PostgreSQL查看表大小的命令

SELECT

    table_name,

    pg_size_pretty(table_size) AS table_size,

    pg_size_pretty(indexes_size) AS indexes_size,

    pg_size_pretty(total_size) AS total_size

FROM (

    SELECT

        table_name,

        pg_table_size(table_name) AS table_size,

        pg_indexes_size(table_name) AS indexes_size,

        pg_total_relation_size(table_name) AS total_size

    FROM (

        SELECT ('"' || table_schema || '"."' || table_name || '"') AS table_name

        FROM information_schema.tables

    ) AS all_tables

    ORDER BY total_size DESC

) AS pretty_sizes;

                                  table_name                                   | table_size | indexes_size | total_size

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

 "emg_search_cn_20170614"."place_address"                                      | 13 GB      | 10 GB        | 23 GB

 "emg_search_cn_20170614"."place_attributes"                                   | 6228 MB    | 17 GB        | 23 GB

 "emg_search_cn_20170614"."place_name"                                         | 5545 MB    | 2614 MB      | 8158 MB

 "emg_search_cn_20170614"."place_raw_category"                                 | 2132 MB    | 4582 MB      | 6715 MB

 "emg_search_cn_20170614"."place_main"                                         | 2668 MB    | 1226 MB      | 3895 MB

 "emg_search_jjj_20161128"."place_attributes"                                  | 422 MB     | 3081 MB      | 3503 MB

 "emg_search_jjj_20161128"."place_address"                                     | 869 MB     | 1785 MB      | 2654 MB

 "emg_search_cn_20170614"."place_category"                                     | 1010 MB    | 1226 MB      | 2237 MB

 "emg_search_cn_20170614"."place_chain"                                        | 656 MB     | 945 MB       | 1602 MB

 "emg_search_jjj_20161129"."place_address"                                     | 869 MB     | 283 MB       | 1152 MB

 "emg_search_jjj_20161125"."place_address"                                     | 787 MB     | 256 MB       | 1044 MB

 "emg_search_jjj_20161128"."place_raw_category"                                | 145 MB     | 810 MB       | 955 MB

 "emg_search_jjj_20161129"."place_attributes"                                  | 422 MB     | 521 MB       | 943 MB

 "emg_search_jjj_20161128"."place_name"                                        | 405 MB     | 473 MB       | 878 MB

 "emg_search_jjj_20161125"."place_attributes"                                  | 385 MB     | 475 MB       | 861 MB

 "emg_search_jjj_20161129"."place_name"                                        | 405 MB     | 76 MB        | 480 MB

 "emg_search_jjj_20161125"."place_name"                                        | 369 MB     | 69 MB        | 439 MB

 "emg_search_jjj_20161128"."place_main"                                        | 186 MB     | 223 MB       | 409 MB

 "emg_search_jjj_20161128"."place_category"                                    | 70 MB      | 223 MB       | 293 MB

 "emg_cn_170515"."emg_guangdongsheng_guangzhoushi_poi"                         | 267 MB     | 14 MB        | 281 MB

 "emg_cn_170515"."emg_shanghaishi_poi1_poi"                                    | 261 MB     | 14 MB        | 276 MB

SELECT

    table_name,

    pg_size_pretty(table_size) AS table_size,

    pg_size_pretty(indexes_size) AS indexes_size,

    pg_size_pretty(total_size) AS total_size

FROM (

    SELECT

        table_name,

        pg_table_size(table_name) AS table_size,

        pg_indexes_size(table_name) AS indexes_size,

        pg_total_relation_size(table_name) AS total_size

    FROM (

        -- tables from 'public'

