CREATE TABLE "sterilization_operations_by_age_date" (
  "date_of_sterilization" text,
  "age_10_19" real,
  "age_20_29" real,
  "age_30_39" real,
  "age_40_49" real,
  "age_50_59" real,
  "age_unknown" real,
  "total" real
);

Question: Name the least age 30-39 where age 20-29 is 593
SQL: SELECT MIN("age_30_39") FROM "sterilization_operations_by_age_date" WHERE "age_20_29"=593;

Question: Name the least age 40-49
SQL: SELECT MIN("age_40_49") FROM "sterilization_operations_by_age_date";

Question: Name the age 30-39 and age 10-19 380
SQL: SELECT "age_30_39" FROM "sterilization_operations_by_age_date" WHERE "age_10_19"=380;