T-SQL DAY() Function
The T-SQL (Transact-SQL) DAY() function returns the day of the month for the specified date. It can be between 1 to 31.
Syntax
DAY(date)
Parameters
date |
Required. Specify a date from which to extract the day. |
Return Value
Returns the day part of the given date value.
Example 1:
The example below shows the usage of DAY() function.
SELECT DAY('2018-08-18');
Result: 18
SELECT DAY('2018-08-18 10:38:42');
Result: 18
SELECT DAY('2018-08-18 10:38:42.0000004');
Result: 18
SELECT DAY('2014-10-25');
Result: 25
Example 2:
Consider a database table called Orders with the following records:
| OrderQuantity | Price | OrderTime |
|---|---|---|
| 100 | 1.58 | 2017-08-18 10:38:42 |
| 120 | 1.61 | 2018-03-23 07:14:16 |
| 125 | 1.78 | 2018-09-12 05:25:56 |
| 50 | 1.80 | 2019-01-16 11:52:05 |
| 200 | 1.72 | 2020-02-06 09:31:34 |
The statement given below can be used to get the day portion of records of column OrderTime:
SELECT *, DAY(OrderTime) AS DAY_Value FROM Orders;
This will produce the result as shown below:
| OrderQuantity | Price | OrderTime | DAY_Value |
|---|---|---|---|
| 100 | 1.58 | 2017-08-18 10:38:42 | 18 |
| 120 | 1.61 | 2018-03-23 07:14:16 | 23 |
| 125 | 1.78 | 2018-09-12 05:25:56 | 12 |
| 50 | 1.80 | 2019-01-16 11:52:05 | 16 |
| 200 | 1.72 | 2020-02-06 09:31:34 | 6 |
❮ T-SQL Functions
