At my recent job, I was asked to create a backup procedure, which would dump a PostgreSQL schema to a compressed file and which was able to create weekly and daily backups. The backups had to be full backups each time a backup was made and the amount of daily and weekly backups should be […]
Not using indexes or huge tables without indexes, can have a very negative impact on the duration of a SQL query. The query planner will decide to make a sequence scan, which means that the query will go through the table sequentially to search for the required data. When this table is only 100 rows […]
Working on large database systems, with many tables and many indexes, it is easy to loose the overview on what is actually being used and what is just consuming unwanted disk space. If indexes are not closely monitored, they could end up using undesired space and moreover, they will consume unnecessary CPU cycles. Statistics about […]