您可以使用pg_relation_size()来找出磁盘上索引的大小。使用pg_table_size()来找出没有索引的表的大小。
the maximum size of a single file is RELSEG_SIZE * BLCKSZ; relations bigger than that are divided into multiple files. RELSEG_SIZE * BLCKSZ must be less than your OS' limit on file size. This is often 2 GB or 4GB in a 32-bit operating system, unless you have large file support ...
postgres=# SELECT pg_table_is_visible('testtable'::regclass); pg_table_is_visible --- t (1 row) 4. 系统表信息函数:名字 返回类型 描述 format_type(type_oid,typemod) text 获取一个数据类型的SQL名称 pg_get_viewdef(view_oid) text 为视图获取CREATE VIEW命令 pg_get_viewdef(view...
select pg_database.datname, pg_size_pretty (pg_database_size(pg_database.datname)) AS size from pg_database; 3、按顺序查看索引 1 select indexrelname, pg_size_pretty(pg_relation_size(relid)) from pg_stat_user_indexes where schemaname='public' order by pg_relation_size(relid) desc; ...
ctl.entrysize = sizeof(SMgrRelationData); SMgrRelationHash = hash_create("smgr relation table", 400, &ctl, HASH_ELEM | HASH_BLOBS); dlist_init(&unowned_relns); } /* Look up or create an entry */ brnode.node = rnode; brnode.backend = backend; ...
Configuration: new optionskipPoliciesin subsectionlogicalRestoreto allow to skip policies (CREATE POLICY) during restore process, to avoid errors likepolicy "xxx" for table "yyy" already exists:https://gitlab.com/postgres-ai/database-lab/-/merge_requests/769 ...
size_tpgxcnode_get_all(GTM_PGXCNodeInfo**data,size_tmaxlen,boollocked) { GTM_PGXCNodeInfoHashBucket*bucket; gtm_ListCell*elem; intnode=0; inti; if(!locked) GTM_RWLockAcquire(&PGXCNodesLock,GTM_LOCKMODE_READ); for(i=0;i<NODE_HASH_TABLE_SIZE;i++) { ...
Excel xlsx文件是zip文件，因此是 * 压缩 * 的。如果您尝试将数据保存为CSV文本文件，您可能会发现它...
可以使用pg_get_wal_stats函数查看LSN间隔中的一般统计信息: 代码语言:javascript 复制 postgres=# select*frompg_get_wal_stats('0/157BA88','0/157E768',true)order by count_percentage desc;resource_manager/record_type|count|count_percentage|record_size|record_size_percentage|fpi_size|fpi_size_percenta...
可以使用pg_get_wal_stats函数查看LSN间隔中的一般统计信息: postgres=# select * from pg_get_wal_stats('0/157BA88', '0/157E768', true) order by count_percentage desc;resource_manager/record_type | count | count_percentage | record_size | record_size_percentage | fpi_size | fpi_size_perc...