QUERY PLAN
Sort (cost=197.57..197.69 rows=49 width=267)
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=188.37..196.20 rows=49 width=267)
Hash Cond: (tbl_users.id = tbl_projects.creator)
-> Seq Scan on tbl_users (cost=0.00..7.44 rows=144 width=267)
-> Hash (cost=187.76..187.76 rows=49 width=4)
-> HashAggregate (cost=186.78..187.27 rows=49 width=4)
Group Key: tbl_projects.creator
-> Seq Scan on tbl_projects (cost=0.00..178.82 rows=3182 width=4)