PostgreSQL: The world's most advanced open source database
WEBPostgreSQL is a powerful, open source object-relational database system with over 35 years of active development that has earned it a strong reputation for reliability, feature robustness, and performance. There is a wealth of information to be found describing how to install and use PostgreSQL through the official documentation.
Downloads - PostgreSQL
WEBSep 5, 2024 · PostgreSQL Downloads. PostgreSQL is available for download as ready-to-use packages or installers for various platforms, as well as a source code archive if you want to build it yourself.
Chapter 26. Backup and Restore - PostgreSQL
WEBWhile the procedure is essentially simple, it is important to have a clear understanding of the underlying techniques and assumptions. There are three fundamentally different approaches to backing up PostgreSQL data: Each has its own strengths and weaknesses; each is discussed in turn in the following sections. 25.3. Log File Maintenance.
Linux downloads (Ubuntu) - PostgreSQL
WEBSep 5, 2024 · Linux downloads (Ubuntu) PostgreSQL is available in all Ubuntu versions by default. However, Ubuntu "snapshots" a specific version of PostgreSQL that is then supported throughout the lifetime of that Ubuntu version. The PostgreSQL project maintains an Apt repository with all supported of PostgreSQL available.
PostgreSQL: Documentation: 16: 8.1. Numeric Types
WEBThe type numeric can store numbers with a very large number of digits. It is especially recommended for storing monetary amounts and other quantities where exactness is required. Calculations with numeric values yield exact results where possible, e.g., addition, subtraction, multiplication. However, calculations on numeric values are very slow compared to the integer types, or to the floating ...
9.9. Date/Time Functions and Operators - PostgreSQL
WEBTable 9.33 shows the available functions for date/time value processing, with details appearing in the following subsections. Table 9.32 illustrates the behaviors of the basic arithmetic operators (+, *, etc.).For formatting functions, refer to Section 9.8.You should be familiar with the background information on date/time data types from Section 8.5.
PostgreSQL: Documentation: 16: 8.5. Date/Time Types
WEBThe output format of the date/time types can be set to one of the four styles ISO 8601, SQL (Ingres), traditional POSTGRES (Unix date format), or German. The default is the ISO format. (The SQL standard requires the use of the ISO 8601 format. The name of the “SQL” output format is a historical accident.)
PostgreSQL: Documentation: 16: 9.19. Array Functions and Operators
WEB9.19. Array Functions and Operators #. Table 9.53 shows the specialized operators available for array types. In addition to those, the usual comparison operators shown in Table 9.1 are available for arrays. The comparison operators compare the array contents element-by-element, using the default B-tree comparison function for the element data ...
PostgreSQL: Documentation: 16: 9.14. UUID Functions
WEB9.14. UUID Functions #. PostgreSQL includes one function to generate a UUID: gen_random_uuid () → uuid. This function returns a version 4 (random) UUID. This is the most commonly used type of UUID and is appropriate for most applications. The uuid-ossp module provides additional functions that implement other standard algorithms for ...
PostgreSQL: Documentation: 16: 7.6. LIMIT and OFFSET
WEBOFFSET says to skip that many rows before beginning to return rows. OFFSET 0 is the same as omitting the OFFSET clause, as is OFFSET with a NULL argument. If both OFFSET and LIMIT appear, then OFFSET rows are skipped before starting to count the LIMIT rows that are returned. When using LIMIT, it …