Thank you, I believe this comment saved me a dozen of time

Thanks, it is strange there is not that much information about it on internet(especially the part which argument stands for the base and which for an actual number). May by I searched it in a wrong way.

At the top of the page, next to language selection. It says SQL for language selection, and then the version box to the right of that says PostgresSQL

Thanks! But can you please tell where it mentions that we are solving this task in postgresql? So that in future I can avoid making such mistakes)

patindex doesn't exist in postgresql.

I am trying to solve this kata through patindex but I get an UndefinedFunction: ERROR: function patindex(unknown, text) does not exist.
Can anyone please help me by explaining why does patindex function does not work in this kata?
Thank you!