user: Question: What was the production code for the episode with 3.38 million viewers?
Columns: ['No. in series', 'No. in season', 'Title', 'Directedby', 'Writtenby', 'Originalairdate', 'Production code', 'U.S.viewers (million)']
Types: ['real', 'real', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [14.0, 1.0, '"Albification"', 'Guy Ferland', 'Kurt Sutter', 'September8,2009', '2WAB01', '4.29']
SQL:

assistant: SELECT "Production code" FROM "Table" WHERE "U.S.viewers (million)" = '3.38';