Learn about PostgreSQL and how you can leverage an open-source relational database management system.
Generally, I expect all the catalog information of a typical PostgreSQL instance to be around 20 MB. The size depends on the number of objects in the database. Databases with many objects (tables, indexes, etc.), such as large numbers of partitioned tables with many partitions, are expected...
With support for B-Trees, Genetic Algorithms, and GIN Indexes, PostgreSQL can further accelerate the previously-mentioned full-text searches. Back to top Who Should Use PostgreSQL? PostgreSQL adoption has been growing in recent years, from startups to big companies like Microsoft, LinkedIn, PayPal...
Compare PostgreSQL partitioning, replication, query optimization, and data security in this comprehensive open source database showdown with MySQL.
Primary keys are always indexed and unique (the field values cannot be duplicated). Other fields can optionally be indexed. It’s often useful to create indexes for foreign key fields and for fields that appear in WHERE and ORDER BY clauses, although not always, because of the potential over...
PostgresSQL supports almost all relational database features and offers a few unusual features that are normally absent in other RDBMS engines. Commonly supported objects include views, stored procedures, indexes, triggers and object-defined data types, in addition to general RDBMS features such as ...
features. Although it is SQL compliant where many of the features required by the SQL standard are supported (the latest version of PostgreSQL is 12 at the time of writing confirms to at least 160 of the 179 mandatory features for SQL), there are some slight variations in syntax or ...
This code snippet taken directly fromcostsize.cin the core is basically the only place in the optimizer which takes effective_cache_size into account. As you can see, the formula is only used to estimate the costs of indexes. In short: If PostgreSQL knows that a lot of RAM is around, ...
The array and the element are required arguments, the array is the first argument where the search will take place and the second argument is an element that is to be searched. The query will return all those indexes where the searched element has occurred. If the element is missing in...
Import data from a CSV using PostgreSQL JOIN relationships and JOINing tables Creating multicolumn indexes in SQL Selecting records from the last 24 hours in PostgreSQL How to kickstart PostgreSQL on Mac OS X How COUNT(DISTINCT [field]) works in Google BigQuery Dynamic grouping in SQL:...