1. 查看当前数据库大小以及记录行数

select

  trim(pgdb.datname) as database, sum(b.mbytes) as mbytes, sum(a.rows) as rows

from

  (select db_id, id, name, sum(rows) as rows from stv_tbl_perm a group by db_id, id, name) as a

  join pg_class as pgc on pgc.oid = a.id

  join pg_namespace as pgn on pgn.oid = pgc.relnamespace

  join pg_database as pgdb on pgdb.oid = a.db_id

  join (select tbl, count(*) as mbytes from stv_blocklist group by tbl) b on a.id=b.tbl

group by pgdb.datname

order by 1;

 database  | mbytes  |    rows

-----------+---------+------------

 analytics | 1074998 | 5030398009

(1 row)

2. 查看当前数据库各schema大小以及每个schema下的记录行数

select

  trim(pgdb.datname) as database, trim(pgn.nspname) as schema,

  sum(b.mbytes) as mbytes, sum(a.rows) as rows

from

  (select db_id, id, name, sum(rows) as rows from stv_tbl_perm a group by db_id, id, name) as a

  join pg_class as pgc on pgc.oid = a.id

  join pg_namespace as pgn on pgn.oid = pgc.relnamespace

  join pg_database as pgdb on pgdb.oid = a.db_id

  join (select tbl, count(*) as mbytes from stv_blocklist group by tbl) b on a.id=b.tbl

group by pgdb.datname, pgn.nspname

order by 1, 2;

 database  |   schema    | mbytes |    rows

-----------+-------------+--------+------------

 analytics | datascience |    168 |     196128

 analytics | dba         |  15852 |   43752350

 analytics | dimensions  |  28223 |  225275059

 analytics | facts       | 265457 | 1382762113

 analytics | public      |  50235 |  104688442

 analytics | search_data | 696799 | 3235794562

 analytics | staging     |  18264 |   37929355

(7 rows)

3. 查看当前数据库下每张表的大小

方法一

SELECT   TRIM(pgdb.datname) AS Database,

         TRIM(a.name) AS Table,

         ((b.mbytes/part.total::decimal)*100)::decimal(5,2) AS pct_of_total,

         b.mbytes,

         b.unsorted_mbytes

FROM     stv_tbl_perm a

JOIN     pg_database AS pgdb

  ON     pgdb.oid = a.db_id

JOIN     ( SELECT   tbl,

                    SUM( DECODE(unsorted, 1, 1, 0)) AS unsorted_mbytes,

                    COUNT(*) AS mbytes

           FROM     stv_blocklist

           GROUP BY tbl ) AS b

       ON a.id = b.tbl

JOIN     ( SELECT SUM(capacity) AS total

           FROM   stv_partitions

           WHERE  part_begin = 0 ) AS part

      ON 1 = 1

WHERE    a.slice = 0

ORDER BY 4 desc, db_id, name;

 database  |                     table                     | pct_of_total | mbytes | unsorted_mbytes

-----------+-----------------------------------------------+--------------+--------+-----------------

 analytics | es_entitysvc_response_logshed                 |        39.42 | 450948 |          449820

 analytics | es_entitysvc_logshed                          |        18.06 | 206630 |          206054

 analytics | auto_events                                   |         9.99 | 114379 |          113395

 analytics | auto_events_realtime                          |         4.11 |  47029 |           47020

 analytics | auto_events_rt                                |         2.20 |  25251 |           25242

 analytics | entity                                        |         1.87 |  21485 |           16553

 analytics | unified_events_dev                            |         1.27 |  14604 |           14592

 analytics | logshedevents_processed                       |         0.65 |   7504 |            7504

 analytics | client_events_stg                             |         0.60 |   6912 |            6912

 analytics | search_autocomplete_response_processed        |         0.58 |   6672 |            6660

 analytics | entity_gen3                                   |         0.51 |   5940 |            5796

 analytics | staging_auto_events_stg                       |         0.47 |   5436 |            5436

 analytics | es_denaliusage_logshed                        |         0.45 |   5224 |            5212

 analytics | scout4cars_events                             |         0.38 |   4430 |            4430

 analytics | search_autocomplete_request_processed         |         0.35 |   4080 |            4068

 analytics | osm_metrics                                   |         0.32 |   3718 |            3708

 analytics | gm_auto_events                                |         0.32 |   3715 |            1970

 analytics | client_events_raj                             |         0.32 |   3707 |            1584

 analytics | scout_events_tmp                              |         0.29 |   3384 |            1716

 analytics | client_events_sessionmap_stg_loadtest         |         0.28 |   3288 |            3288

 analytics | unified_events_for_scout_dev                  |         0.27 |   3192 |            3180

 analytics | client_events_vlad                            |         0.27 |   3144 |            1572

 analytics | client_events_backup_till_1010                |         0.27 |   3120 |            1584

(25 rows)

