CREATE TABLE table_30885 ("Code" TEXT, "Subdivision name  (  be  )   ( BGN/PCGN ) " TEXT, "Subdivision name  (  be  )   ( GOST ) " TEXT, "Subdivision name  (  ru  )   ( BGN/PCGN ) " TEXT, "Subdivision name  (  ru  )   ( GOST ) " TEXT, "Subdivision category" TEXT)

What cods have a subdivision name (RU) of Grodnenskaya Oblast'?
SELECT "Code" FROM table_30885 WHERE "Subdivision name ( ru ) (BGN/PCGN)" = 'Grodnenskaya oblast'
SELECT "Code" FROM "table_30885" WHERE "Subdivision name ( ru ) (BGN/PCGN)" = 'Grodnenskaya oblast'