Table: pismis24_stars
Columns: star_pismis24
spectral_type
magnitude_m_bol
temperature_k
radius_r
mass_m

Question: What is the smallest possible radius?
SQL: SELECT MIN("radius_r") FROM pismis24_stars

Question: What are all the spectral types for star mismis24-# is 1sw?
SQL: SELECT "spectral_type" FROM pismis24_stars WHERE "star_pismis24" = '1SW'

Question: If a radius is 10, what  is the lowest possible mass?
SQL: SELECT MIN("mass_m") FROM pismis24_stars WHERE "radius_r" = 10