CREATE TABLE table_23292220_3 (episode VARCHAR, daves_team VARCHAR)

In how many episodes was Dave's team made up of David Walliams and Louis Walsh?
SELECT COUNT(episode) FROM table_23292220_3 WHERE daves_team = "David Walliams and Louis Walsh"
SELECT COUNT("episode") FROM "table_23292220_3" WHERE "David Walliams and Louis Walsh" = "daves_team"