The Ultimate Guide to High Availability with MariaDB
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WEEKDAY

Sintassi

WEEKDAY(data)

Spiegazione

Restituisce il numero del giorno della settimana corrispondente alla data indicata (0 = lunedì, 1 = martedì, ... 6 = sabato).

Ciò differisce da DAYOFWEEK(), che segue lo standard ODBC (1 = domenica, 2 = lunedì, ..., 7 = sabato).

Esempi

MariaDB [(none)]> SELECT WEEKDAY('2008-02-03 22:23:00');
+--------------------------------+
| WEEKDAY('2008-02-03 22:23:00') |
+--------------------------------+
|                              6 |
+--------------------------------+
1 row in set (0.00 sec)

MariaDB [(none)]> SELECT WEEKDAY('2007-11-06');
+-----------------------+
| WEEKDAY('2007-11-06') |
+-----------------------+
|                     1 |
+-----------------------+
1 row in set (0.00 sec)

MariaDB [(none)]> 

CREATE TABLE t1 (d DATETIME);
INSERT INTO t1 VALUES
    ("2007-01-30 21:31:07"),
    ("1983-10-15 06:42:51"),
    ("2011-04-21 12:34:56"),
    ("2011-10-30 06:31:41"),
    ("2011-01-30 14:03:25"),
    ("2004-10-07 11:19:34");

MariaDB [test]> SELECT d FROM t1 where WEEKDAY(d) = 6;
+---------------------+
| d                   |
+---------------------+
| 2011-10-30 06:31:41 |
| 2011-01-30 14:03:25 |
+---------------------+
2 rows in set (0.02 sec)
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