This blog on What is PostgreSQL covers an introduction to PostgreSQL, its history, features, applications, advantages, and disadvantages of PostgreSQL.
In PostgreSQL, the ISEMPTY() is an in-built range function that accepts a range or multi-range as an argument and retrieves a TRUE or FALSE value. The TRUE values state that the given range is empty while the FALSE value indicates that the specified range/multi-range is not empty. Synt...
Objects, classes, and function overloading are directly supported in PostgreSQL. It is possible to extend data types to create custom data types, due to their object-oriented characteristics. This guarantees high flexibility for developers operating with complex data models that require database integr...
Issue Is there a hot backup function in postgresql so that the data can be backup concurrently?Environment Red Hat Enterprise Linux 6 postgresql92 Red Hat Enterprise Linux 7 postgresql-9.2 Subscriber exclusive content A Red Hat subscription provides unlimited access to our knowledgebase, tools, ...
There is no hot backup function in postgresql before version 9.0, but this function is added in postgresql-9.2 shipped with RHEL7, and postgresql92 in RHEL6 which is provided in optional channel. About method to use packages in optional channel, please refer to the How to subscribe ...
SQL (structured query language) is designed for storing, manipulating, and retrieving data. The use of theSQL language in PostgreSQLmakes it extendable and standards-compliant. The RDBMS provides a large number of operators and functions for built-in data types. It also supports other rich SQL ...
PostgresQL 8.4 beta will be out any day and 8.4 official release will hopefully not be too far behind. As we wait patiently for the official release,Robert Treat has summarized nicely all the new features you can expect in 8.4. PostgreSQL 8.4 is what I like to call an earth-shattering rel...
The array_positions() function in PostgreSQL takes an array and an element as arguments and returns the index of all occurrences of that element in the array. The basic syntax for the function is given as: array_positions(Array, Element); ...
The PostgreSQL 16 query planner now tries to form a plan which feeds the rows to the plan’sAggregatenode in the correct order. And the executor is now smart enough to recognize this and forego performing the sort itself when the rows are already pre-sorted in the correct...
PostgreSQL as a Service (PGaaS) is a specific form of Database as a Service (DBaaS) that enables users to easily create, manage, and use Postgres databases in the cloud. Various cloud service providers offer PGaaS options, including AWS with RDS for Postgres, Microsoft's Azure Dat...