MySQL DATEDIFF() Function
Example
Return the difference in days between two date values:
  SELECT DATEDIFF("2017-06-25", "2017-06-15");
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Definition and Usage
The DATEDIFF() function returns the difference in days between two date values.
Syntax
  DATEDIFF(date1, date2)Parameter Values
| Parameter | Description | 
|---|---|
| date1, date2 | Required. The two dates to calculate the difference between. (date1 - date2) | 
Technical Details
| Works in: | MySQL 5.7, MySQL 5.6, MySQL 5.5, MySQL 5.1, MySQL 5.0, MySQL 4.1.1 | 
|---|
More Examples
Example
Return the difference in days between two date values:
  SELECT DATEDIFF("2017-06-25 09:34:21", "2017-06-15 15:25:35");
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Example
Return the difference in days between two date values:
  SELECT DATEDIFF("2017-01-01", 
  "2016-12-24");
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