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Great number formatting trick

July 24, 2009

An excellent use of Oracle’s inbuilt formatting function – much simpler than parsing the input and multiple concatenation operators:

SELECT TO_CHAR(0408211234, 'FM0000G000G000','nls_numeric_characters=.-') phone from dual;

PHONE
-------------
0408-211-234

SSN formatting with TO_CHAR

From → SQL

2 Comments
  1. Hi Jeffrey

    Your formatting trick is very clear and fine, but what to do if I want to have more complex mask based on various input strings ;)
    Please check out my query

    http://plsqlenergy.wordpress.com/2010/03/03/sql-model-clause-magic/

  2. Hi vkamys,

    I would probably use a CASE structure to select the appropriate format mask depending on the input.

    Jeff

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