CREATE TABLE "season_20_2012_2013" (
  "series_ep" text,
  "episode" real,
  "segment_a" text,
  "segment_b" text,
  "segment_c" text,
  "segment_d" text
);

Question: What episode number is the episode with a segment on thinning shears?
SQL: SELECT MIN("episode") FROM "season_20_2012_2013" WHERE "segment_a"='Thinning Shears';

Question: Which episode has segment D on custom motorcycle tanks?
SQL: SELECT MIN("episode") FROM "season_20_2012_2013" WHERE "segment_d"='Custom Motorcycle Tanks';

Question: How many segment C are there in the episode where segment D is bicycle tires?
SQL: SELECT COUNT("segment_c") FROM "season_20_2012_2013" WHERE "segment_d"='Bicycle Tires';

Question: What is the first episode number?
SQL: SELECT MIN("episode") FROM "season_20_2012_2013";