What is PostgreSQL? Discover the powerful, open source object-relational database. Learn its features, use cases, comparison with MySQL, and enterprise readiness.
What is New in PostgreSQL 9.1 - Scanning Pages
The PostgreSQL time stamp data type is precise down to the microsecond and offers your users the choice to store time and date data with or without time zone information attached. Numeric Numeric data types come in two forms: exact and approximate. Numeric data types that are exact contain ...
PostgreSQL, also known as Postgres, is an open source relational database management system (DBMS) renowned for its flexibility, scalability, and extensive feature set. With a rich history dating back to its inception at the University of California Berkeley in 1986, PostgreSQL has evolved into a...
As you can see, PostgreSQL is growing its superiority over a closed database such as Oracle DB, whose popularity is steadily declining. MongoDB, as another representative of open database systems, has been holding steady in terms of interest for some time. In the case of PostgreSQL, an upwa...
PostgreSQL is hard to beat. PostgreSQL supports a variety of performance optimizations typically found only in proprietary database technology, such as geospatial support and unrestricted concurrency. This makes PostgreSQL extremely efficient when running deep, extensive data analysis across multiple data typ...
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, ...
By the way, TOP 100 is valid for SQL Server and SQL Azure, but not MySQL or Oracle. In MySQL, you’d use LIMIT 100 after the WHERE clause. In Oracle, you’d use a bound on ROWNUM as part of the WHERE clause, i.e. WHERE... AND ROWNUM <=100. Unfortunately, the ANSI/ISO SQL...
The idea is that a checkpoint is finished halfway before the next checkpoint is expected to kick in. In real life, a value of 0.7 - 0.9 seems to be the best choice for most workloads, but feel free to experiment a bit. NOTE: In PostgreSQL 14 this parameter will most likely not exist...
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. ...