Search Documentation: Home → Documentation → Manuals → PostgreSQL 9.4 This page in other versions: 9.0 / 9.1 / 9.2 / 9.3 / 9.4 |  Development versions: devel |  Unsupported versions: 7.1 / 7.2 / 7.3 / 7.4 / 8.0 / 8.1 / 8.2 / 8.3 / 8.4 PostgreSQL 9.4.0 Documentation Prev Up Chapter 9. Functions and Operators Next 9.4. String Functions and Operators This section describes functions and operators for examining and manipulating string values. Strings in this context include values of the types character , character varying , and text . Unless otherwise noted, all of the functions listed below work on all of these types, but be wary of potential effects of automatic space-padding when using the character type. Some functions also exist natively for the bit-string types. SQL defines some string functions that use key words, rather...