Table: australia_fed_cup_stats
Columns: record
hard
clay
grass
carpet

Question: Which clay has a Record of 2–0, and a Hard 1–0?
SQL: SELECT "clay" FROM australia_fed_cup_stats WHERE "record" = '2–0' AND "hard" = '1–0'

Question: Which hard has a Clay of 0–0, Grass of 0–0,  Carpet of 0–0, and a Record of 1–0?
SQL: SELECT "hard" FROM australia_fed_cup_stats WHERE "clay" = '0–0' AND "grass" = '0–0' AND "carpet" = '0–0' AND "record" = '1–0'

Question: Which carpet has a Clay of 1–0 and a Hard 1–1?
SQL: SELECT "carpet" FROM australia_fed_cup_stats WHERE "clay" = '1–0' AND "hard" = '1–1'