Question: How many cable channels have callsign cbft-dt?
SQL: SELECT COUNT("Cable channel") FROM "2-1875230-1" 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 "2-1875230-1" WHERE "Call sign" = 'cftu-dt' AND "Broadcast channel" > 29.0;

Question: What is the Digital PSIP for channels over 15 with callsign CFTU-DT?
SQL: SELECT "Digital PSIP" FROM "2-1875230-1" WHERE "Broadcast channel" > 15.0 AND "Call sign" = 'CFTU-DT';