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Concept visual
Start at both ends
Search for "3" in string "W3Schools.com", and return position:
SELECT INSTR("W3Schools.com", "3") AS MatchPosition;The INSTR() function returns the position of the first occurrence of a string in another string.
Formula
This function performs a case - insensitive search.string1, string2 )
Required. The string that will be searched string2 Required. The string to search for in string1. If string2 is not found, this function returns 0
From MySQL 4.0
Search for "COM" in string "W3Schools.com", and return position:
SELECT INSTR("W3Schools.com", "COM") AS MatchPosition;Search for "a" in CustomerName column, and return position:
SELECT INSTR(CustomerName, "a")
FROM Customers;❮ MySQL Functions