/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/ is in calendarserver 5.2+dfsg-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/oracle-dialect/
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/oracle-dialect/upgrade_from_10_to_11.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/oracle-dialect/upgrade_from_11_to_12.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/oracle-dialect/upgrade_from_12_to_13.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/oracle-dialect/upgrade_from_13_to_14.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/oracle-dialect/upgrade_from_14_to_15.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/oracle-dialect/upgrade_from_15_to_16.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/oracle-dialect/upgrade_from_16_to_17.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/oracle-dialect/upgrade_from_17_to_18.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/oracle-dialect/upgrade_from_18_to_19.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/oracle-dialect/upgrade_from_19_to_20.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/oracle-dialect/upgrade_from_20_to_21.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/oracle-dialect/upgrade_from_21_to_22.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/oracle-dialect/upgrade_from_22_to_23.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/oracle-dialect/upgrade_from_23_to_24.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/oracle-dialect/upgrade_from_24_to_25.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/oracle-dialect/upgrade_from_25_to_26.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/oracle-dialect/upgrade_from_26_to_27.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/oracle-dialect/upgrade_from_27_to_28.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/oracle-dialect/upgrade_from_3_to_4.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/oracle-dialect/upgrade_from_4_to_5.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/oracle-dialect/upgrade_from_5_to_6.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/oracle-dialect/upgrade_from_6_to_7.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/oracle-dialect/upgrade_from_7_to_8.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/oracle-dialect/upgrade_from_8_to_9.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/oracle-dialect/upgrade_from_9_to_10.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/postgres-dialect/
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/postgres-dialect/upgrade_from_10_to_11.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/postgres-dialect/upgrade_from_11_to_12.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/postgres-dialect/upgrade_from_12_to_13.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/postgres-dialect/upgrade_from_13_to_14.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/postgres-dialect/upgrade_from_14_to_15.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/postgres-dialect/upgrade_from_15_to_16.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/postgres-dialect/upgrade_from_16_to_17.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/postgres-dialect/upgrade_from_17_to_18.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/postgres-dialect/upgrade_from_18_to_19.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/postgres-dialect/upgrade_from_19_to_20.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/postgres-dialect/upgrade_from_20_to_21.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/postgres-dialect/upgrade_from_21_to_22.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/postgres-dialect/upgrade_from_22_to_23.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/postgres-dialect/upgrade_from_23_to_24.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/postgres-dialect/upgrade_from_24_to_25.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/postgres-dialect/upgrade_from_25_to_26.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/postgres-dialect/upgrade_from_26_to_27.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/postgres-dialect/upgrade_from_27_to_28.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/postgres-dialect/upgrade_from_3_to_4.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/postgres-dialect/upgrade_from_4_to_5.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/postgres-dialect/upgrade_from_5_to_6.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/postgres-dialect/upgrade_from_6_to_7.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/postgres-dialect/upgrade_from_7_to_8.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/postgres-dialect/upgrade_from_8_to_9.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/postgres-dialect/upgrade_from_9_to_10.sql
/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/upgrade_template.sql