When is the completed date of the destroyer with a pennant number h59?
CREATE TABLE table_name_50 (completed VARCHAR, pennant_number VARCHAR)
SELECT completed FROM table_name_50 WHERE pennant_number = "h59"
### Context: CREATE TABLE table_name_50 (completed VARCHAR, pennant_number VARCHAR) ### Question: When is the completed date of the destroyer with a pennant number h59? ### Answer: SELECT completed FROM table_name_50 WHERE pennant_number = "h59"