Replace string using mysql's replace function
I have been researching CMS recently and I need to use MySQL’s replace function when converting data. Here is a brief introduction!
For example, if you want to replace abc in the f1 field in table tb1 with def
UPDATE tb1 SET f1=REPLACE(f1, 'abc', 'def');
REPLACE(str,from_str,to_str)
In the characters All occurrences of the string from_str in the string str are replaced by to_str, and then this string is returned: SELECT REPLACE('www.mysql.com', 'w', 'Ww'); -> ; 'WwWwWw. mysql.com'
This function is multi-byte safe.
Example:
UPDATE `dede_addonarticle` SET body = REPLACE ( body,
'',
'' );
UPDATE `dede_addonarticle` SET body = REPLACE ( body,
'' ,
'' );
UPDATE `dede_addonarticle` SET body = REPLACE ( body,
'
'' );
UPDATE `dede_archives` SET title= REPLACE ( title,
'Dayang News- ',
'' );
UPDATE `dede_addonarticle` SET body = REPLACE ( body,
'../../../../../../',
'http://special.dayoo.com /meal/' );
mysql replace
Usage 1.replace intoreplace into table (id,name) values('1','aa'),('2','bb')
The function of this statement is Insert two records into the table.
2.replace(object, search,replace)
Replace all occurrences of search in object with replaceselect replace('www.163.com','w','Ww')--->WwW wWw.163. com
Example: Replace aa in the name field in the table with bbupdate table set name=replace(name,'aa','bb')
The above is the content of using the replace function of mysql to replace the string, more For more related articles, please pay attention to the PHP Chinese website (www.php.cn)!

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

Detailed explanation of the method of converting int type to string in PHP In PHP development, we often encounter the need to convert int type to string type. This conversion can be achieved in a variety of ways. This article will introduce several common methods in detail, with specific code examples to help readers better understand. 1. Use PHP’s built-in function strval(). PHP provides a built-in function strval() that can convert variables of different types into string types. When we need to convert int type to string type,

How to check if a string starts with a specific character in Golang? When programming in Golang, you often encounter situations where you need to check whether a string begins with a specific character. To meet this requirement, we can use the functions provided by the strings package in Golang to achieve this. Next, we will introduce in detail how to use Golang to check whether a string starts with a specific character, with specific code examples. In Golang, we can use HasPrefix from the strings package

Title: How to determine whether a string ends with a specific character in Golang. In the Go language, sometimes we need to determine whether a string ends with a specific character. This is very common when processing strings. This article will introduce how to use the Go language to implement this function, and provide code examples for your reference. First, let's take a look at how to determine whether a string ends with a specified character in Golang. The characters in a string in Golang can be obtained through indexing, and the length of the string can be

1. First open pycharm and enter the pycharm homepage. 2. Then create a new python script, right-click - click new - click pythonfile. 3. Enter a string, code: s="-". 4. Then you need to repeat the symbols in the string 20 times, code: s1=s*20. 5. Enter the print output code, code: print(s1). 6. Finally run the script and you will see our return value at the bottom: - repeated 20 times.

Methods to solve Chinese garbled characters when converting hexadecimal strings in PHP. In PHP programming, sometimes we encounter situations where we need to convert strings represented by hexadecimal into normal Chinese characters. However, in the process of this conversion, sometimes you will encounter the problem of Chinese garbled characters. This article will provide you with a method to solve the problem of Chinese garbled characters when converting hexadecimal to string in PHP, and give specific code examples. Use the hex2bin() function for hexadecimal conversion. PHP’s built-in hex2bin() function can convert 1

PHP String Matching Tips: Avoid Ambiguous Included Expressions In PHP development, string matching is a common task, usually used to find specific text content or to verify the format of input. However, sometimes we need to avoid using ambiguous inclusion expressions to ensure match accuracy. This article will introduce some techniques to avoid ambiguous inclusion expressions when doing string matching in PHP, and provide specific code examples. Use preg_match() function for exact matching In PHP, you can use preg_mat

PHP String Operation: A Practical Method to Effectively Remove Spaces In PHP development, you often encounter situations where you need to remove spaces from a string. Removing spaces can make the string cleaner and facilitate subsequent data processing and display. This article will introduce several effective and practical methods for removing spaces, and attach specific code examples. Method 1: Use the PHP built-in function trim(). The PHP built-in function trim() can remove spaces at both ends of the string (including spaces, tabs, newlines, etc.). It is very convenient and easy to use.

As a scripting language widely used to develop web applications, PHP has very powerful string processing functions. In daily development, we often encounter operations that require deleting a string, especially the last two characters of the string. This article will introduce two PHP techniques for deleting the last two characters of a string and provide specific code examples. Tip 1: Use the substr function The substr function in PHP is used to return a part of a string. We can easily remove characters by specifying the string and starting position
