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Data cleaning: Difference between revisions
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== is null == | == is null == | ||
Finds whether a variable is NULL [http://ideone.com/tKv2gQ demo] | Finds whether a variable is NULL. [http://ideone.com/tKv2gQ online demo] | ||
* PHP [http://tw2.php.net/is_null is_null] | * PHP [http://tw2.php.net/is_null is_null] | ||
* Google spreadsheet / Excel: | * Google spreadsheet / Excel: | ||