How to replace a specific string in MySQL?

2 years ago
Isabella Edwards
1 minute

In MySQL, you can use the REPLACE function to replace characters at specified positions in a string.具體使用方法如下：

SELECT REPLACE(column_name, 'old_string', 'new_string') FROM table_name;

Among them, column_name is the name of the column where the string to be replaced is located, old_string is the string to be replaced, and new_string is the new string to replace it with.

To replace a specific character at a certain position, you can combine the string functions SUBSTRING and CONCAT. Here are the specific steps:

  1. an extract or portion of text
  2. Merge

Here is an example:

SELECT CONCAT(SUBSTRING(column_name, 1, position - 1), 'new_character', SUBSTRING(column_name, position + 1)) FROM table_name;

Among them, column_name is the name of the column where the string to be replaced is located, position is the position of the character to be replaced in the string, and new_character is the new character to be replaced with.

Please note that the position starts counting from 1, indicating the location of the character to be replaced in the string.

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