Question

I didn’t find it on their doc http://www.sqlite.org/lang_corefunc.html

So just want to get confirm or options here.

Answer 1

From Instr, Locate or Splite it seems no, but you can implement your own

I think you will have to write your
own user defined function to do this.
The SQL standard defines a POSITION()
function that returns the position of
one string within another, but sqlite
doesn’t implement it. It should be
fairly simple to provide your own
function to do this. You can look at
the standard functions in func.c for
some examples of using the custom
function API routines (the same
routines are used to define all the
standard functions; sum, round,
substr, etc.).