CaseExpr.when(condition: Union[Column, str], value: Union[Column, None, bool, int, float, str, bytearray, Decimal, date, datetime, time, bytes, NaTType, float64, list, tuple, dict]) CaseExpr[source]

Appends one more WHEN condition to the CASE expression.

  • condition – A Column expression or SQL text representing the specified condition.

  • value – A Column expression or a literal value, which will be returned if condition is true.