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PLSQL... Script: DYN SQL


A User Agent, like a web browser, uses HTTP to request a HTML document



In programming the danger of exploring the small details of coding is that you get obsessed with every line of code you write, thereby greatly reducing productivity.
In general, is not worth obsessing over code.
On the other hand you should code with deliberation and intent. Steven Feurstein Oracle Magazine July /August 2004

A User Agent, like a web browser, uses HTTP to request a HTML document

PostgreSQL

Home >PostgreSQL > postgres tip: how re-execute a query every n second

Stampa  Stampa


The PostgreSQL command \watch n it is very handy when you want to update query results every n seconds, and it is very easy to use. For example, If I want to keep an eye on the total of rows on my transaction table every 5 seconds:
-- I just run once my query
finance=# select count(1) from finance.transaction_log;
 count 
-------
 24875
(1 row)
--  then issuing the watch command the query will be executed every 5 seconds until I stop it(CRTL+z)
switch=#  \watch 5
Watch every 5s Tue May 26 17:42:00 2015 count ------- 24875 (1 row) Watch every 5s Tue May 26 17:42:05 2015 count ------- 24890 (1 row) Watch every 5s Tue May 26 17:42:10 2015 count ------- 24897 (1 row) (...)




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Tutorial
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Comandi
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How set a default schema working away in your postgreSQL session  [PostgreSQL] 
postgres tip: how re-execute a query every n second a nice postgres shell command  [PostgreSQL] 
Grouping data by the week example date_trunc function, trimming days by the week  [PostgreSQL] 
How get PosgreSQL table size pg_total_relation_size function  [PostgreSQL] 
PostgreSQL determine database size pg_database_size function returns database size   [PostgreSQL] 
PostgreSQL enable autostart at reboot on Centos / Redhat Configure autostart after reboot  [PostgreSQL] 

signal Marco Magnani marcomagnani@fishscript.com



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Anger is creative, depression is useless.
Dyson, Freeman J.


Anger is creative, depression is useless.
Dyson, Freeman J.




Oracle... Definizioni: SCN





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