I have a PySpark dataframe like this: +------+------+ | A| B| +------+------+ | 1| 2| | 1| 3| | 2| 3| | 2| 5| +------+--
I'm writing a function in PL/pgSQL, and I'm looking for the simplest way to check if a row exists. Right now I'm SELECTing an integer into a boolean, which does