CREATE TABLE table_30811 ("Series #" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original air date" CLOB, "Production code" FLOAT)

What is the production code for 'State of Grace'?
SELECT MAX("Production code") FROM table_30811 WHERE "Title" = 'State of Grace'
SELECT MAX("Production code") FROM "table_30811" WHERE "Title" = 'State of Grace'