CREATE TABLE table_name_1 (round VARCHAR2, position VARCHAR2, pick__number VARCHAR2)

In what Round was a Defensive Tackle Pick # less than 19?
SELECT COUNT(round) FROM table_name_1 WHERE position = "defensive tackle" AND pick__number < 19
SELECT COUNT("round") FROM "table_name_1" WHERE "defensive tackle" = "position" AND "pick__number" < 19