Regex Generator | M (Power Query)

Regular Expression for Custom Formats

Explanation and implementation of a regular expression to validate specific number and alphanumeric formats with detailed guidance on usage and testing.


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Prompt

7500751805 501081404 782-DT-002

Answer

User's Requirement:

The user requires a regular expression to validate the following formats:

  • 7500751805
  • 501081404
  • 782-DT-002

Regular Expression:

The regular expression that can validate these formats is:

  • ^\d{9}$ for the first format (nine digits).
  • ^\d{9}$ for the second format (nine digits).
  • ^\d{3}-[A-Z]{2}-\d{3}$ for the third format (three digits, dash, two uppercase letters, dash, three digits).

Explanation:

  • ^ asserts the start of the string.
  • \d matches any digit.
  • {9} specifies that the previous element (digit) should occur exactly 9 times.
  • [A-Z] matches any uppercase letter.
  • {2} specifies that the previous element (uppercase letter) should occur exactly 2 times.
  • $ asserts the end of the string.

Testing and Validation:

  • The regular expression should accurately match the provided formats when tested against them.
  • It should allow only the specified patterns to pass validation.

Usage Guidance:

  • Implement the regular expression in a programming environment that supports regex.
  • Use functions like re.match() in Python to apply the regex for validation.

By using this regular expression, you can effectively validate the provided formats with precision and efficiency.

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Description

Explanation and implementation of a regular expression to validate specific number and alphanumeric formats with detailed guidance on usage and testing.

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