QUERY PLAN
Sort (cost=320.16..320.28 rows=47 width=265)
Sort Key: tbl_users.pinyin1 NULLS FIRST, tbl_users.namecut1 NULLS FIRST, tbl_users.pinyin2 NULLS FIRST, tbl_users.namecut2 NULLS FIRST, tbl_users.pinyin3 NULLS FIRST, tbl_users.namecut3 NULLS FIRST, tbl_users.pinyin4 NULLS FIRST, tbl_users.namecut4 NULLS FIRST
-> Hash Join (cost=311.07..318.86 rows=47 width=265)
Hash Cond: (tbl_users.id = tbl_projects.creator)
-> Seq Scan on tbl_users (cost=0.00..7.41 rows=141 width=265)
-> Hash (cost=310.48..310.48 rows=47 width=4)
-> HashAggregate (cost=309.54..310.01 rows=47 width=4)
Group Key: tbl_projects.creator
-> Seq Scan on tbl_projects (cost=0.00..302.23 rows=2923 width=4)