Table: rugby_stats_18
Columns: club
played
won
drawn
lost
points_for
points_against
points_difference
tries_for
tries_against
try_bonus
losing_bonus
points

Question: What is the losing bonus for the team with a point difference of -99?
SQL: SELECT "losing_bonus" FROM rugby_stats_18 WHERE "points_difference" = '-99'

Question: How many games played for teams with 277 points?
SQL: SELECT "played" FROM rugby_stats_18 WHERE "points_for" = '277'

Question: How many games won for teams with 49 tries against?
SQL: SELECT "won" FROM rugby_stats_18 WHERE "tries_against" = '49'

Question: How many teams have 62 tries against?
SQL: SELECT COUNT("points_difference") FROM rugby_stats_18 WHERE "tries_against" = '62'

Question: How many tries for, for club cambrian welfare rfc?
SQL: SELECT "tries_for" FROM rugby_stats_18 WHERE "club" = 'Cambrian Welfare RFC'

Question: How many teams have 21 tries for?
SQL: SELECT COUNT("points_difference") FROM rugby_stats_18 WHERE "tries_for" = '21'