mysql table length

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 (

MySQL常用指令，java，php程序员，数据库工程师必备。程序员小冰常用资料整理MySQL common commands (for reference)The most common display commands are:1. Display the list of databases.show databases;2. Display the data table in the library:Use MySQL;Show tables;3, display the

if the setting in an item is varchar (So, of course, the English isSo what about Chinese?Utf-8 in Chinese is 3 bytesSo, does this varchar (50) have only 16 characters to save? No, this is the case with MySQL, but not after 5.0.MySQL varchar (50)

What is the maximum length of int (11), and what is the maximum length of varchar in MySQL?　　What is the maximum length of int (11)?In the SQL statement, int represents the type of field you want to create, int represents an integer, and 11

This article introduces the character length and related parameters of the varchar data type in mysql. For more information, see this article. This article introduces the character length and related parameters of the varchar data type in mysql. For

MySQL creates a table and creates a . frm file to save the table and column definitions. The index is stored in one . MYI (Myindex) and the data is stored in the . MYD (MYData) file extension. First, using Show/describe statement to display the data

Brain Tonic, varchar (n), n refers to the maximum number of characters, not the number of bytes. First, the test instructions:When MySQL builds a table, it encounters a strange phenomenon:Root@localhost: Test10:30:54>CREATETABLETb_test

MySQL study NOTE _ summary of MySQL character type VARCHAR length knowledge bitsCN.com MySQL study NOTE _ summary of MySQL character type VARCHAR length I. VARCHAR storage and row length restrictions 1. in VARCHAR (N), N refers to the length of

When creating a table, MySQL creates a. frm file to save the table and column definitions. Indexes are stored in a file with the. MYI (MYindex) Extension and data is stored in a file with the. MYD (MYData) extension. 1. Use the SHOW/DESCRIBE

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