这是我参与11月更文挑战的第1天，活动详情查看：2021最后一次更文挑战
下列查询需要定位到具体对象，加条件即可，表、视图、索引等对象需在对应数据库下执行。
查询所有数据库
SELECT d.datname as "Name",
pg_catalog.pg_get_userbyid(d.datdba) as "Owner",
pg_catalog.pg_encoding_to_char(d.encoding) as "Encoding",
d.datcollate as "Collate",
d.datctype as "Ctype",
pg_catalog.array_to_string(d.datacl, E'\n') AS "Access privileges"
FROM pg_catalog.pg_database d
ORDER BY 1;
Name | Owner | Encoding | Collate | Ctype | Access privileges
-----------+----------+----------+-------------+-------------+-----------------------
chis | postgres | UTF8 | en_US.utf8 | en_US.utf8 |
chisapp | postgres | UTF8 | en_US.utf8 | en_US.utf8 |
postgres | postgres | UTF8 | en_US.UTF-8 | en_US.UTF-8 |
syd | postgres | UTF8 | en_US.UTF-8 | en_US.UTF-8 |
template0 | postgres | UTF8 | en_US.UTF-8 | en_US.UTF-8 | =c/postgres +
| | | | | postgres=CTc/postgres
template1 | postgres | UTF8 | en_US.UTF-8 | en_US.UTF-8 | =c/postgres +
| | | | | postgres=CTc/postgres
test | postgres | UTF8 | en_US.UTF-8 | en_US.UTF-8 |
(7 rows)
复制代码查询所有用户角色
SELECT rolname,
CASE rolcanlogin WHEN 'true' THEN 'user' WHEN 'false' THEN 'role' END AS TYPE
FROM pg_roles
WHERE rolname !~ '^pg_'
ORDER BY 1;
rolname | type
------------------------+------
admin | user
all_read | role
anay_app | user
anay_app_group | role
anay_owner | user
anay_read | user
anay_read_group | role
apply | user
apply_app | user
apply_app_group | role
apply_owner | user
apply_read | user
复制代码查询数据库下所有 schema
SELECT n.nspname AS "Name",
pg_catalog.pg_get_userbyid(n.nspowner) AS "Owner"
FROM pg_catalog.pg_namespace n
WHERE n.nspname !~ '^pg_' AND n.nspname <> 'information_schema'
ORDER BY 1;
Name | Owner
-------------+-------------------
apply | apply_owner
bis | bis_owner
cams | cams_owner
chisbak | postgres
comm | comm_owner
cvms | cvms_owner
ecg | ecg_owner
emis | emis_owner
emr | emr_owner
event | event_owner
ext | ext_owner
finance | finance_owner
………………
………………
………………
复制代码查看数据库下所有 schema 的所有表
SELECT n.nspname as "Schema",
c.relname as "Name",
CASE c.relkind WHEN 'r' THEN 'table' WHEN 'v' THEN 'view' WHEN 'm' THEN 'materialized view' WHEN 'i' THEN 'index' WHEN 'S' THEN 'sequence' WHEN 's' THEN 'special' WHEN 'f' THEN 'foreign table' WHEN 'p' THEN 'partitioned table' WHEN 'I' THEN 'partitioned index' END as "Type",
pg_catalog.pg_get_userbyid(c.relowner) as "Owner"
FROM pg_catalog.pg_class c
LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
WHERE c.relkind IN ('r','p','')
AND n.nspname <> 'pg_catalog'
AND n.nspname <> 'information_schema'
AND n.nspname !~ '^pg_toast'
ORDER BY 1,2;
Schema | Name | Type | Owner
----------+-------------------------------------------------+-------------------+----------------
apply | apply_a | table | apply_owner
apply | apply_b | table | apply_owner
apply | apply_c | table | apply_owner
bis | bis_a | table | bis_owner
bis | bis_b | table | bis_owner
bis | bis_c | table | bis_owner
………………
………………
………………
复制代码查看数据库下所有 schema 的所有视图
SELECT n.nspname as "Schema",
c.relname as "Name",
CASE c.relkind WHEN 'r' THEN 'table' WHEN 'v' THEN 'view' WHEN 'm' THEN 'materialized view' WHEN 'i' THEN 'index' WHEN 'S' THEN 'sequence' WHEN 's' THEN 'special' WHEN 'f' THEN 'foreign table' WHEN 'p' THEN 'partitioned table' WHEN 'I' THEN 'partitioned index' END as "Type",
pg_catalog.pg_get_userbyid(c.relowner) as "Owner"
FROM pg_catalog.pg_class c
LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
WHERE c.relkind IN ('v','m')
AND n.nspname <> 'pg_catalog'
AND n.nspname <> 'information_schema'
AND n.nspname !~ '^pg_toast'
ORDER BY 1,2;
Schema | Name | Type | Owner
----------+------------------------------------------------+-------------------+----------------
hrms | hr_view_a | view | hrms_owner
hrms | hr_view_b | view | hrms_owner
lis | lis_v_a | view | lis_owner
lis | lis_v_b | view | lis_owner
lis | lis_v_c | view | lis_owner
mr | v_mr_a | view | mr_owner
mr | v_mr_b | view | mr_owner
mr | v_mr_c | view | mr_owner
v | v_a | view | v_owner
………………
………………
………………
复制代码查看数据库下所有索引
SELECT n.nspname as "Schema",
c.relname as "Name",
CASE c.relkind WHEN 'r' THEN 'table' WHEN 'v' THEN 'view' WHEN 'm' THEN 'materialized view' WHEN 'i' THEN 'index' WHEN 'S' THEN 'sequence' WHEN 's' THEN 'special' WHEN 'f' THEN 'foreign table' WHEN 'p' THEN 'partitioned table' WHEN 'I' THEN 'partitioned index' END as "Type",
pg_catalog.pg_get_userbyid(c.relowner) as "Owner",
c2.relname as "Table"
FROM pg_catalog.pg_class c
LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
LEFT JOIN pg_catalog.pg_index i ON i.indexrelid = c.oid
LEFT JOIN pg_catalog.pg_class c2 ON i.indrelid = c2.oid
WHERE c.relkind IN ('i','I','')
AND n.nspname <> 'pg_catalog'
AND n.nspname <> 'information_schema'
AND n.nspname !~ '^pg_toast'
ORDER BY 1,2;
Schema | Name | Type | Owner | Table
--------+------------------------------------------+------------+----------------+-----------------------------------
apply | apply_pk1 | index | apply_owner | apply_1
apply | apply_pk2 | index | apply_owner | apply_2
apply | apply_pk3 | index | apply_owner | apply_3
bis | apply_idx1 | index | bis_owner | apply_a
bis | apply_idx2 | index | bis_owner | apply_b
bis | apply_idx3 | index | bis_owner | apply_c
………………
………………
………………
复制代码