how to substring in mysql

The commonly used string truncation functions in mysql include substring and SUBSTRING_INDEX. substring is the string whose pos starts to be len. This is a bit like the php string truncation function, let's take a look. Usage: SUBSTRING (str, pos,

Usage: SUBSTRING (Str,pos,len)SUBSTRING (str from POS for Len)SUBSTRING (Str,pos)SUBSTRING (str from POS) Alias Substr Intercept string str String that starts at the beginning of the POS length of Len, if you do not set the Len parameter to get

Usage of Mysql string truncation function SUBSTRING description bitsCN.com feels that MySQL string function truncation characters are more powerful than program interception (such as PHP or JAVA), so here is a record, I hope it will be useful to you.

Generally, the entire string is used as the operation object, for example: search for a substring in a substring, obtain a substring, insert a substring at a certain position in the substring, and delete a substring. Generally, the entire string is

When creating the view today, it is very convenient to use string Truncation in MySQL. When creating the view today, it is very convenient to use string Truncation in MySQL. I feel that the string function of MySQL intercepts characters, which is

MySQL string intercept function: Left (), right (), substring (), Substring_index (). There is also mid (), substr (). where mid (), substr () is equivalent to the substring () function, the function of substring () is very powerful and flexible.1.

Generally, the entire string is used as the operation object, for example: search for a substring in a substring, obtain a substring, insert a substring at a certain position in the substring, and delete a substring. The required and sufficient

I feel that the string function of MySQL intercepts characters, which is more powerful than program interceptions (such as PHP or JAVA). So I want to make a record here and hope it will be useful to everyone.Function:1. Extract strings from the left

It feels like MySQL's string function intercepts characters, and is more powerful than a program intercept (like PHP or Java), so make a record here and hope it works for everyone.Function:1. Intercept string from leftLeft (str, length)Description:

1. Intercept string from left Left (str, length) Description: Left (intercepted field, intercept length) Example: Select Left (content,200) as abstract from my_content_t 2, from the right start to intercept the string Right (str, length) Description: