CREATE TABLE table_19778010_5 (high_assists VARCHAR, high_rebounds VARCHAR)

How many different players did the high assists in games where the high rebounds were done by Sales (10)?
SELECT COUNT(high_assists) FROM table_19778010_5 WHERE high_rebounds = "Sales (10)"
SELECT COUNT("high_assists") FROM "table_19778010_5" WHERE "Sales (10)" = "high_rebounds"