| 4D v13.4HOUR | ||||||||||||||
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    4D v13.4
 HOUR 
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| HOUR (arithmetic_expression) | ||
The HOUR function returns the hour part of the time passed in the arithmetic_expression. The value returned ranges from 0 to 23.
Supposing that we have the INVOICES table with a Delivery_Time field. To display the hour of the delivery time:
SELECT HOUR(Delivery_Time)
FROM INVOICES; 
	Product:  4D
	Theme:  Functions