INSERT INTO target_table (id, column1, column2) SELECT id, column1, column2 FROM another_table ON CONFLICT (id) DO UPDATE SET column1 = EXCLUDED.column1, column2 = EXCLUDED.column2; 在上述示例中,target_table是目标表,another_table是另一个表。通过SELECT...
SELECT * FROM table_name WHERE column1 IN (SELECT column1 FROM another_table WHERE condition); 4. 事务处理BEGIN; -- SQL 操作 INSERT INTO table_name (column1, column2) VALUES (value1, value2); UPDATE table_name SET column1 = value1 WHERE condition; COMMIT; -- 或者 ROLLBACK; 以撤销...
RangeVar *relation;/* relation to update */List *targetList;/* the target list (of ResTarget) */// 对应语句中的set id = 0;信息在这里Node *whereClause;/* qualifications */List *fromClause;/* optional from clause for more tables */List *returningList;/* list of expressions to return ...
crashes and you need to reconfigure it, you can do it by pgxc_update_gtm command to update#GTM master with others. Of course, we provide pgxc_remove_gtm command to remove it. This command#will not stop the current GTM. It is up to the operator.#--- GTM Master ---#--- Overall -...
# If GTM crashes and you need to reconfigure it, you candoit by pgxc_update_gtm command to update # GTM master with others. Of course, we provide pgxc_remove_gtm command to remove it. This command # will not stop the current GTM. Itisup to theoperator. ...
select * from pg_user; 修改主配置文件postgresql.conf修改主配置文件pg_hba.confsystemctl restart postgresql.servicesu - postgrespsql -U ambariPassword for user ambari:ambari#查当前已连接的数据库\c ambari#给ambari授权grant all privileges on database ambari to ambari;#列出所有表\dselect * from ...
GRANT SELECT ON TABLE pg_catalog.pg_database TO backup; Configuring the Remote Mode pg_probackup supports the remote mode that allows you to perform backup, restore and WAL archiving operations remotely. In this mode, the backup catalog is stored on a local system, while Postgres Pro instance...
Table 17.1.Postgres Pro EnterprisePackages Package Description postgrespro-ent-15 Top-level package that installs and configuresPostgres Profor server and client systems. Do not use this package for upgrades or migrations. Important Installing thepostgrespro-ent-15package can delete existing installations...
Execute the following in the postgres server pod where you copied the backup to (just a tweak from their restore command): gunzip < "immich-db-backup-1737252000004.sql.gz" \ | sed "s/SELECT pg_catalog.set_config('search_path', '', false);/SELECT pg_catalog.set_config('search_path',...
( id int, info text) SERVER file_fdw_server OPTIONS (format 'csv', header 'false', filename '/home/postgres/file_fdw.csv', delimiter ',', null''); CREATE FOREIGN TABLE --查询数据 postgres=# select count(*) from csvtable ; count --- 3333 (1 row) ---注意,对于file fdw,只能查询...