CREATE TABLE table_name_20 (ast_avg INT, rank VARCHAR, games VARCHAR)

WHAT IS THE SUM OF AST AVG WITH RANK 5 AND GAMES BIGGER THAN 108?
SELECT SUM(ast_avg) FROM table_name_20 WHERE rank = 5 AND games > 108
SELECT SUM("ast_avg") FROM "table_name_20" WHERE "games" > 108 AND "rank" = 5