mysql text length

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MySQL #1170 error (42000) blob/Text Column Used in key specification without a key length

MySQL #1170 error (42000) blob/Text Column Used in key specification without a key length Here is my solution to translating foreign websites. When creating a new table or altering an existing table with primary key, unique constraints and

MySQL's varchar length problem

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)

[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 (

VarChar length setting method in Mysql _mysql

If a varchar is set in an item (50) Well, that's 50 for English. So what about Chinese? Utf-8 Chinese occupies 3 bytes So, is this varchar (50) Only save 16 characters? MySQL varchar (50) in both Chinese and English, there are 50. MySQL5

VARCHAR length in mysql

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

Int (11) What is the maximum length, and what is the maximum length of varchar in MySQL (RPM)

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

MySQL study NOTE _ summary of MySQL character type VARCHAR length _ MySQL

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

What is the maximum length of the varchar type in MySQL?

In MySQL, what is the maximum length of the varchar type? We will find that the varchar length is 65535 for the varchar data type, that is, 65532 bytes of data can be stored, is that true? Let's take a look. 1. Restrictions Field restrictions

The length of varchar in MySQL is described in detail

In the version above MySQL5.0, the length of the varchar data type is supported to 65535, which means that 65,532 bytes of data can be stored, and the start and end bits take up 3 bytes, that is, data stored in a fixed text or blob format in 4.1 or

Detailed description of the data type and length of Mysql database fields

Next, I will provide a summary of mysql Data Types, that is, field types, including type descriptions and string lengths of different data types. I will introduce them below. I. numeric type Storage required for column typesTINYINT 1 byteSMALLINT 2

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