Fading Coder

To identify an employee's primary department, you must handle two distinct scenarios based on the input data: If an employee is assigned to multiple departments, retrieve the record where primary_flag is set to 'Y'. If an employee is assigned to only one department, retrieve that record regardless o...

Implementing Rank Functions in ClickHouse with Array Functions ClickHouse enables implementing rank functions commonly found in SQL databases using specialized array functions. The main functions discussed are: arrayEnumerate arrayEnumerateDense arrayEnumerateUniq These funcitons return indices corr...