substring mysql example

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

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

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:

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:

The sense that MySQL's string function intercepts characters is more powerful than using program interception (such as PHP or Java), so make a record here and hope to be useful to everyone. Function: 1. Intercept string from left Left (str, length)

Function:1. Intercept the string from left (str, length)Description: Left (truncated field, intercept length) Example: Select Left (content,200) as abstract from my_content_t2. Intercept string Right (str, length)Description: Right (truncated field,

String function string comparison function if the result length is greater than the maximum value of the max_allowed_packet system variable, the return value of the string value function is NULL. See section 7.5.2 "Adjust server Parameters ". String