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PG-161: Miscellaneous small issues.

pull/70/head
Ibrar Ahmed 2021-01-12 15:52:20 +00:00
parent 722435ec98 29fcf05fef
commit b5313cf2ff
2 changed files with 64 additions and 88 deletions
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26
README.md
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@ -82,20 +82,18 @@ CREATE EXTENSION
```sql ```sql
-- Select some of the query information, like client_ip, username and application_name etc. -- Select some of the query information, like client_ip, username and application_name etc.
SELECT application_name, userid::regrole AS user_name, datname AS database_name, substr(query,0, 50) AS query, calls, client_ip postgres=# SELECT application_name, userid AS user_name, datname AS database_name, substr(query,0, 50) AS query, calls, client_ip
FROM pg_stat_monitor, pg_database FROM pg_stat_monitor;
WHERE dbid = oid; application_name | user_name | database_name | query | calls | client_ip
------------------+-----------+---------------+---------------------------------------------------+-------+-----------
application_name | user_name | database_name | query | calls | client_ip psql | vagrant | postgres | SELECT application_name, userid::regrole AS user_ | 1 | 127.0.0.1
-------------------+-----------+---------------+---------------------------------------------------+-------+----------- psql | vagrant | postgres | SELECT application_name, userid AS user_name, dat | 3 | 127.0.0.1
psql | vagrant | postgres | SELECT elevel, sqlcode, message from pg_stat_moni | 1 | 127.0.0.1 psql | vagrant | postgres | SELECT application_name, userid AS user_name, dat | 1 | 127.0.0.1
psql | vagrant | postgres | SELECT c.relchecks, c.relkind, c.relhasindex, c.r | 1 | 127.0.0.1 psql | vagrant | postgres | SELECT application_name, userid AS user_name, dat | 8 | 127.0.0.1
pg_cron scheduler | vagrant | postgres | update cron.job_run_details set status = $1, retu | 1 | 127.0.0.1 psql | vagrant | postgres | SELECT bucket, substr(query,$1, $2) AS query, cmd | 1 | 127.0.0.1
pgbench | vagrant | postgres | vacuum analyze pgbench_accounts | 1 | 10.0.2.15 (5 rows)
pgbench | vagrant | postgres | alter table pgbench_branches add primary key (bid | 1 | 10.0.2.15
psql | vagrant | postgres | SELECT pg_catalog.quote_ident(c.relname) FROM pg_ | 1 | 127.0.0.1
psql | vagrant | postgres | SELECT decode_error_level(elevel), sqlcode, messa | 2 | 127.0.0.1
(37 rows)
``` ```
```sql ```sql

126
docs/USER_GUIDE.md
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@ -152,56 +152,26 @@ bucket | bucket_start_time |
**`calls`**: Number of calls of that particular query. **`calls`**: Number of calls of that particular query.
##### Example 1: Shows the userid, dbid, unique queryid hash, query, and the total number of calls of that query. ##### Example 1: Shows the usename, database name, unique queryid hash, query, and the total number of calls of that query.
```sql ```sql
SELECT userid,  dbid, queryid, substr(query,0, 50) AS query, calls FROM pg_stat_monitor; postgres=# SELECT userid, datname, queryid, substr(query,0, 50) AS query, calls FROM pg_stat_monitor;
 userid | dbid  |     queryid      |                       query                       | calls userid | datname | queryid | query | calls
--------+-------+------------------+---------------------------------------------------+------- ---------+----------+------------------+---------------------------------------------------+-------
     10 | 12709 | 214646CE6F9B1A85 | BEGIN                                             |  1577 vagrant | postgres | 939C2F56E1F6A174 | END | 561
     10 | 12709 | 8867FEEB8A5388AC | vacuum pgbench_branches                           |     1 vagrant | postgres | 2A4437C4905E0E23 | SELECT abalance FROM pgbench_accounts WHERE aid = | 561
     10 | 12709 | F47D95C9DF863E43 | UPDATE pgbench_branches SET bbalance = bbalance + |  1577 vagrant | postgres | 4EE9ED0CDF143477 | SELECT userid, datname, queryid, substr(query,$1 | 1
