We're pleased to announce that we published the schedule of the PGDay/MED 2024 taking place in Naples, Italy, on December ...

If you have pattern matching needs that go beyond this, consider writing a user-defined function in Perl or Tcl. While most regular-expression searches can be executed very quickly, regular ...

CREATE TABLE will create a new, initially empty table in the current database. The table will be owned by the user issuing the command. If a schema name is given (for example, CREATE TABLE ...

Peter Eisentraut (peter.eisentraut at enterprisedb.com) EDB Dresden, Germany Works on the build system, porting, documentation, and the internationalization effort, and codes many other improvements.

The FROM clause derives a table from one or more other tables given in a comma-separated table reference list. When a table reference names a table that is the parent of a table inheritance hierarchy, ...

There are considerable robustness and security risks in using background worker processes because, being written in the C language, they have unrestricted access to data. Administrators wishing to ...

Aggregate functions compute a single result from a set of input values. The built-in general-purpose aggregate functions are listed in Table 9.55 while statistical aggregates are in Table 9.56. The ...

ALTER LARGE OBJECT — change the definition of a large object ALTER MATERIALIZED VIEW — change the definition of a materialized view ALTER OPERATOR — change the definition of an operator ALTER OPERATOR ...

This function opens a new database connection using the parameters taken from two NULL-terminated arrays. The first, keywords, is defined as an array of strings, each one being a key word. The second, ...

Customer example Consultancy and Support from 2ndQuadrant for online trading platform, tastyworks, boosted PostgreSQL performance by 400%. tastyworks CTO, Jordan von Kluck, has this to say about ...

Value expressions are used in a variety of contexts, such as in the target list of the SELECT command, as new column values in INSERT or UPDATE, or in search conditions in a number of commands. The ...

SQL input consists of a sequence of commands. A command is composed of a sequence of tokens, terminated by a semicolon (“;”). The end of the input stream also terminates a command. Which tokens are ...