Table: battle_saldanha_1796
Columns: ship
guns
commander
complement
notes

Question: What is the sum of complement commander Valkenburg received?
SQL: SELECT COUNT("complement") FROM battle_saldanha_1796 WHERE "commander" = 'valkenburg'

Question: Which commander received complement larger than 240 , guns of 66 and ship of revolutie?
SQL: SELECT "commander" FROM battle_saldanha_1796 WHERE "complement" > 240 AND "guns" = '66' AND "ship" = 'revolutie'