Comparing a Particular String with another string (multiple values) via Oracle SQL

Question

SQL to Compare one string among multiple values in another string .

Example : I have 2 string as following. In first_string="B" and in second_string="A,B,C,D,E".

How do i compare first_string against individual value of second_string?

IF the value of the First String is among the values of Second string then i need to proceed with the further actions.

Answer 1

If you need to do this using strings, you can use like :

where ',' || second_string || ',' like '%,' || first_string || ',%'

However, I would suggest that you investigate alternatives to storing such values in strings. Tables (including nested tables) are a better choice. You can also use JSON and similar formats.