psql tutorial

Tags: view server shel record switch align PIP taskI. Description of the orderPsql is the interactive terminal of PostgreSQL, which is equivalent to Sqlplus in Oracle. When the command is executed to connect to the database, the default user and database are Postgressecond, the command parameters-C command: Specifies that psql executes an SQL command (enclosed in double quotation marks) and exits after execution.-D database name: the names of the data

Label:1. Switch to Postgres user;2. Enter: Psql, enter the client psql of PostgreSQL;3.\l View all the current databases;4.psql Database1 connected to database1 this database;5. \dt View all the tables of the currently connected database (DATABASE1);6. \d Table1 View the table structure of table table1;Also: Modify a user's password in ubuntu:1. Switch to the roo

Tags: Zabbix monitoring add Psql database and Sql_server database templatesFirst, Psql Database performance monitoring:1 ) zabbix-agent Client Installation Pg_monz steps:[Email protected] ~]# TARXFZ pg_monz-1.0.1.tar.gz[Email protected] ~]# Cdpg_monz-1.0.1/pg_monz[Email protected]_monz]# cp find_dbname.sh find_dbname_table.sh/usr/local/bin/[Email protected]_monz]# CP userparameter_pgsql.conf/etc/zabbix/zabb

use Psql.Pg_restore and archive file formats use the Rebuild database together.1. Backup First:Pg_dump-u postgres-f t-f/vendemo.tar Vendemo back up with more than 800 K. Recovery:Pg_restore-u postgres-d Bk01/vendemo.tar2. Backup First:Pg_dump-u postgres-f c-f/vendemo.tar Vendemo back up with more than 300 K. Recovery:Pg_restore-u postgres-d Bk01/vendemo.tar three, compress backup and restore: Process Big Data library: 1. Use compressed dumps. Use your familiar compression program, such as

Often use PSQL query data, now summarize a few common command parameters, for future reference -H Database Address -U Database user name -T do not print fields and other information -C Executed SQL statement -s single step execution, is the execution of the time repeatedly press ENTER Case:/opt/pg93/bin/psql-h ${tdata_host}-u ${tdata_user}-t log_analysis-c "${checksql}"Reference: http://

\?-------------------------------------General\copyright display the use and release license terms for PostgreSQL\g [file] or; Execute the query (and write the results to a file or | pipeline)\gset [PREFIX] executes the query and saves the result to the PSQL variable\h [name] SQL command syntax description, with * Show all commands syntax description\q Exit Psql\watch [SEC] Executes a query every SEC second

Tags: database SQ server use PSQL Data DTS Service System1. Connect to the server:Psql-h 192.168.1.88-u username-d DatabaseName2. Switch the database:\c dbname3. List all databases:\l4. List all current database tables:\d5. List all the fields of the table:\d TableName6. List the basic conditions of the table:\d+ TableName7. Exit\q8. View Help\?9. View the index:\di10. View the system table:\dts11. View the User:\du or \DG12. View the View:\DV or \d+

1. View partition size Select segment_name, partition_name, Bytes/1024/1024 used_mbFrom dba_segmentsWhere segment_name in ('tableone ','Tabletwo ') 2. Compare the data differences between the two tables (Select * From Table1) Minus (Select

Error during the OPENERP installation process:Psql:could not connect to server:no such file or directoryis the server running locally and acceptingConnections on Unix domain socket "/var/run/postgresql/.s.pgsql.5432"?Depending on the hint, there

PostgreSQL tutorial (18): client commands (2), postgresql tutorial VII. pg_dump: Pg_dump is a tool used to back up PostgreSQL databases. It can even perform a full and consistent backup when the database is being used concurrently without blocking access to the database by other users. The dump format generated by this tool can be divided into two types: script and archive file. The script format is a plain

need to start psql to experiment with the examples in this tutorial. You can activate it for the mydb database with the following command: Psql MyDBIf you do not provide a database name, then its default value is your user account name. You should have known this way in the previous section of using createdb .In psql