CREATE TABLE paperdataset (paperid NUMBER, datasetid NUMBER)
CREATE TABLE cite (citingpaperid NUMBER, citedpaperid NUMBER)
CREATE TABLE writes (paperid NUMBER, authorid NUMBER)
CREATE TABLE paperkeyphrase (paperid NUMBER, keyphraseid NUMBER)
CREATE TABLE paperfield (fieldid NUMBER, paperid NUMBER)
CREATE TABLE venue (venueid NUMBER, venuename VARCHAR2)
CREATE TABLE paper (paperid NUMBER, title VARCHAR2, venueid NUMBER, year NUMBER, numciting NUMBER, numcitedby NUMBER, journalid NUMBER)
CREATE TABLE dataset (datasetid NUMBER, datasetname VARCHAR2)
CREATE TABLE keyphrase (keyphraseid NUMBER, keyphrasename VARCHAR2)
CREATE TABLE field (fieldid NUMBER)
CREATE TABLE author (authorid NUMBER, authorname VARCHAR2)
CREATE TABLE journal (journalid NUMBER, journalname VARCHAR2)

How many papers has Noah Smith co-authored since 2009 ?
SELECT DISTINCT COUNT(DISTINCT writes.paperid) FROM author, paper, writes WHERE author.authorname <> 'Noah Smith' AND paper.year > 2009 AND writes.authorid = author.authorid AND writes.paperid = paper.paperid AND writes.paperid IN (SELECT WRITESalias1.paperid FROM author AS AUTHORalias1, writes AS WRITESalias1 WHERE AUTHORalias1.authorname LIKE 'Noah Smith' AND WRITESalias1.authorid = AUTHORalias1.authorid)
WITH "_u_0" AS (SELECT "WRITESalias1"."paperid" FROM "author" "AUTHORalias1" JOIN "writes" "WRITESalias1" ON "AUTHORalias1"."authorid" = "WRITESalias1"."authorid" WHERE "AUTHORalias1"."authorname" LIKE 'Noah Smith' GROUP BY "paperid") SELECT DISTINCT COUNT(DISTINCT "writes"."paperid") FROM "author" JOIN "writes" ON "author"."authorid" = "writes"."authorid" LEFT JOIN "_u_0" "_u_0" ON "_u_0"."" = "writes"."paperid" JOIN "paper" ON "paper"."paperid" = "writes"."paperid" AND "paper"."year" > 2009 WHERE "author"."authorname" <> 'Noah Smith' AND NOT "_u_0"."" IS NULL