mysql: find rows which have a field that is a substring of “string”

Question

is there a way to write an sql query that finds all rows where the field value is a substring of a given string.

Example:

table names

Name      |      N         


        

Answer 1

If one of Name or Nickname has to be found within the text use

SELECT *
FROM names
WHERE instr("who is Rohit", Name) > 0
   OR instr("who is Rohit", Nickname) > 0

No index can be used for that, so it might take long for large tables.