MySQL: Extracting the Third Index in a String

To locate the index of the third space in a string using MySQL, one approach is to leverage the SUBSTRING_INDEX function. This function enables the extraction of a substring up to a specified delimiter, in this case, the space character.

To isolate the third space, you can utilize two nested SUBSTRING_INDEX calls. The inner function call retrieves the substring from the beginning of the string to the third space, resulting in "AAAA BBBB CCCC." The outer function call then extracts the substring from the third space to the end of the string, yielding "CCCC."

For example, consider the following query:

SELECT SUBSTRING_INDEX(SUBSTRING_INDEX(field, ' ', 3), ' ', -1)
FROM table;

where "field" represents the space-separated string. This query would return the substring corresponding to the third index, effectively extracting "CCCC" from the given list.