CREATE TABLE table_29770377_1 (train_number VARCHAR, route_via VARCHAR)

How many trains are there for the route via trivandrum, ernakulam, newdelhi?
SELECT COUNT(train_number) FROM table_29770377_1 WHERE route_via = "Trivandrum, Ernakulam, NewDelhi"
SELECT COUNT("train_number") FROM "table_29770377_1" WHERE "Trivandrum, Ernakulam, NewDelhi" = "route_via"