     10 | 12709 | 2FE0A6ABDC20623  | select substr(query,$1, $2) as query, cmd_type fr |     7 vagrant | postgres | 8867FEEB8A5388AC | vacuum pgbench_branches | 1
     10 | 12709 | A83503D3E1F99139 | select userid,  dbid, queryid, substr(query,$1, $ |     1 vagrant | postgres | 41D1168FB0733CAB | select count(*) from pgbench_branches | 1
     10 | 12709 | D4B1243AC3268B9B | select count(*) from pgbench_branches             |     1 vagrant | postgres | E5A889A8FF37C2B1 | UPDATE pgbench_accounts SET abalance = abalance + | 561
     10 | 12709 | 2FE0A6ABDC20623  | select substr(query,$1, $2) as query, cmd_type fr |     1 vagrant | postgres | 4876BBA9A8FCFCF9 | truncate pgbench_history | 1
     10 | 12709 | 1D9BDBBCFB89F096 | UPDATE pgbench_accounts SET abalance = abalance + |  1577 vagrant | postgres | 22B76AE84689E4DC | INSERT INTO pgbench_history (tid, bid, aid, delta | 561
     10 | 12709 | 15343084284782B  | update test SET a = $1                            |     2 vagrant | postgres | F6DA9838660825CA | vacuum pgbench_tellers | 1
     10 | 12709 | 939C2F56E1F6A174 | END                                               |  1577 vagrant | postgres | 214646CE6F9B1A85 | BEGIN | 561
      1 | 12709 | DAE6D269D27F2EC4 | SELECT FOR UPDATE test SET a = 1;                 |     1 vagrant | postgres | 27462943E814C5B5 | UPDATE pgbench_tellers SET tbalance = tbalance + | 561
     10 | 12709 | 2B50C2406BFAC907 | INSERT INTO pgbench_history (tid, bid, aid, delta |  1577 vagrant | postgres | 4F66D46F3D4151E | SELECT userid, dbid, queryid, substr(query,0, 50 | 1
     10 | 12709 | F6DA9838660825CA | vacuum pgbench_tellers                            |     1 vagrant | postgres | 6A02C123488B95DB | UPDATE pgbench_branches SET bbalance = bbalance + | 561
     10 | 12709 | 3AFB8B2452721F9  | SELECT a from test for update                     |     1 (13 rows)
     10 | 12709 | A5CD0AF80D28363  | SELECT abalance FROM pgbench_accounts WHERE aid = |  1577
     10 | 12709 | E445DD36B9189C53 | UPDATE pgbench_tellers SET tbalance = tbalance +  |  1577
     10 | 12709 | 4876BBA9A8FCFCF9 | truncate pgbench_history                          |     1
     10 | 12709 | D3C2299FD9E7348C | select userid,  dbid, queryid, query, calls from  |     1
(18 rows)
```
##### Example 2: Shows different usernames for the query.
```
SELECT userid::regrole, datname, substr(query,0, 50) AS query, calls from pg_stat_monitor, pg_database WHERE dbid = oid;
  userid  | datname  |                       query                       | calls
----------+----------+---------------------------------------------------+-------
 vagrant  | postgres | select userid::regrole, datname, substr(query,$1, |     1
 vagrant  | test_db  | insert into bar values($1)                        |     1
 vagrant  | postgres | insert into bar values($1)                        |     1
 vagrant  | test_db  | select * from bar                                 |     1
 postgres | postgres | insert into bar values($1)                        |     1
(5 rows)
```
##### Example 3: Shows the different databases involved in the queries.
```
SELECT userid::regrole, datname, substr(query,0, 50) as query, calls from pg_stat_monitor, pg_database WHERE dbid = oid;
 userid  | datname  |                       query                       | calls
---------+----------+---------------------------------------------------+-------
 vagrant | postgres | select userid::regrole, datname, substr(query,$1, |     0
 vagrant | test_db  | insert into bar values($1)                        |     1
 vagrant | test_db  | select * from bar                                 |     1
(3 rows)
``` ```
##### Example 4: Shows the connected application_name. ##### Example 4: Shows the connected application_name.
@ -307,16 +277,22 @@ There are 10 timebase buckets of the time **`pg_stat_monitor.pgsm_respose_time_s
##### Example 1: List all the table names involved in the query. ##### Example 1: List all the table names involved in the query.
