sql length of field

Discover sql length of field, include the articles, news, trends, analysis and practical advice about sql length of field on alibabacloud.com

SQL statement used to read the field name, field type, field length, and field attribute description of the SQL server table

Obtain the table field name (SORT ): SELECT. name as field name FROM syscolumns a inner join sysobjects d on. id = d. id and d. xtype = 'U' and d. name <> 'dtproperties' where d. name = 'table name' order by. id,. colorder Expected table field name:

[GO] Analyze the length of MySQL data type "MySQL data field in the role of length and decimals! Familiar with MySQL must see "

You see this article from HTTP://WWW.CNBLOGS.COM/AYANMWReprinted from: http://blog.csdn.net/daydreamingboy/article/details/6310907Analyze the length of the MySQL data typeMySQL has several data types that can limit the "length" of a type, with char (

The counting method for displaying the content with a field type of number and a length greater than 16 bits as a scientific notation from the pl/SQL query field

The counting method of querying a field type from pl/SQL is number and the length is greater than 16 bits is displayed as scientific notation pl/SQL query field type from pl/SQL is number and the length is greater than 16 bits the content is

Modify Table field name/Field Length/field type in mysql

In mysql, we only need to use alter to modify the data table fields. Below I will introduce how to modify the table field name, field length, and field type in mysql, for more information, see. Let's take a look at common methods. The simple Syntax

SQL Modify Field length

Grammar:Alter Table table name >altercolumn field name > new type name (length)Example: If a named T1, the field name F1, the original F1 is varchar (3), now to varchar (10), then you can write:Alter Table Alter column varchar (ten)In general, you

MySQL database field data type, length detailed

Type of a value Storage required for column typesTINYINT 1 bytesSMALLINT 2 bytesMediumint 3 bytesINT 4 bytesINTEGER 4 bytesBIGINT 8 bytesFLOAT (x) 4 if X FLOAT 4 bytesDOUBLE 8 bytesDOUBLE PRECISION 8 bytesReal 8 bytesDECIMAL (m,d) m bytes (d+2, if

Notes for modifying the field length in the production machine

In addition to some restrictions, seeMS-help: // Ms. sqlcc. V9/ms. sqlsvr. v9.zh-CHS/tsqlref9/html/f1745145-182d-4301-a334-18f799d361d1.htm about modifying column restrictions. When modifying columns that can be modified, pay attention to the

SQL statement gets all database names, table names, field names, table fields length

Citation: Http://www.2cto.com/database/201209/155178.htmlSQL statement gets all database names, table names, field names, table fields length gets all the tables in the database select Sysobjects.name as Tablename from sysobjects WHERE xtype = ' U ' 

"Go" SQL Modify field length

Grammar:ALTER TABLE ALTER column new type name (length)Example: If a named T1, the field name F1, the original F1 is varchar (3), now to varchar (10), then you can write:ALTER TABLE T1 ALTER COLUMN F1 varchar (10)In general, you can use this

Oracle modifies the field type and length, and oracle modifies the field

Oracle modifies the field type and length, and oracle modifies the field Modify the field name in Oracle Alter table name rename column old field name to new field name Modify the field type and length in Oracle Alter table name modify Field

Total Pages: 15 1 2 3 4 5 .... 15 Go to: Go

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.