WHERE DATEPART(WEEKDAY, pubdate) = 3 : DATEPART « Date Functions « SQL Server / T-SQL Tutorial

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SQL Server / T-SQL Tutorial » Date Functions » DATEPART 
10. 8. 3. WHERE DATEPART(WEEKDAY, pubdate) = 3
31CREATE TABLE titles(
32>    title_id       varchar(20),
33>    title          varchar(80)       NOT NULL,
34>    type           char(12)          NOT NULL,
35>    pub_id         char(4)               NULL,
36>    price          money                 NULL,
37>    advance        money                 NULL,
38>    royalty        int                   NULL,
39>    ytd_sales      int                   NULL,
40>    notes          varchar(200)          NULL,
41>    pubdate        datetime          NOT NULL
42)
43> GO
1>
2insert titles values ('1''Secrets',   'popular_comp', '1389', $20.00, $8000.00, 104095,'Note 1','06/12/94')
3insert titles values ('2''The',       'business',     '1389', $19.99, $5000.00, 104095,'Note 2','06/12/91')
4insert titles values ('3''Emotional', 'psychology',   '0736', $7.99,  $4000.00, 103336,'Note 3','06/12/91')
5insert titles values ('4''Prolonged', 'psychology',   '0736', $19.99, $2000.00, 104072,'Note 4','06/12/91')
6insert titles values ('5''With',      'business',     '1389', $11.95, $5000.00, 103876,'Note 5','06/09/91')
7insert titles values ('6''Valley',    'mod_cook',     '0877', $19.99, $0.00,    122032,'Note 6','06/09/91')
8insert titles values ('7''Any?',      'trad_cook',    '0877', $14.99, $8000.00, 104095,'Note 7','06/12/91')
9insert titles values ('8''Fifty',     'trad_cook',    '0877', $11.95, $4000.00, 141509,'Note 8','06/12/91')
10> GO

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)
1>
2>
3SELECT *
4FROM titles
5WHERE
6> DATEPART(WEEKDAY, pubdate3
7> GO
title_id             title                                                                            type         pub_id price                 advance               royalty     ytd_sales   notes
                                                                                                                                                                                               pubdate

-------------------- -------------------------------------------------------------------------------- ------------ ------ --------------------- --------------------- ----------- ----------- ----------
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- ---------
--------------
1                    Secrets                                                                          popular_comp 1389                 20.0000             8000.0000          10        4095 Note 1
                                                                                                                                                                                               1994-12-0
6 00:00:00.000

(rows affected)
1>
2> drop table titles;
3> GO
10. 8. DATEPART
10. 8. 1. DATEPART returns part of a date as an integer value.
10. 8. 2. Values for the datepart parameter.
10. 8. 3. WHERE DATEPART(WEEKDAY, pubdate) = 3
10. 8. 4. where DATEPART(DAY, pubdate) BETWEEN 8 AND 14
10. 8. 5. where DATEDIFF(WEEK, pubdate, GETDATE()) <= 48
10. 8. 6. DATEPART Function returns the integer value of the datepart specified: DATEPART(datepart,date)
10. 8. 7. select DATEPART(day, '2002-09-30 11:35:00')
10. 8. 8. select DATEPART(month, '2002-09-30 11:35:00')
10. 8. 9. select DATEPART(year, '2002-09-30 11:35:00')
10. 8. 10. select DATEPART(hour, '2002-09-30 11:35:00')
10. 8. 11. select DATEPART(minute, '2002-09-30 11:35:00')
10. 8. 12. select DATEPART(second, '2002-09-30 11:35:00')
10. 8. 13. select DATEPART(quarter, '2002-09-30 11:35:00')
10. 8. 14. select DATEPART(dayofyear, '2002-09-30 11:35:00')
10. 8. 15. select DATEPART(week, '2002-09-30 11:35:00')
10. 8. 16. select DATEPART(weekday, '2002-09-30 11:35:00')
10. 8. 17. select DATEPART(m,'2002-09-30')
10. 8. 18. SELECT DATEPART(dd, '7/5/99')
10. 8. 19. SELECT DATEPART(dd, '7/5/00')
10. 8. 20. IF DATEDIFF(dd, '7/5/99','7/5/00') = 0
10. 8. 21. (DATEPART(mm, @date1) = DATEPART(mm, @date2))
10. 8. 22. (DATEPART(dd, @date1) = DATEPART(dd, @date2))
10. 8. 23. (DATEPART(yy, @date1) = DATEPART(yy, @date2)
10. 8. 24. Identifying Weekday
10. 8. 25. Grouping by the Week by using datepart function
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