the help of commands or other software related to the operating system. For example, the Excle software is used for change. The second is to use the format option during the import so that the import tool can recognize this delimiter. For example, you can add a COLDEL: clause to the Import Statement to tell the database system that the column separator currently used is not a comma, but a colon. In this way, you can smoothly import
Tags: share for me install JDK LAN NSF MYSQ process target primary key auto-increment from:https://my.oschina.net/simpleton/blog/525675 First, what is ETL ETL, an abbreviation of English extract-transform-load, is used to describe the process of extracting data from the source (Extract), converting (Transform), loading (load) to the destination. The term ETL is more commonly used in data warehouse, but its
operation is very large, it will lead to competition for logs, resulting in very slow operations. If you insert, update, or delete a table without logs, the log is rarely used. However, if the operation fails, the table cannot be rolled back. Therefore, the consistency is not guaranteed and the table can only be deleted and rebuilt.
4) Create Table-level locks for tables to minimize the number of locks. Because the maximum number of database locks is limited, and each lock occupies a certain am
import efficiency. The database administrator can set the n value based on the number of records. Generally, this value is not too large. However, if it is too small, it will also affect the data import performance. If the data volume is large, I usually set this value to 500. However, the database administrator must select a proper value based on experience.
4. Use the
Lakes 100 Midwest Chicago51 Plains 140 Midwest Dallas66 Pacific 270 Western San Francisco84 Mountain 290 Western Denver
2. DEL -- specifies an ASCII file, which is also an ASCII transfer stream. The rows in the data stream are separated by line delimiters, and the column values in the rows are separated by column delimiters. File Type modifiers can be used to modify the default values of these delimiters. For example:
10, "Head Office", 160, "initial
This article examines the metadata of IBM DB2 Universal Database to dynamically build views and forms, including how to dynamically generate a new clx form and convert the form stream to Delphi. PAS and. XFM files and add them to the kylix and Delphi clx projects.
IntroductionIn the previous article, I checked the metadata of IBM DB2 Universal Database (UDB) to dynamically build views and forms. I used Bor
process and the need of enterprise and internal information exchange, XML, as a standardized data storage format, is facing a huge increase in data volume. In fact, every industry is implementing XML data standards, and the new Microsoft Office software will also store documents in XML
DB2 in the so-called data movement, including: 1. Imports of data (import) 2. Export of data (exports) 3. Loading (load) of the data. Imports and loads use DB2 's related commands to save data
An example of DB2 data recovery: SQL0928N
The environment is AIX 6.1 and DB2 9.7.0.7.First, check whether the db2 master process exists.Ps-ef | grep db2sysIf the database does not exist, use db2start to open the database.The backup media is a cold backup data source,Cd to th
The following articles mainly teach you how to correctly master DB2 data movement. I saw DB2 data movement materials on the relevant website two days ago. I thought it was good and I would like to share them with you, the following is a detailed description of the main content of the article. I hope you will have a bet
DML (Data Manipulation Language commands) Data Manipulation Language; DDL (Data Definition Language commands) Data Definition Language; TCC (Transaction Control commands) Transaction Control Language; SCC (System Control commands) system Control Language
DB2 database usage
The DB2 big data table data deletion method is slow and unacceptable when the table data volume is deleted from table_name in millions. In addition, delete is more unacceptable when deleting multiple tables. Find the method and find it very fast. The procedure is as follows: www.2cto.com (1). Create a new file named [e
need to create a symbolic connection first, and the ldd command should be able to solve all the dependency problems.
Enter/usr/lib and enter the following command:
$cd/usr/lib
$ln-s/opt/ibm/WSII/odbc/lib/libodbcinst.solibodbcinst.so
$ln-s/opt/ibm/WSII/odbc/lib/libVMicu23.solibVMicu23.so
SQL Server connection test
Go to the/opt/ibm/WSII/odbc/example directory and run./example.
Specify your $ HOME/odbc. the data source name used in the INI
The following article describes how to correctly parse the DB2 data movement method and import and load data using commands related to the DB2 database in actual operations, save the data in a certain format file to the detailed d
The so-called data movement in the DB2 includes:
1. Imports of data (import)
2. Exports of data (export)
3. Loading (load) of data
Import and mount are all using DB2 's related commands to save
This article mainly introduces the data movement function of the IBM DB2 database, this section describes how to use commands of the DB2 database to import and load data from files in a certain format to tables in the database.
The so-called
The DB2 tutorial you're looking at is using an XQuery query to DB2 XML data.
about XQueryXQuery differs in many key ways from SQL, largely because the two languages are designed for two data models with different characteristics. XML documents contain hierarchies and have their intrinsic order. The tabular
This article mainly tells you how to easily master the actual operation steps of DB2 data movement. The following is a detailed description of the main content of DB2 data movement, I hope you will have a better understanding of it after browsing. To transfer data between di
The DB2 tutorial is: use SQL to query XML data in DB2 9.
Although the hybrid architecture of DB2 is quite different from that of earlier versions, it is not difficult to use its new XML features. If you are familiar with SQL, you can quickly convert this skill to processing local XML
We describe how to export LOB data using the DB2 table operation technique in the hypothetical way. Suppose there is a table of employee information (USER_INFO. The table contains three fields: employee ID, employee name, and employee ID card copy. Because the size of the employee ID card copy is relatively large, the LOB data type is used in the database.
For ex
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