CREATE TABLE table_21626 ("Series #" FLOAT, "Season #" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original air date" CLOB)

How many titles are given for the episode directed by Joanna Kerns?
SELECT COUNT("Title") FROM table_21626 WHERE "Directed by" = 'Joanna Kerns'
SELECT COUNT("Title") FROM "table_21626" WHERE "Directed by" = 'Joanna Kerns'