Table: t_3_liga_manager_changes
Columns: team
outgoing_manager
manner_of_departure
date_of_vacancy
replaced_by
date_of_appointment

Question: What was the manner in which Petrik Sander departed?
SQL: SELECT "manner_of_departure" FROM t_3_liga_manager_changes WHERE "outgoing_manager" = 'Petrik Sander'

Question: What was the manner of departure for Edgar Schmitt of the Stuttgarter Kickers?
SQL: SELECT "manner_of_departure" FROM t_3_liga_manager_changes WHERE "team" = 'Stuttgarter Kickers' AND "outgoing_manager" = 'Edgar Schmitt'

Question: What was the date of appointment when Jürgen Kohler was the outgoing manager?
SQL: SELECT "date_of_appointment" FROM t_3_liga_manager_changes WHERE "outgoing_manager" = 'Jürgen Kohler'

Question: How many appointment dates were recorded when Jürgen Kohler was the replaced by?
SQL: SELECT COUNT("date_of_appointment") FROM t_3_liga_manager_changes WHERE "replaced_by" = 'Jürgen Kohler'