Data cleaning: Difference between revisions
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(Created page with "Finds whether a variable is NULL * PHP [http://tw2.php.net/is_null is_null] * Google spreadsheet: ** [https://support.google.com/drive/answer/3093348 ISERR(value)] " value - ...") |
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Revision as of 18:23, 8 January 2014
Finds whether a variable is NULL
- PHP is_null
- Google spreadsheet:
- ISERR(value) " value - The value to be verified as an error type other than #N/A." ex: #NULL!
- If the value is exactly NULL not #NULL!, You may use EXACT(value, "NULL")