DataMigrator/Reporting Server > SQL Date and Time Functions > EXTRACT: Obtaining a Datetime Field From Date/Time/Timestamp

EXTRACT: Obtaining a Datetime Field From Date/Time/Timestamp

How to:

The EXTRACT function can be used to obtain the year, month, day of month, hour, minute, second, millisecond, or microsecond component of a date, time, or timestamp value.

Syntax: How to Obtain a Datetime Field From a Date, Time, or Timestamp 

EXTRACT(field FROM arg)

where:

arg

Date, time, or timestamp

Is the input argument.

field

Is the datetime field of interest. Possible values are YEAR, QUARTER, MONTH, DAY, WEEKDAY, HOUR, MINUTE, SECOND, MILLISECOND and MICROSECOND.

This function returns an integer value.

Note:
  • YEAR, QUARTER, MONTH, DAY, and WEEKDAY can be used only if the argument is date or timestamp.
  • HOUR, MINUTE, SECOND, MILLISECOND and MICROSECOND can be used only if the argument is time or timestamp.

Example: Obtaining a Datetime Field From a Date, Time, or Timestamp

EXTRACT returns the components of a date, time, or timestamp. This example, 

EXTRACT(YEAR FROM '2000-01-01')

returns 2000.

This example, 

EXTRACT(HOUR FROM '11:22:33')

returns 11.

This example, 

EXTRACT(MICROSECOND FROM '2000-01-01 11:22:33.456789')

returns 456,789.

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