CREATE TABLE "roster" (
  "name" text,
  "num" real,
  "position" text,
  "height" text,
  "weight_lb" real,
  "year" text,
  "hometown" text,
  "previous_school" text
);

Question: What year was player number 10?
SQL: SELECT "year" FROM "roster" WHERE "num"=10;

Question: How many hometowns are there when Charis Prep was the previous school?
SQL: SELECT COUNT("hometown") FROM "roster" WHERE "previous_school"='Charis Prep';

Question: How many different items appear in the weight column when Pittsburgh, PA is the hometown?
SQL: SELECT COUNT("weight_lb") FROM "roster" WHERE "hometown"='Pittsburgh, PA';