PostgreSQL provides anALTER DATABASEcommand that allows us to modify a database. For instance, using ALTER DATABASE command, you can alter the database name, attributes,owner, etc. In Postgres, theALTER DATABASEcommand uses theOWNER TOclause to change/modify the database owner. Using practical...
In PostgreSQL, the “SET SEARCH_PATH” command is used to change a schema temporarily. To change a schema permanently at the database level or user lever, the “ALTER DATABASE” and "ALTER USER" commands are used with the “SET SEARCH_PATH” command, respectively. This post presented a s...
今天在虚拟机上整理了下pgbouncer的安装使用过程,记录如下。 说明:pgbouncer是一款轻量级针对postgresql的数据库连接工具,可以对客户端的连接做限制,防止恶意连接,另外也可以减少数据库的实际连接数,从而减少数据库的开销。 环境: VMWARE 8 CentOS 5.7 PG 9.1.2 pgbouncer 1.5.2 libevent-2.0.19 一.安装 1.下载pgbou...
createorreplacefunctionsum_price(g text)returnsnumeric(10,2)as$$selectsum(price)fromitemswherename=g; $$languagesql; 传参命名不能与表里面的字段相同(比如sum_price(g text)里的 g,数据库字段不能有 g),否则不能根据设置的条件查询相应数据。 已创建的 function,不能使用 replace 修改其之前的传入参数...
psql -U postgres -d your_database -- Change the user password inside psql ALTER USER my_user WITH PASSWORD 'new_password123'; Explanation: psql -U postgres -d your_database:Connect to the PostgreSQL database using psql. Replace your_database with the name of the database. ...
The following example usespg_recvlogical, a command-line tool provided by PostgreSQL for interacting with the logical replication feature. It is specifically used to receive changes from the database using logical replication slots. YugabyteDB provides the pg_recvlogical binary in the<yugabyte-db-dir...
--creates a mysql cdc table sourceCREATETABLEmysql_binlog(idINTNOTNULL,nameSTRING,descriptionSTRING,weightDECIMAL(10,3))WITH('connector'='mysql-cdc','hostname'='localhost','port'='3306','username'='flinkuser','password'='flinkpw','database-name'='inventory','table-name'='products'); ...
sudo apt-get update sudo apt-get install postgresql-client Install the certificate to connect to PostgreSQL server using SSL wget --no-check-certificate https://dl.cacerts.digicert.com/DigiCertGlobalRootCA.crt.pem Connect to the server (replace host, username and database name accordingly) ...
During the change of configuration of proxy instance, only the number of nodes is changed, and data copy does not take place. For this reason, there is no influence on services during the change. Action Select an instance and click the name to enter the "Basic Information" page of instance...
Database Specifications Querying the Storage Type of a Database Querying Storage Usage of a DB Instance DB Instance Management DR Instances Database Security Backup and Restoration Upgrading a Major Version Log Information Queries Instance Diagnosis SQL Statement Concurrency Control (RDS for PostgreSQL) ...