CREATE TABLE table_17548 ("No. in series" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original air date" CLOB, "Production code" FLOAT)

Who wrote the episode titled 'the wedding anniversary'?
SELECT "Written by" FROM table_17548 WHERE "Title" = 'The Wedding Anniversary'
SELECT "Written by" FROM "table_17548" WHERE "Title" = 'The Wedding Anniversary'