```sql ```sql
SELECT relations::oid[]::regclass[], query FROM pg_stat_monitor; postgres=# SELECT relations,query FROM pg_stat_monitor;
     relations      |                                                query                                                 relations | query
--------------------+------------------------------------------------------------------------------------------------------ -------------------------------+------------------------------------------------------------------------------------------------------
 {pgbench_accounts} | UPDATE pgbench_accounts SET abalance = abalance + $1 WHERE aid = $2 | END
 {pgbench_accounts} | SELECT abalance FROM pgbench_accounts WHERE aid = $1 {pgbench_accounts} | SELECT abalance FROM pgbench_accounts WHERE aid = $1
 {pg_stat_monitor}  | select relations::oid[]::regclass[], cmd_type,resp_calls,query from pg_stat_monitor | vacuum pgbench_branches
 {pgbench_branches} | select count(*) from pgbench_branches {pgbench_branches} | select count(*) from pgbench_branches
 {pgbench_history}  | INSERT INTO pgbench_history (tid, bid, aid, delta, mtime) VALUES ($1, $2, $3, $4, CURRENT_TIMESTAMP) {pgbench_accounts} | UPDATE pgbench_accounts SET abalance = abalance + $1 WHERE aid = $2
 {foo,bar}          | select * from foo,bar | truncate pgbench_history
(5 rows) {pgbench_history} | INSERT INTO pgbench_history (tid, bid, aid, delta, mtime) VALUES ($1, $2, $3, $4, CURRENT_TIMESTAMP)
{pg_stat_monitor,pg_database} | SELECT relations query FROM pg_stat_monitor
| vacuum pgbench_tellers
| BEGIN
{pgbench_tellers} | UPDATE pgbench_tellers SET tbalance = tbalance + $1 WHERE tid = $2
{pgbench_branches} | UPDATE pgbench_branches SET bbalance = bbalance + $1 WHERE bid = $2
(12 rows)
``` ```
##### Example 2: List all the views and the name of the table in the view. Here we have a view "test_view" ##### Example 2: List all the views and the name of the table in the view. Here we have a view "test_view"
@ -336,7 +312,7 @@ View definition:
Now when we query the pg_stat_monitor, it will show the view name and also all the table names in the view. Now when we query the pg_stat_monitor, it will show the view name and also all the table names in the view.
```sql ```sql
SELECT relations::oid[]::regclass[], query FROM pg_stat_monitor; SELECT relations, query FROM pg_stat_monitor;
      relations      |                                                query                                                       relations      |                                                query                                                
---------------------+------------------------------------------------------------------------------------------------------ ---------------------+------------------------------------------------------------------------------------------------------
 {test_view,foo,bar} | select * from test_view  {test_view,foo,bar} | select * from test_view
@ -349,20 +325,22 @@ SELECT relations::oid[]::regclass[], query FROM pg_stat_monitor;
**`cmd_type`**: List the command type of the query. **`cmd_type`**: List the command type of the query.
```sql ```sql
SELECT bucket, substr(query,0, 50) AS query, cmd_type FROM pg_stat_monitor WHERE elevel = 0; postgres=# SELECT bucket, substr(query,0, 50) AS query, cmd_type FROM pg_stat_monitor WHERE elevel = 0;
bucket | query | cmd_type bucket | query | cmd_type
--------+---------------------------------------------------+---------- --------+---------------------------------------------------+----------
1 | vacuum analyze pgbench_history | 4 | END |
1 | alter table pgbench_tellers add primary key (tid) | 4 | SELECT abalance FROM pgbench_accounts WHERE aid = | SELECT
1 | insert into pgbench_tellers(tid,bid,tbalance) val | INSERT 4 | vacuum pgbench_branches |
1 | select * from tt for update | UPDATE 4 | select count(*) from pgbench_branches | SELECT
1 | update tt set a = $1 | UPDATE 4 | UPDATE pgbench_accounts SET abalance = abalance + | UPDATE
1 | delete from tt | DELETE 4 | truncate pgbench_history |
1 | insert into pgbench_branches(bid,bbalance) values | INSERT 4 | INSERT INTO pgbench_history (tid, bid, aid, delta | INSERT
1 | begin | 5 | SELECT relations query FROM pg_stat_monitor | SELECT
1 | drop table if exists pgbench_accounts, pgbench_br | 9 | SELECT bucket, substr(query,$1, $2) AS query, cmd |
1 | copy pgbench_accounts from stdin | INSERT 4 | vacuum pgbench_tellers |
1 | create table pgbench_history(tid int,bid int,aid | 4 | BEGIN |
1 | SELECT bucket, substr(query,$1, $2) AS query, cmd | SELECT 5 | SELECT relations,query FROM pg_stat_monitor | SELECT
(12 rows) 4 | UPDATE pgbench_tellers SET tbalance = tbalance + | UPDATE
4 | UPDATE pgbench_branches SET bbalance = bbalance + | UPDATE
(14 rows)
``` ```