2-node02 ~]# Su-db2inst2
[Db2inst2@db2-node02 ~]$ DB2 "Get snapshot for database on GHAN"
HADR status
Role = Standby
Status = Peer
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