SELECT pg_size_pretty (pg_tablespace_size ('tablespace_name')); 8. 获取 Postgres 中所有数据库的列表及其大小(以 GB 为单位),按最大大小排序 SELECT pg_database.datnameas"database_name", pg_database_size(pg_database.datname)/1024/1024/1
方法/步骤 1 1.在postgresql数据库中默认情况下可通过pg_database_size函数加数据库名称的方式来查看数据库的大小 2 2.在pg_database表中记录着所有数据库的信息，也可以查看这个表的信息来查看所有数据库的大小 3 3.另外通过pg_size_pretty函数可以查看数据库的大小以kb mb gb的方式 4 4.通过pg_relation_siz...
1. 数据库大小(pg_database_size) postgres=# select datname from pg_database; datname --- postgres osdbadb template1 template0 mytestdb01 db03 (6 rows) postgres=# select pg_database_size ('db03'),pg_size_pretty(pg_database_size('db03')); pg_database_size | pg_size_pretty ---...
In PostgreSQL, built-in functions like pg_database_size(), and pg_relation_size() are used to get the database and table size respectively. The pg_size_pretty() function can be used with the collaboration of the pg_database_size(), pg_relation_size() to present the database/table si...
pg_relation_size(relid)/1024/1024 as "size_Mb", to_char(r.reltuples,'999999999999999999999') as "table_cnt" from pg_stat_user_tables t inner join pg_namespace n on t.schemaname = n.nspname inner join pg_class r on r.relname = t.relname ...
- Using pg_database_size() Function - Using pg_size_pretty() Function Example 1: Getting All Databases Size Using pgAdmin’s Statistics Open the pgAdmin, click on the “Databases” option under the “Servers” tree, and then select the pgAdmin’s statistics tab to get the size of all da...
selectpg_database_size('log_analysis');pg_database_size---23799992(1row) 1. 2. 3. 4. 5. 6. 2、select pg_database.datname, pg_size_pretty (pg_database_size(pg_database.datname)) AS size from pg_database; log_analysis=#selectpg_...
txt的数据导入t1表(t1表要提前建好,字段不一样,要指定字段) #查看数据库大小 select datname,pg_size_pretty(pg_database_size(datname)) from pg_database; #创建用户/角色create user u1 with password '123456'; #创建schema create schema schema_1; #授权schema给用户 grant usage on schema schema_1...
PostgreSQL有两个视图各司其职，分别保存着不同类别的OID，其中pg_database保存数据库本身对象的OID，pg_class保存表、索引和序列等对象的OID。2 Relation 关系代表非数据库本身的数据库对象，包括表、视图、索引和toast等，不包括数据库本身。3 MVCC Multi-Version-Concurrency-Control是一种并发控制机制，数据库引擎...
select pg_size_pretty(pg_database_size('postgres'))assize; -- 查询所有数据库大小 select datname, pg_size_pretty (pg_database_size(datname))ASsizefrom pg_database; 2. 查询表大小 -- 查询单个表大小 select pg_size_pretty(pg_relation_size('mytab'))assize; ...