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Exclude terms from Regex Search


You can structure a Regex search so that the string you are looking for does not appear in the beginning, middle, or end of another string of numbers and/or letters. For example when we want to search for a 4 digit number, we enter the search: [0-9]{4} - any four digit sequences of the digits 0 through 9. In order to exclude instances of a four digit number such 1977881 or AA1122ZZ, we precede and follow this search with [^0-9a-zA-z].

[^0-9a-zA-z][0-9]{4}[^0-9a-zA-z]

See this example in NotePad ++


Sean O'Shea has more than 20 years of experience in the litigation support field with major law firms in New York and San Francisco.   He is an ACEDS Certified eDiscovery Specialist and a Relativity Certified Administrator.

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