Table: manager_changes_2b
Columns: team
outgoing_manager
manner_of_departure
date_of_vacancy
replaced_by
date_of_appointment
position_in_table

Question: Name the date of appointment for petrik sander
SQL: SELECT "date_of_appointment" FROM manager_changes_2b WHERE "replaced_by" = 'Petrik Sander'

Question: Name the date of appointment for sacked and 14th position replaced by marco kostmann
SQL: SELECT "date_of_appointment" FROM manager_changes_2b WHERE "manner_of_departure" = 'Sacked' AND "position_in_table" = '14th' AND "replaced_by" = 'Marco Kostmann'