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TINYINT, SMALLINT, MEDIUMINT, INT, INTEGER, BIGINT; text, longtext, mediumtext, ENUM, SET, and other field types, tinyintmediumint Http://www.path8.net/tn/archives/951 MySQL supports a large number of column types, which can be divided into three

MySQL Data Types Note: The following content is applicable to MySQL and later versions. MySQL has many data types. Selecting the correct data type is crucial for achieving high performance. This article is based on some blogs I have seen on the

Print? Quicksum data consists of only 26 upper-case letters and spaces, and must start and end with an upper-case letter. In addition, Quicksum data can be any combination, including consecutive spaces. Quicksum is the sum of the product of each

The following is an automatic backup method that I have confirmed is available. For more information, see. The following is an automatic backup method that I have confirmed is available. For more information, see. The following is an automatic

$ cat models/user.py#!/usr/bin/env python# encoding: utf-8__author__ =  ' Andy ' From extensions import dbfrom datetime import datetimeclass user (db. Model):    __tablename__ =  ' user '     _id = db. Column (db.

Instance Calculates the Levenshtein distance between two strings: ", Echo Levenshtein ("Hello World", "Ello World", 10,20,30);? > Definition and usage The Levenshtein () function returns the Levenshtein distance between two strings. Levenshtein

Detailed description of each mysql field bitsCN.com Mysql fields Description of the text, longtext, and mediumtext fields in mysql MySQL supports a large number of column types, which can be divided into three types: number type, date and time

Mysql field type summary --- field type summary table original Web site: http://kimbriggs.com/computers/computer-notes/mysql-notes/mysql-data-types-50.file Type {storage} Name Range Attributes Default Numeric{1 byte}

《Mysql##(2 2 2014-088文 download www.linuxidc.comlinux2014-0398821.htm 1, mysql has the most identifiers MySQL authoritative guide (original book version 2nd) Clear Chinese scan version PDF download http://www.linuxidc.com/Linux/2014-03/98821.htm 1,

Extjs Form Verification// Put it in function () {} of onreadyExt. quicktips. INIT (); // provides the prompt information function for the component. The main prompt information of form is the error message verified by the client.Ext. Form. Field.

Today, the planning of Students report program triggers have a bug, the past looked at the log, prompting the data document configuration problems. Thought the problem is not big, modify the table content can be, when I read the data sheet, the sad

Several problems encountered during PHPExcel usage recently I have been engaged in PHPExcel several times and encountered several problems during the process, the common usage of PHPExcel and the problems I encountered and solutions are summarized

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

During the design of MySQL database fields today, the prompt is always prompted during table creation.MySQL:Error 1071 (42000): specified key was too long; max key length is 767 bytes.At first, I didn't figure out why, because by default, MySQL

When posting a message or Weibo, there are two ways to limit the number of input words, each of which is described in two ways:The first one: a Chinese character is counted as one, and two letters or symbols are counted as one.Using ASCII encoding

Java Web knowledge point Summary 1. Java Web knowledge point summary Common status codes and their meanings Some common HTTP status codes are: 200 -- the server returns the webpage successfully 400 -- the server does not understand the request

Explain the meaning of M in MySQL Data Type int (M), mysqlint Introduction The integer types in the MySQL data type is a bit strange. You may see int data types such as int (3), int (4), and int (8. When I first came into contact with MySQL, I

meta tags are used to describe an HTML page document properties, such as the page's author, date, page keywords, refresh, page level settings, etc., is the most basic meta-information in the document, this article is the meta-tag learning summary,

 meta tags are used to describe an HTML page document properties, such as the page's author, date, page keywords, refresh, page level settings, etc., is the most basic meta-information in the document, this article is the meta-tag learning summary,

What are the MySQL field types? The following describes the MySQL Field Types for your reference. The most important thing about the table structure is the field type and field constraints. Today, let's take a brief look at the MySQL field type.