        SELECT table_name

        FROM information_schema.tables

        where table_schema = 'public' and table_type = 'BASE TABLE'

        union

        -- materialized views

        SELECT oid::regclass::text as table_name

        FROM pg_class

        WHERE relkind = 'm'

        order by table_name

    ) AS all_tables

    -- ORDER BY total_size DESC

    order by table_name

) AS pretty_sizes

                       table_name                      | table_size | indexes_size | total_size

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

 emg_search_cn_20170602.all_place_attributes_mv       | 8192 bytes | 8192 bytes   | 16 kB

 emg_search_cn_20170602.place_address_mv              | 8192 bytes | 8192 bytes   | 16 kB

 emg_search_cn_20170602.place_attributes_mv           | 8192 bytes | 8192 bytes   | 16 kB

 emg_search_cn_20170602.place_category_mv             | 8192 bytes | 8192 bytes   | 16 kB

 emg_search_cn_20170602.place_chain_mv                | 8192 bytes | 8192 bytes   | 16 kB

 emg_search_cn_20170602.place_embeded_ids             | 0 bytes    | 8192 bytes   | 8192 bytes

 emg_search_cn_20170602.place_full_view_static        | 8192 bytes | 24 kB        | 32 kB

 emg_search_cn_20170602.place_name_mv                 | 8192 bytes | 8192 bytes   | 16 kB

 emg_search_cn_20170602.place_phoneme_mv              | 8192 bytes | 8192 bytes   | 16 kB

 emg_search_cn_20170602.place_raw_category_mv         | 8192 bytes | 8192 bytes   | 16 kB

 emg_search_cn_20170602.place_relationship_child_mv   | 8192 bytes | 8192 bytes   | 16 kB

 emg_search_cn_20170602.place_relationship_parent_mv  | 8192 bytes | 8192 bytes   | 16 kB

 emg_search_cn_20170602.rich_attributes_mv            | 8192 bytes | 8192 bytes   | 16 kB

 emg_search_cn_20170614.all_place_attributes_mv       | 3805 MB    | 509 MB       | 4314 MB

 emg_search_cn_20170614.place_address_mv              | 7960 MB    | 509 MB       | 8469 MB

 emg_search_cn_20170614.place_attributes_mv           | 1854 MB    | 509 MB       | 2363 MB

 emg_search_cn_20170614.place_category_mv             | 1005 MB    | 509 MB       | 1514 MB

 emg_search_cn_20170614.place_chain_mv                | 1253 MB    | 276 MB       | 1530 MB

 emg_search_cn_20170614.place_embeded_ids             | 827 MB     | 0 bytes      | 827 MB

 emg_search_cn_20170614.place_full_view_static        | 19 GB      | 1537 MB      | 21 GB

 emg_search_cn_20170614.place_name_mv                 | 4179 MB    | 509 MB       | 4688 MB

 emg_search_cn_20170614.place_phoneme_mv              | 8192 bytes | 8192 bytes   | 16 kB

 emg_search_cn_20170614.place_raw_category_mv         | 1494 MB    | 509 MB       | 2003 MB

 emg_search_cn_20170614.place_relationship_child_mv   | 30 MB      | 6944 kB      | 37 MB

 emg_search_cn_20170614.place_relationship_parent_mv  | 73 MB      | 31 MB        | 104 MB

 emg_search_cn_20170614.rich_attributes_mv            | 8192 bytes | 8192 bytes   | 16 kB

 emg_search_jjj_20161125.all_place_attributes_mv      | 240 MB     | 32 MB        | 272 MB

 emg_search_jjj_20161125.place_address_mv             | 468 MB     | 32 MB        | 500 MB

 emg_search_jjj_20161125.place_attributes_mv          | 115 MB     | 32 MB        | 147 MB

 emg_search_jjj_20161125.place_category_mv            | 64 MB      | 32 MB        | 97 MB

 emg_search_jjj_20161125.place_chain_mv               | 8192 bytes | 8192 bytes   | 16 kB

 emg_search_jjj_20161125.place_embeded_ids            | 52 MB      | 32 MB        | 85 MB

 emg_search_jjj_20161125.place_full_view_static       | 1145 MB    | 97 MB        | 1243 MB

