CREATE TABLE paperdataset (paperid INT, datasetid INT)
CREATE TABLE keyphrase (keyphraseid INT, keyphrasename VARCHAR)
CREATE TABLE field (fieldid INT)
CREATE TABLE paper (paperid INT, title VARCHAR, venueid INT, year INT, numciting INT, numcitedby INT, journalid INT)
CREATE TABLE author (authorid INT, authorname VARCHAR)
CREATE TABLE dataset (datasetid INT, datasetname VARCHAR)
CREATE TABLE venue (venueid INT, venuename VARCHAR)
CREATE TABLE journal (journalid INT, journalname VARCHAR)
CREATE TABLE writes (paperid INT, authorid INT)
CREATE TABLE paperfield (fieldid INT, paperid INT)
CREATE TABLE paperkeyphrase (paperid INT, keyphraseid INT)
CREATE TABLE cite (citingpaperid INT, citedpaperid INT)

which journal did Donald E Knuth publish his last paper ?
SELECT DISTINCT paper.journalid, paper.year FROM author, paper, writes WHERE author.authorname = 'Donald E Knuth' AND writes.authorid = author.authorid AND writes.paperid = paper.paperid GROUP BY paper.journalid, paper.year ORDER BY paper.year DESC
SELECT DISTINCT "paper"."journalid", "paper"."year" FROM "author" JOIN "writes" ON "author"."authorid" = "writes"."authorid" JOIN "paper" ON "paper"."paperid" = "writes"."paperid" WHERE "author"."authorname" = 'Donald E Knuth' GROUP BY "paper"."journalid", "paper"."year" ORDER BY "paper"."year" DESC NULLS LAST