CREATE TABLE table_52769 ("Name" CLOB, "Pennant" CLOB, "Builder" CLOB, "Laid Down" CLOB, "Launched" CLOB, "Commissioned" CLOB)

when was it commissioned when the destroyer was built by scotts, greenock?
SELECT "Commissioned" FROM table_52769 WHERE "Builder" = 'scotts, greenock'
SELECT "Commissioned" FROM "table_52769" WHERE "Builder" = 'scotts, greenock'