SELECT *, pg_size_pretty(total_bytes) AS total

    , pg_size_pretty(index_bytes) AS INDEX

    , pg_size_pretty(toast_bytes) AS toast

    , pg_size_pretty(table_bytes) AS TABLE

  FROM (

  SELECT *, total_bytes-index_bytes-COALESCE(toast_bytes,0) AS table_bytes FROM (

      SELECT c.oid,nspname AS table_schema, relname AS TABLE_NAME

              , c.reltuples AS row_estimate

              , pg_total_relation_size(c.oid) AS total_bytes

              , pg_indexes_size(c.oid) AS index_bytes

              , pg_total_relation_size(reltoastrelid) AS toast_bytes

          FROM pg_class c

          LEFT JOIN pg_namespace n ON n.oid = c.relnamespace

          WHERE relkind = 'r'

  ) a

) a;

  oid  |      table_schema       |                         table_name                          | row_estimate | total_bytes | index_bytes | toast_bytes | table_bytes |   total    |   index    |   toast    |   table

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

  2619 | pg_catalog              | pg_statistic                                                |         1444 |    25845760 |      532480 |     8650752 |    16662528 | 25 MB      | 520 kB     | 8448 kB    | 16 MB

  1247 | pg_catalog              | pg_type                                                     |         2363 |      802816 |      286720 |             |      516096 | 784 kB     | 280 kB     |            | 504 kB

  1260 | pg_catalog              | pg_authid                                                   |            1 |       73728 |       32768 |             |       40960 | 72 kB      | 32 kB      |            | 40 kB

  1249 | pg_catalog              | pg_attribute                                                |        37008 |     8650752 |     2490368 |             |     6160384 | 8448 kB    | 2432 kB    |            | 6016 kB

  1255 | pg_catalog              | pg_proc                                                     |         3327 |     1286144 |      393216 |       24576 |      868352 | 1256 kB    | 384 kB     | 24 kB      | 848 kB

  1418 | pg_catalog              | pg_user_mapping                                             |            0 |       16384 |       16384 |             |           0 | 16 kB      | 16 kB      |            | 0 bytes

  2604 | pg_catalog              | pg_attrdef                                                  |          478 |      425984 |       65536 |        8192 |      352256 | 416 kB     | 64 kB      | 8192 bytes | 344 kB

  2606 | pg_catalog              | pg_constraint                                               |          352 |      270336 |      163840 |        8192 |       98304 | 264 kB     | 160 kB     | 8192 bytes | 96 kB

  2610 | pg_catalog              | pg_index                                                    |         1096 |      393216 |      114688 |             |      278528 | 384 kB     | 112 kB     |            | 272 kB

  2617 | pg_catalog              | pg_operator                                                 |          765 |      245760 |       81920 |             |      163840 | 240 kB     | 80 kB      |            | 160 kB

  2753 | pg_catalog              | pg_opfamily                                                 |           86 |       81920 |       32768 |             |       49152 | 80 kB      | 32 kB      |            | 48 kB

  2616 | pg_catalog              | pg_opclass                                                  |          128 |       90112 |       32768 |             |       57344 | 88 kB      | 32 kB      |            | 56 kB

  2601 | pg_catalog              | pg_am                                                       |            5 |       73728 |       32768 |             |       40960 | 72 kB      | 32 kB      |            | 40 kB

  2602 | pg_catalog              | pg_amop                                                     |          436 |      163840 |       98304 |             |       65536 | 160 kB     | 96 kB      |            | 64 kB

  2603 | pg_catalog              | pg_amproc                                                   |          344 |      106496 |       49152 |             |       57344 | 104 kB     | 48 kB      |            | 56 kB

  2612 | pg_catalog              | pg_language                                                 |            4 |       73728 |       32768 |             |       40960 | 72 kB      | 32 kB      |            | 40 kB

  1262 | pg_catalog              | pg_database                                                 |            2 |       40960 |       32768 |             |        8192 | 40 kB      | 32 kB      |            | 8192 bytes

  2600 | pg_catalog              | pg_aggregate                                                |          133 |       65536 |       16384 |             |       49152 | 64 kB      | 16 kB      |            | 48 kB

