Category "exists"

Sqlite - Return rows where some values are different

I have a large table a SQLite database of student exam results. Students often resit failed exams and subsequently pass them as shown with student 10001 below.

Flutter OS Error: File exists, errno = 17

MY ERROR - Unhandled Exception: FileSystemException: Cannot open file, path = '/storage/emulated/0/Download/Music/a.png' (OS Error: File exists, errno = 17)

How to quickly check if row exists in PySpark Dataframe?

I have a PySpark dataframe like this: +------+------+ | A| B| +------+------+ | 1| 2| | 1| 3| | 2| 3| | 2| 5| +------+--

PL/pgSQL checking if a row exists

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