Table: rugby_tonga_stats
Columns: player
tries
conv
pens
venue
date

Question: What player played on 04/05/1999 with a conv of 0?
SQL: SELECT "player" FROM rugby_tonga_stats WHERE "conv" = '0' AND "date" = '04/05/1999'

Question: What date did Josh Taumalolo play at Nuku'alofa?
SQL: SELECT "date" FROM rugby_tonga_stats WHERE "venue" = 'nuku''alofa' AND "player" = 'josh taumalolo'