Home Database SQL db2 modify field length

db2 modify field length

Sep 03, 2019 am 11:50 AM
db2

db2 modify field length

##db2 Modify field length

alter table TM_CIS_DATA_ITEM_DEF alter ORI_CODE set data type varchar(400);
alter table TM_CIS_DATA_ITEM_DEF alter ORI_NAME set data type varchar(400);
alter table ZZC_ANTIFRAUD_RORT_MASTER alter column RESP_SS_ODE_MSG set data type varchar(500) alter column REMSG set data type varchar(500);
Copy after login

Summary:

alter table table name alter field name set data type field type (length);

Related introduction:

IBM DB2 is a set of relational database management developed by IBM in the United States. System, its main operating environments are UNIX (including IBM's own AIX), Linux, IBM i (formerly known as OS/400), z/OS, and Windows server versions.

DB2 is mainly used in large-scale application systems. It has good scalability, can support everything from mainframe to single-user environments, and can be used on all common server operating system platforms. DB2 provides a high level of data utilization, integrity, security, recoverability, and execution capabilities for small to large-scale applications, with platform-independent basic functions and SQL commands.

DB2 adopts data classification technology, which enables mainframe data to be easily downloaded to LAN database servers, allowing client/server users and LAN-based applications to access mainframe data and localize the database. and remote connection transparency.

DB2 is known for having a very complete query optimizer, whose external connections improve query performance and support multi-task parallel queries. DB2 has excellent network support capabilities. Each subsystem can connect hundreds of thousands of distributed users and activate thousands of active threads at the same time. It is especially suitable for large-scale distributed application systems.

In addition to providing mainstream OS/390 and VM operating systems, as well as medium-sized AS/400 systems, IBM also provides cross-platform (including UNIX-based LINUX, HP-UX, SunSolaris, And SCOUnixWare;

There are also DB2 products for the OS/2 operating system for personal computers, as well as Microsoft's Windows 2000 and its early systems). DB2 databases can be accessed by any application using Microsoft's Open Database Connectivity (ODBC) interface, Java Database Connectivity (JDBC) interface, or CORBA interface proxy.

The above is the detailed content of db2 modify field length. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Hot Topics

Java Tutorial
1664
14
PHP Tutorial
1268
29
C# Tutorial
1246
24
How to view sql database error How to view sql database error Apr 10, 2025 pm 12:09 PM

The methods for viewing SQL database errors are: 1. View error messages directly; 2. Use SHOW ERRORS and SHOW WARNINGS commands; 3. Access the error log; 4. Use error codes to find the cause of the error; 5. Check the database connection and query syntax; 6. Use debugging tools.

How to use sql distinct How to use sql distinct Apr 10, 2025 pm 12:06 PM

The DISTINCT operator is used to exclude duplicate rows in SQL queries and returns only unique values. It is suitable for scenarios such as obtaining a list of unique values, counting the number of unique values, and using it in combination with GROUP BY.

How to query field duplicate data in SQL How to query field duplicate data in SQL Apr 10, 2025 am 09:39 AM

Repeated field data can be queried using SQL's GROUP BY and COUNT() functions, DISTINCT and COUNT() functions, or window function ROW_NUMBER().

How to use the datediff function in sql How to use the datediff function in sql Apr 10, 2025 am 09:33 AM

The DATEDIFF function calculates the difference in the number of days between two dates. Syntax: DATEDIFF(interval, start_date, end_date). interval Indicates interval units (year, month, day, etc.). start_date and end_date are the start and end dates.

How to compare the size of the SQL time attribute How to compare the size of the SQL time attribute Apr 10, 2025 am 11:48 AM

When comparing time attributes in SQL, you can use the following operators: =, <>, <, >, <=, >=, and you need to be careful to compare different types of time attributes. NULL values ​​need to be considered when comparing, and NULL values ​​can be checked using the IS NULL and IS NOT NULL operators.

SQL: The Commands, MySQL: The Engine SQL: The Commands, MySQL: The Engine Apr 15, 2025 am 12:04 AM

SQL commands are divided into five categories in MySQL: DQL, DDL, DML, DCL and TCL, and are used to define, operate and control database data. MySQL processes SQL commands through lexical analysis, syntax analysis, optimization and execution, and uses index and query optimizers to improve performance. Examples of usage include SELECT for data queries and JOIN for multi-table operations. Common errors include syntax, logic, and performance issues, and optimization strategies include using indexes, optimizing queries, and choosing the right storage engine.

How to write a SQL delete statement How to write a SQL delete statement Apr 10, 2025 am 10:33 AM

The SQL delete statement is DELETE FROM, which is used to delete rows from the specified table. The syntax is: DELETE FROM table_name WHERE condition. condition is an optional condition that specifies the row to be deleted. If no conditions are specified, all rows are deleted. Example: DELETE FROM customers WHERE customer_id = 2; Delete line with customer_id of 2.

SQL and MySQL: Understanding the Core Differences SQL and MySQL: Understanding the Core Differences Apr 17, 2025 am 12:03 AM

SQL is a standard language for managing relational databases, while MySQL is a specific database management system. SQL provides a unified syntax and is suitable for a variety of databases; MySQL is lightweight and open source, with stable performance but has bottlenecks in big data processing.

See all articles