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pyspark - Placeholders in a FROM Clause in SQL query. like in Python string Formating

I am new to coding and would like to know where "0" holding the database name in {0} is supposed to be in this code:

select * , RANK() OVER (ORDER BY CAST(batchid AS INT) DESC) AS RNK FROM {0}.tablename

In python, it is always in the .format(....) but this is a select statement and this code is part of an urge pyspark code. I couldn't find any .format() in the code.

The only think I could think of is that at the beginning of the query there is this:

"K4" | "dictionary_name" | "spark" | "with cte as aselect...... + 813 lines of codes then

" | "pulls the data from databasename on batchid condition"

Could "K4" I "dictionary_name" I be the elements that passed as {0} and {1} ???

question from:https://stackoverflow.com/questions/65860378/placeholders-in-a-from-clause-in-sql-query-like-in-python-string-formating

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