The citext module provides a case-insensitive character string data type, citext. Essentially, it internally calls the lower() function when comparing values. Otherwise, it behaves almost exactly like the text data type.

The Greenplum Database citext module is equivalent to the PostgreSQL citext module. There are no Greenplum Database or MPP-specific considerations for the module.

Installing and Registering the Module

The citext module is installed when you install Greenplum Database. Before you can use any of the data types, operators, or functions defined in the module, you must register the citext extension in each database in which you want to use the objects. Refer to Installing Additional Supplied Modules for more information.

Module Documentation

See citext in the PostgreSQL documentation for detailed information about the data types, operators, and functions defined in this module.

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