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MySQL EXTRACT () function

SQL Dates MySQL Date Functions

Definition and Usage

EXTRACT () function returns a separate part of the date / time, such as year, month, day, hour, minute, and so on.

grammar

EXTRACT(unit FROM date)

date date expression argument is legitimate. unit parameter can have the following values:

Unit 值
MICROSECOND
SECOND
MINUTE
HOUR
DAY
WEEK
MONTH
QUARTER
YEAR
SECOND_MICROSECOND
MINUTE_MICROSECOND
MINUTE_SECOND
HOUR_MICROSECOND
HOUR_SECOND
HOUR_MINUTE
DAY_MICROSECOND
DAY_SECOND
DAY_MINUTE
DAY_HOUR
YEAR_MONTH


Examples

Suppose we have the following "Orders" table:

OrderId ProductName OrderDate
1 Jarlsberg Cheese 2008-11-11 13:23:44.657

Here is the SELECT statement:

SELECT EXTRACT(YEAR FROM OrderDate) AS OrderYear,
EXTRACT(MONTH FROM OrderDate) AS OrderMonth,
EXTRACT(DAY FROM OrderDate) AS OrderDay,
FROM Orders
WHERE OrderId=1

The results are as follows:

OrderYear OrderMonth OrderDay
2008 11 11


SQL Dates MySQL Date Functions