  2618 | pg_catalog              | pg_rewrite                                                  |          142 |      925696 |       32768 |      671744 |      221184 | 904 kB     | 32 kB      | 656 kB     | 216 kB

  2620 | pg_catalog              | pg_trigger                                                  |            0 |       32768 |       24576 |        8192 |           0 | 32 kB      | 24 kB      | 8192 bytes | 0 bytes

  3466 | pg_catalog              | pg_event_trigger                                            |            0 |       16384 |       16384 |             |           0 | 16 kB      | 16 kB      |            | 0 bytes

  2609 | pg_catalog              | pg_description                                              |         3686 |      442368 |      139264 |        8192 |      294912 | 432 kB     | 136 kB     | 8192 bytes | 288 kB

  2605 | pg_catalog              | pg_cast                                                     |          198 |       81920 |       32768 |             |       49152 | 80 kB      | 32 kB      |            | 48 kB

  3501 | pg_catalog              | pg_enum                                                     |            0 |       24576 |       24576 |             |           0 | 24 kB      | 24 kB      |            | 0 bytes

  2615 | pg_catalog              | pg_namespace                                                |            6 |       73728 |       32768 |             |       40960 | 72 kB      | 32 kB      |            | 40 kB

  2607 | pg_catalog              | pg_conversion                                               |          132 |      106496 |       49152 |             |       57344 | 104 kB     | 48 kB      |            | 56 kB

  2608 | pg_catalog              | pg_depend                                                   |        15060 |     2998272 |     1933312 |             |     1064960 | 2928 kB    | 1888 kB    |            | 1040 kB

  2964 | pg_catalog              | pg_db_role_setting                                          |            0 |       32768 |       16384 |        8192 |        8192 | 32 kB      | 16 kB      | 8192 bytes | 8192 bytes

  1213 | pg_catalog              | pg_tablespace                                               |            2 |       73728 |       32768 |             |       40960 | 72 kB      | 32 kB      |            | 40 kB

  1136 | pg_catalog              | pg_pltemplate                                               |            8 |       57344 |       16384 |             |       40960 | 56 kB      | 16 kB      |            | 40 kB

  1261 | pg_catalog              | pg_auth_members                                             |            0 |       16384 |       16384 |             |           0 | 16 kB      | 16 kB      |            | 0 bytes

  1214 | pg_catalog              | pg_shdepend                                                 |          784 |      204800 |       98304 |             |      106496 | 200 kB     | 96 kB      |            | 104 kB

  2396 | pg_catalog              | pg_shdescription                                            |            1 |       65536 |       16384 |        8192 |       40960 | 64 kB      | 16 kB      | 8192 bytes | 40 kB

  3602 | pg_catalog              | pg_ts_config                                                |           16 |       73728 |       32768 |             |       40960 | 72 kB      | 32 kB      |            | 40 kB

  3603 | pg_catalog              | pg_ts_config_map                                            |          304 |       81920 |       32768 |             |       49152 | 80 kB      | 32 kB      |            | 48 kB

SELECT nspname || '.' || relname AS "relation",

  pg_size_pretty(pg_total_relation_size(C.oid)) AS "total_size"

FROM pg_class C

LEFT JOIN pg_namespace N ON (N.oid = C.relnamespace)

WHERE nspname NOT IN ('pg_catalog', 'information_schema')

  AND C.relkind <> 'i'

  AND nspname !~ '^pg_toast'

ORDER BY pg_total_relation_size(C.oid) DESC

LIMIT 20;

