What is the least apparent magnitude for all constellations from hydra?
CREATE TABLE table_name_31 (apparent_magnitude INTEGER, constellation VARCHAR)
SELECT MIN(apparent_magnitude) FROM table_name_31 WHERE constellation = "hydra"
### Context: CREATE TABLE table_name_31 (apparent_magnitude INTEGER, constellation VARCHAR) ### Question: What is the least apparent magnitude for all constellations from hydra? ### Answer: SELECT MIN(apparent_magnitude) FROM table_name_31 WHERE constellation = "hydra"