Table: canadian_tv_schedule_2
Columns: 7_00
7_30
8_00
8_30
9_00
9_30
10_00

Question: What is on at 8:00 before the 9:00 showing of Chuck?
SQL: SELECT "8_00" FROM canadian_tv_schedule_2 WHERE "9_00" = 'chuck'

Question: What show comes on at 9:00 on the channel that shows the Insider at 7:00?
SQL: SELECT "9_00" FROM canadian_tv_schedule_2 WHERE "7_00" = 'the insider'

Question: On the channel with The Biggest loser at 8:00, what's on at 7:30?
SQL: SELECT "7_30" FROM canadian_tv_schedule_2 WHERE "8_00" = 'the biggest loser'

Question: What's on at 7:30 before the 9:00 showing of the Tudors?
SQL: SELECT "7_30" FROM canadian_tv_schedule_2 WHERE "9_00" = 'the tudors'

Question: If Gossip Girl is on at 7:30, what shows at 9:00?
SQL: SELECT "9_00" FROM canadian_tv_schedule_2 WHERE "7_30" = 'gossip girl'