How do I extract the day of the week from a date in SQL?

Posted on by David Darling

How do I extract the day of the week from a date in SQL?

MySQL WEEKDAY() Function The WEEKDAY() function returns the weekday number for a given date. Note: 0 = Monday, 1 = Tuesday, 2 = Wednesday, 3 = Thursday, 4 = Friday, 5 = Saturday, 6 = Sunday.

What is day of week in SQL?

The DAYOFWEEK function returns an integer, in the range of 1 to 7, that represents the day of the week, where 1 is Sunday and 7 is Saturday. The DAYOFWEEK function is similar to the DAYOFWEEK_ISO function. The schema is SYSIBM.

How do I get the first day of the week in SQL?

Option 1: Sunday as the First Day of the Week DATEADD(week, DATEDIFF(week, -1, RegistrationDate), -1) AS Sunday; The function DATEADD() takes three arguments: a datepart, a number, and a date.

What is SQL day function?

SQL Server DAY() Function The DAY() function returns the day of the month (from 1 to 31) for a specified date.

How do I get the first and last day of the current week in SQL?

Full query for week start date & week end date

  1. SELECT DATEADD(DAY, 2 – DATEPART(WEEKDAY, GETDATE()), CAST(GETDATE() AS DATE)) [Week_Start_Date],
  2. DATEADD(DAY, 8 – DATEPART(WEEKDAY, GETDATE()), CAST(GETDATE() AS DATE)) [Week_End_Date]

How do I get the day of the week in SQL Developer?

Example# You can use TO_CHAR( date_value, ‘D’ ) to get the day-of-week.

How do you write a Datepart?

Can be one of the following values:

  1. year, yyyy, yy = Year.
  2. quarter, qq, q = Quarter.
  3. month, mm, m = month.
  4. dayofyear, dy, y = Day of the year.
  5. day, dd, d = Day of the month.
  6. week, ww, wk = Week.
  7. weekday, dw, w = Weekday.
  8. hour, hh = hour.

How to get weekday from date in SQL?

date

  • datetime
  • datetimeoffset
  • datetime2
  • smalldatetime
  • time

    • How to use datepart with date in SQL Server?

    DATEPART can be used in the select list, WHERE, HAVING, GROUP BY, and ORDER BY clauses. DATEPART implicitly casts string literals as a datetime2 type in SQL Server 2019 (15.x). This means that DATENAME does not support the format YDM when the date is passed as a string.

    How to get last day of last week in SQL?

    Syntax

  • Arguments. The date argument is a DATE value or any expression that evaluates to a DATE value of which you want to get the last day of the month.
  • Return value. The Oracle LAST_DAY () function always returns a DATE value that represents the last day of the month of that input date.
  • Examples.

    • How are dates stored in SQL?

    SQL Server comes with the following data types for storing a date or a date/time value in the database: DATE – format YYYY-MM-DD. DATETIME – format: YYYY-MM-DD HH:MI:SS. SMALLDATETIME – format: YYYY-MM-DD HH:MI:SS. TIMESTAMP – format: a unique number. Note: The date types are chosen for a column when you create a new table in your database!