方法二

select

  trim(pgdb.datname) as database, trim(pgn.nspname) as schema,

  trim(a.name) as Table, b.mbytes, a.rows

from

  (select db_id, id, name, sum(rows) as rows from stv_tbl_perm a group by db_id, id, name) as a

  join pg_class as pgc on pgc.oid = a.id

  join pg_namespace as pgn on pgn.oid = pgc.relnamespace

  join pg_database as pgdb on pgdb.oid = a.db_id

  join (select tbl, count(*) as mbytes from stv_blocklist group by tbl) b on a.id=b.tbl

order by 1, 2, 4 desc;

 database  |   schema    |                     table                     | mbytes |    rows

-----------+-------------+-----------------------------------------------+--------+------------

 analytics | datascience | clusterwithstartstop                          |    168 |     196128

 analytics | dba         | staging_auto_events_stg                       |   5436 |   42524253

 analytics | dba         | client_events                                 |   1680 |       8623

 analytics | dba         | client_events_hive                            |   1680 |       2742

 analytics | dba         | client_events_stg                             |   1656 |       3690

 analytics | dba         | client_events_stg_hive                        |   1548 |       2537

 analytics | dba         | facts_auto_events                             |   1452 |    1053537

 analytics | dba         | auto_events                                   |   1200 |      79584

 analytics | dba         | facts_auto_events_hive                        |   1200 |      77384

 analytics | dimensions  | entity                                        |  21485 |  178665073

 analytics | dimensions  | entity_gen3                                   |   5940 |   46499810

 analytics | dimensions  | date                                          |    216 |      39444

 analytics | dimensions  | location                                      |    192 |      65921

 analytics | dimensions  | product                                       |    132 |       2292

 analytics | dimensions  | carrier                                       |     96 |       1128

 analytics | dimensions  | application_info                              |     90 |       1248

 analytics | dimensions  | event_type_classification                     |     72 |        143

 analytics | facts       | auto_events                                   | 114379 |  893071197

 analytics | facts       | auto_events_realtime                          |  47029 |   78054568

(21 rows)

方法三

select

  cast(use2.usename as varchar(50)) as owner,

  pgc.oid,

  trim(pgdb.datname) as Database,

  trim(pgn.nspname) as Schema,

  trim(a.name) as Table,

  b.mbytes,

  a.rows

from

 (select db_id, id, name, sum(rows) as rows

  from stv_tbl_perm a

  group by db_id, id, name

  ) as a

 join pg_class as pgc on pgc.oid = a.id

 left join pg_user use2 on (pgc.relowner = use2.usesysid)

 join pg_namespace as pgn on pgn.oid = pgc.relnamespace

    and pgn.nspowner > 1

 join pg_database as pgdb on pgdb.oid = a.db_id

 join

   (select tbl, count(*) as mbytes

    from stv_blocklist

    group by tbl

   ) b on a.id = b.tbl

 order by mbytes desc, a.db_id, a.name; 

         owner          |   oid   | database  |   schema    |                     table                     | mbytes |    rows

------------------------+---------+-----------+-------------+-----------------------------------------------+--------+------------

 search_data_writer     |  780702 | analytics | search_data | es_entitysvc_response_logshed                 | 450948 | 1983660186

 search_data_writer     |  780704 | analytics | search_data | es_entitysvc_logshed                          | 206630 |  870298752

 tnadmin                |  868711 | analytics | facts       | auto_events                                   | 114379 |  893071197

 client_events_etl_user |  680119 | analytics | facts       | auto_events_realtime                          |  47029 |   78054568

 tnadmin                |  868715 | analytics | facts       | auto_events_rt                                |  25251 |  184784513

 sheena                 |  119412 | analytics | dimensions  | entity                                        |  21485 |  178665073

 client_events_etl_user | 1080972 | analytics | facts       | unified_events_dev                            |  14604 |  104578129

 search_data_writer     |  225115 | analytics | search_data | logshedevents_processed                       |   7504 |  112599927

 tnadmin                |  148013 | analytics | staging     | client_events_stg                             |   6912 |    9145782

 search_data_writer     |  218921 | analytics | search_data | search_autocomplete_response_processed        |   6672 |  116412380

 tnadmin                |  950671 | analytics | dimensions  | entity_gen3                                   |   5940 |   46499810

 tnadmin                |  252547 | analytics | dba         | staging_auto_events_stg                       |   5436 |   42524253

 search_data_writer     |  958865 | analytics | search_data | es_denaliusage_logshed                        |   5224 |   11127230

 tnadmin                |  754088 | analytics | facts       | scout4cars_events                             |   4430 |   17981548

 search_data_writer     |  218919 | analytics | search_data | search_autocomplete_request_processed         |   4080 |   42130637

 matthieu               |  157597 | analytics | facts       | osm_metrics                                   |   3718 |   33749875

 tnadmin                |  689962 | analytics | facts       | gm_auto_events                                |   3715 |   12066340

 tnadmin                |  158221 | analytics | facts       | client_events_raj                             |   3707 |    1362676

 krishna                |  138765 | analytics | staging     | client_events_sessionmap_stg_loadtest         |   3288 |   18799978

 client_events_etl_user | 1070400 | analytics | facts       | unified_events_for_scout_dev                  |   3192 |    2961636

 tnadmin                |  128436 | analytics | facts       | client_events_backup_till_1010                |   3120 |       7046

 tnadmin                |  147602 | analytics | facts       | client_events_logshed_temp                    |   3120 |      44265

(24 rows)

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