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1、查看當(dāng)前數(shù)據(jù)庫(kù)版本
mydb=#?select?version(); ?????????????????????????????????????????????????version????????????????????????????????????????????????? --------------------------------------------------------------------------------------------------------- ?PostgreSQL?12.0?on?x86_64-pc-linux-gnu,?compiled?by?gcc?(GCC)?4.8.5?20150623?(Red?Hat?4.8.5-39),?64-bit
2、with子句,查看role和組的關(guān)系
with temp as?
(select? a.rolname,a.rolsuper,m.member from? pg_authid a join pg_auth_members m?
on a.oid=m.roleid)
select temp.rolname,temp.rolsuper,s.rolname as groupname from temp join pg_authid s?
on temp.member = s.oid;
mydb=#?with?temp?as? mydb-#?(select??a.rolname,a.rolsuper,m.member?from??pg_authid?a?join?pg_auth_members?m? mydb(#?on?a.oid=m.roleid) mydb-#?select?temp.rolname,temp.rolsuper,s.rolname?as?groupname?from?temp?join?pg_authid?s? mydb-#?on?temp.member?=?s.oid; ???????rolname????????|?rolsuper?|?groupname?? ----------------------+----------+------------ ?pg_read_all_settings?|?f????????|?pg_monitor ?pg_read_all_stats????|?f????????|?pg_monitor ?pg_stat_scan_tables??|?f????????|?pg_monitor
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