*/typedef struct SMgrRelationData{/* rlocator is the hashtable lookup key, so it must be first! */RelFileLocatorBackend smgr_rlocator;/* relation physical identifier *//* pointer to owning pointer, or NULL if none */struct SMgrRelationData**smgr_owner;/* * The following fields are reset...
Generating public/private rsa key pair. Enter file in which to save the key (/home/postgres/.ssh/id_rsa): Enter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in /home/postgres/.ssh/id_rsa. Your public key has been saved in /home...
gtmMasterSpecificExtraConfig=none # Will be added to Master's gtm.conf (done at initialization only)#--- GTM Slave ---# Because GTMisa key component to maintain database consistency, you may want to configure GTM slave #forbackup. #--- Overall ---gtmSlave=n# Specify yifyou configure G...
SMgrRelation smgropen(RelFileNode rnode, BackendId backend) { RelFileNodeBackend brnode; SMgrRelation reln; bool found; if (SMgrRelationHash == NULL)//第一次调用该函数,先初始化hash { /* First time through: initialize the hash table */ HASHCTL ctl; ctl.keysize = sizeof(RelFileNodeBackend...
在Postgres 的数据目录中,表文件的存储格式为base/<database oid>/<table relfilenode>。 在base 目录下,存储了不同 Database 的数据,例如在我的当前环境中,当前的数据库名为rose,其 oid 为 24582。 img 所以在 Postgres 数据目录的 base 目录下,就会有对应的 Database 目录,目录名称就是 Oid: ...
CREATE TABLE STUDENT (sno INT primary key, sname VARCHAR(10) not null, ssex varchar(10)); insert into student(sno,sname,ssex) values(1,'zhangsan','male'); insert into student(sno,sname,ssex) values(2,'lisi','male'); insert into student(sno,sname,ssex) values(3,'wangli','female...
> copies deleted rows into another table, so I can see that a row with that > key once existed in those tables. > This may not be a pg_dump problem, but some sort of MVCC irregularity where > pg_dump is able to dump rows that it shouldn't. I bet a VACUUM FULL would ...
detail: 'Key (userId)=(c6dc9108-8990-0d80-a635-98d3a928f4e4) is not present in table "accounts".', hint: undefined, position: undefined, internalPosition: undefined, internalQuery: undefined, where: undefined, schema: 'public',
In the current releases, additional features have appeared and performance has been improved. Among the key changes are: The following information was added to the output files of the crash_info - the current working directory, the PGDATA directory, and others. A number of problems were also...
如果执行SELECT COUNT(*) FROM obj;，则返回348，但如果执行SELECT COUNT(*) FROM ONLY obj;，则返回...