Table: montreal_media
Columns: call_sign
broadcast_channel
digital_psip
cable_channel
network

Question: How many cable channels have callsign CBFT-DT?
SQL: SELECT COUNT("cable_channel") FROM montreal_media WHERE "call_sign" = 'cbft-dt'

Question: What is the lowest Digital PSIP for channels over 29 with callsign CFTU-DT?
SQL: SELECT MIN("digital_psip") FROM montreal_media WHERE "call_sign" = 'cftu-dt' AND "broadcast_channel" > 29

Question: What is the Digital PSIP for channels over 15 with callsign CFTU-DT?
SQL: SELECT "digital_psip" FROM montreal_media WHERE "broadcast_channel" > 15 AND "call_sign" = 'cftu-dt'