Downloads - PostgreSQL
WEBSource code. The source code can be found in the main file browser or you can access the source control repository directly at git.postgresql.org.Instructions for building from source can be found in the documentation. Beta/RC Releases and …
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.
About - PostgreSQL
WEBSep 5, 2024 · PostgreSQL is a powerful, open source object-relational database system that uses and extends the SQL language combined with many features that safely store and scale the most complicated data workloads. The origins of PostgreSQL date back to 1986 as part of the POSTGRES project at the University of …
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 ...
PostgreSQL: Documentation: 16: COPY
WEBDescription. COPY moves data between PostgreSQL tables and standard file-system files. COPY TO copies the contents of a table to a file, while COPY FROM copies data from a file to a table (appending the data to whatever is in the table already). COPY TO can also copy the results of a SELECT query.. If a column list is specified, COPY TO copies only the data in the specified columns to the file.
PostgreSQL: Documentation: 16: CONNECT
WEBconnection_target specifies the target server of the connection on one of several forms. An optional identifier for the connection, so that it can be referred to in other commands. This can be an SQL identifier or a host variable. The user name for the database connection. This parameter can also specify user name and password, using one the ...
PostgreSQL: Documentation: 16: 1.1. Installation
WEB1.1. Installation. Chapter 1. Getting Started. 1.1. Installation #. Before you can use PostgreSQL you need to install it, of course. It is possible that PostgreSQL is already installed at your site, either because it was included in your operating system distribution or because the system administrator already installed it. If that is the case ...
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: LOCK
WEBname. The name (optionally schema-qualified) of an existing table to lock. If ONLY is specified before the table name, only that table is locked. If ONLY is not specified, the table and all its descendant tables (if any) are locked. Optionally, * can be specified after the table name to explicitly indicate that descendant tables are included. The command LOCK TABLE a, b; is equivalent to LOCK ...
PostgreSQL: Documentation: 16: COMMENT
WEBDescription. COMMENT stores a comment about a database object. Only one comment string is stored for each object, so to modify a comment, issue a new COMMENT command for the same object. To remove a comment, write NULL in place of the text string. Comments are automatically dropped when their object is dropped.