MS Access IsDate() Function
Example
Check whether the expression can be converted to a date:
  SELECT 
  IsDate(Now());
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Definition and Usage
The IsDate() function checks whether an expression can be converted to a date.
This function returns a Boolean value. TRUE (-1) indicates that the expression is a valid date, and FALSE (0) indicates that the expression is not a valid date.
Syntax
  IsDate(expression)
Parameter Values
| Parameter | Description | 
|---|---|
| expression | Required. The value to test | 
Technical Details
| Works in: | From Access 2000 | 
|---|
More Examples
Example
Return TRUE if the expression is a valid date, otherwise FALSE:
  SELECT
  IsDate("Hello");
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Example
Return TRUE if the expression is a valid date, otherwise FALSE:
  SELECT
  IsDate("August 25, 2017");
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Example
Return TRUE if the expression is a valid date, otherwise FALSE:
  SELECT IsDate(#25/8/2017#);
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