CREATE TABLE domain_keyword (did INT, kid INT)
CREATE TABLE publication (abstract VARCHAR, cid INT, citation_num INT, jid INT, pid INT, reference_num INT, title VARCHAR, year INT)
CREATE TABLE domain_conference (cid INT, did INT)
CREATE TABLE domain_journal (did INT, jid INT)
CREATE TABLE writes (aid INT, pid INT)
CREATE TABLE domain_publication (did INT, pid INT)
CREATE TABLE organization (continent VARCHAR, homepage VARCHAR, name VARCHAR, oid INT)
CREATE TABLE domain_author (aid INT, did INT)
CREATE TABLE journal (homepage VARCHAR, jid INT, name VARCHAR)
CREATE TABLE domain (did INT, name VARCHAR)
CREATE TABLE conference (cid INT, homepage VARCHAR, name VARCHAR)
CREATE TABLE publication_keyword (kid INT, pid INT)
CREATE TABLE author (aid INT, homepage VARCHAR, name VARCHAR, oid INT)
CREATE TABLE keyword (keyword VARCHAR, kid INT)
CREATE TABLE cite (cited INT, citing INT)

return me the paper after 2000 in PVLDB with the most citations .
SELECT publication.title FROM journal, publication WHERE journal.name = 'PVLDB' AND publication.jid = journal.jid AND publication.year > 2000 ORDER BY publication.citation_num DESC LIMIT 1
SELECT "publication"."title" FROM "journal" JOIN "publication" ON "journal"."jid" = "publication"."jid" AND "publication"."year" > 2000 WHERE "journal"."name" = 'PVLDB' ORDER BY "publication"."citation_num" DESC NULLS LAST LIMIT 1