How Can I Extract Substrings from a Delimited String in MySQL?

Extracting Substrings in MySQL Using Delimiters

Problem:
Extract substrings from a string in MySQL that contains multiple values separated by a specific delimiter, such as a comma (,).

Answer:

Although MySQL lacks a built-in split string function, there are alternative approaches to achieve this:

User-Defined Function:
Implement a user-defined function (UDF) that split the string based on the specified delimiter.

Example Query (Verbose):
For demonstration purposes, assume n represents the number of substrings you want to extract:

SELECT SUBSTRING_INDEX(SUBSTRING_INDEX(colors, ',', 1), ',', -1) AS colorfirst,
       SUBSTRING_INDEX(SUBSTRING_INDEX(colors, ',', 2), ',', -1) AS colorsecond
...
       SUBSTRING_INDEX(SUBSTRING_INDEX(colors, ',', n), ',', -1) AS colornth
FROM product;

In this example, the SUBSTRING_INDEX function is used to extract the first substring, then the second, and so on up to the nth substring.

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