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Oracle regular expression syntax

Oracle Database Tips by Donald Burleson

See also: Oracle Regular expressions indexes as a tuning tool

Oracle's implementation of "regular expression" syntax in their SQL is a powerful tool for data cleansing, the identification of typo's and inconsistent entry of names, addresses, &c.

Regular expressions allow for sophisticated pattern-matching and allow us to create a super-robust and intelligent data cleansing mechanism very quickly.

Best of all, there are pre-written regular expression patterns that are freely available on the web.

The challenge will be to create a "does this look like that"? algorithm that accurately simulates a human comparison, and also anticipate common data entry issues such as numerical transposition, name mis-spelling (using the Oracle soundex function) and name truncation.

Oracle regular expressions allow the data warehouse administrator to create routines that incorporate fuzzy logic and AI to quickly find and resolve duplicates and improve the quality of the data source. 

We are experts at this cutting edge technology and BC consultants can be hired to quickly implement data cleansing technology for your Oracle database.



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Note: This Oracle documentation was created as a support and Oracle training reference for use by our DBA performance tuning consulting professionals.  Feel free to ask questions on our Oracle forum.

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