Date/Time Functions and Operators
  • References/Database/PostgreSQL/Functions/DateTime

Table 9-30 shows the available functions for date/time value processing, with details appearing in the following subsections. Table 9-29 illustrates the behaviors of the basic

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ALTER OPERATOR
  • References/Database/PostgreSQL/Commands

NameALTER OPERATOR -- change the definition of an operator Synopsis

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Authentication Problems
  • References/Database/PostgreSQL/Client Authentication

Authentication failures and related problems generally manifest themselves through error messages like the following:

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Function and Trigger Security
  • References/Database/PostgreSQL/Database Roles

Functions and triggers allow users to insert code into the backend server that other users might execute unintentionally. Hence, both mechanisms permit users to "Trojan

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Destroying a Database
  • References/Database/PostgreSQL/Managing Databases

Databases are destroyed with the command DROP DATABASE:

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pg_visibility
  • References/Database/PostgreSQL/Appendixes/Additional Supplied Modules

The pg_visibility module provides a means for examining the visibility map (VM) and page-level visibility information. It also provides functions

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Full Text Search: Tables and Indexes
  • References/Database/PostgreSQL/Full Text Search

The examples in the previous section illustrated full text matching using simple constant strings. This section shows how to search table data, optionally using indexes.

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DROP SERVER
  • References/Database/PostgreSQL/Commands

NameDROP SERVER -- remove a foreign server descriptor Synopsis

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unaccent
  • References/Database/PostgreSQL/Appendixes/Additional Supplied Modules

unaccent is a text search dictionary that removes accents (diacritic signs) from lexemes. It's a filtering dictionary, which means its output

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Full Text Search: GIN and GiST Index Types
  • References/Database/PostgreSQL/Full Text Search

There are two kinds of indexes that can be used to speed up full text searches. Note that indexes are not mandatory for full text searching, but in cases where a column is

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