CREATE TABLE table_name_2 (district VARCHAR2, reserved_for___sc___st__none_ VARCHAR2, constituency_number VARCHAR2)

Which district had SC reserved and 169 Constituents?
SELECT district FROM table_name_2 WHERE reserved_for___sc___st__none_ = "sc" AND constituency_number = "169"
SELECT "district" FROM "table_name_2" WHERE "169" = "constituency_number" AND "reserved_for___sc___st__none_" = "sc"