CREATE TABLE "season_18_2011_2012" (
  "series_ep" text,
  "episode" real,
  "segment_a" text,
  "segment_b" text,
  "segment_c" text,
  "segment_d" text
);

Question: Name the number of episods for segment c being s oyster
SQL: SELECT COUNT("episode") FROM "season_18_2011_2012" WHERE "segment_c"='s Oyster';

Question: Name the least episode for fibre cement siding
SQL: SELECT MIN("episode") FROM "season_18_2011_2012" WHERE "segment_d"='Fibre Cement Siding';

Question: Name the segment b for 226 episode
SQL: SELECT "segment_b" FROM "season_18_2011_2012" WHERE "episode"=226;

Question: Name the number of sement d for solar water heaters 
SQL: SELECT COUNT("segment_d") FROM "season_18_2011_2012" WHERE "segment_b"='Solar Water Heaters';

Question: Name the segment d for s cufflink
SQL: SELECT "segment_d" FROM "season_18_2011_2012" WHERE "segment_a"='s Cufflink';