                    relation                    | total_size

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

 emg_search_cn_20170614.place_address           | 23 GB

 emg_search_cn_20170614.place_attributes        | 23 GB

 emg_search_cn_20170614.place_full_view_static  | 21 GB

 emg_search_cn_20170614.place_address_mv        | 8469 MB

 emg_search_cn_20170614.place_name              | 8158 MB

 emg_search_cn_20170614.place_raw_category      | 6715 MB

 emg_search_cn_20170614.place_name_mv           | 4688 MB

 emg_search_cn_20170614.all_place_attributes_mv | 4314 MB

 emg_search_cn_20170614.place_main              | 3895 MB

 emg_search_jjj_20161128.place_attributes       | 3503 MB

 emg_search_jjj_20161128.place_address          | 2654 MB

 emg_search_cn_20170614.place_attributes_mv     | 2363 MB

 emg_search_cn_20170614.place_category          | 2237 MB

 emg_search_cn_20170614.place_raw_category_mv   | 2003 MB

 emg_search_cn_20170614.place_chain             | 1602 MB

 emg_search_jjj_20161128.place_full_view_static | 1600 MB

 emg_search_cn_20170614.place_chain_mv          | 1530 MB

 emg_search_cn_20170614.place_category_mv       | 1514 MB

 emg_search_jjj_20161129.place_full_view_static | 1369 MB

 emg_search_jjj_20161125.place_full_view_static | 1243 MB

(20 rows)

SELECT

    table_schema || '.' || table_name AS TableName,

    pg_size_pretty(pg_total_relation_size('"' || table_schema || '"."' || table_name || '"')) AS TableSize

FROM information_schema.tables

ORDER BY

    pg_total_relation_size('"' || table_schema || '"."' || table_name || '"') DESC;

                                 tablename                                 | tablesize

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

 emg_search_cn_20170614.place_address                                      | 23 GB

 emg_search_cn_20170614.place_attributes                                   | 23 GB

 emg_search_cn_20170614.place_name                                         | 8158 MB

 emg_search_cn_20170614.place_raw_category                                 | 6715 MB

 emg_search_cn_20170614.place_main                                         | 3895 MB

 emg_search_jjj_20161128.place_attributes                                  | 3503 MB

 emg_search_jjj_20161128.place_address                                     | 2654 MB

 emg_search_cn_20170614.place_category                                     | 2237 MB

 emg_search_cn_20170614.place_chain                                        | 1602 MB

 emg_search_jjj_20161129.place_address                                     | 1152 MB

 emg_search_jjj_20161125.place_address                                     | 1044 MB

 emg_search_jjj_20161128.place_raw_category                                | 955 MB

 emg_search_jjj_20161129.place_attributes                                  | 943 MB

 emg_search_jjj_20161128.place_name                                        | 878 MB

 emg_search_jjj_20161125.place_attributes                                  | 861 MB

 emg_search_jjj_20161129.place_name                                        | 480 MB

 emg_search_jjj_20161125.place_name                                        | 439 MB

 emg_search_jjj_20161128.place_main                                        | 409 MB

 emg_search_jjj_20161128.place_category                                    | 293 MB

 emg_cn_170515.emg_guangdongsheng_guangzhoushi_poi                         | 281 MB

 emg_cn_170515.emg_shanghaishi_poi1_poi                                    | 276 MB

 emg_search_jjj_20161129.place_raw_category                                | 275 MB

 emg_cn_170515.emg_guangdongsheng_shenzhenshi_poi                          | 249 MB

查看当前库表和物化视图总大小

SELECT

    inet_server_addr() AS instance_address,

    table_catalog AS database_name,

    table_schema AS schema_name,

    table_name,

    pg_table_size(table_full_name) AS table_size,

    pg_indexes_size(table_full_name) AS index_size,

    pg_total_relation_size(table_full_name) AS total_size,

    table_type

FROM (

SELECT

          ('"' || table_schema || '"."' || table_name || '"') AS table_full_name,

          table_catalog,

          table_schema,

          table_name,

          table_type

     FROM information_schema.tables

     WHERE table_schema NOT IN ('pg_catalog','information_schema','topology','tiger','tiger_data') and table_type='BASE TABLE'

     UNION ALL

         SELECT

                ('"' || schemaname || '"."' || matviewname || '"') AS table_full_name,

                current_database() AS table_catalog,

                schemaname AS table_schema,

                matviewname AS table_name,

               'MATERIALIZED VIEW' as table_type

         FROM pg_matviews

     ) AS all_tables

ORDER BY total_size DESC;

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