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SQL/MySQL/Procedure Function/DATE - История изменений
2026-04-06T23:33:58Z
История изменений этой страницы в вики
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http://sqle.ru/index.php?title=SQL/MySQL/Procedure_Function/DATE&diff=5404&oldid=prev
в 13:46, 26 мая 2010
2010-05-26T13:46:00Z
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Admin: 1 версия
2010-05-26T10:17:13Z
<p>1 версия</p>
<p><b>Новая страница</b></p><div>==Date calculation in a procedure==<br />
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<!-- start source code --><br />
<br />
<source lang="sql"><br />
<br />
mysql><br />
mysql> delimiter $$<br />
mysql><br />
mysql> CREATE PROCEDURE myProc()<br />
-> BEGIN<br />
-><br />
-> DECLARE TwentyYearsAgoToday DATE;<br />
-> DECLARE mystring VARCHAR(250);<br />
-><br />
-> SET TwentyYearsAgoToday=DATE_SUB(curdate(), interval 20 year);<br />
-><br />
-> SET mystring=CONCAT("It was ",TwentyYearsAgoToday," ...");<br />
-><br />
-> SELECT mystring;<br />
-><br />
-> END$$<br />
Query OK, 0 rows affected (0.00 sec)<br />
mysql> delimiter ;<br />
mysql><br />
mysql> call myProc();<br />
+-----------------------+<br />
| mystring |<br />
+-----------------------+<br />
| It was 1987-07-23 ... |<br />
+-----------------------+<br />
1 row in set (0.00 sec)<br />
Query OK, 0 rows affected (0.02 sec)<br />
mysql> drop procedure myProc;<br />
Query OK, 0 rows affected (0.00 sec)<br />
mysql><br />
mysql><br />
</source><br />
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==DATE DEFAULT "1999-12-31"==<br />
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<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="sql"><br />
<br />
mysql><br />
mysql><br />
mysql><br />
mysql> delimiter $$<br />
mysql><br />
mysql> CREATE PROCEDURE myProc()<br />
-> BEGIN<br />
-> DECLARE l_date DATE DEFAULT "1999-12-31";<br />
-><br />
-> select l_date;<br />
-> END$$<br />
Query OK, 0 rows affected (0.00 sec)<br />
mysql> delimiter ;<br />
mysql><br />
mysql> call myProc();<br />
+------------+<br />
| l_date |<br />
+------------+<br />
| 1999-12-31 |<br />
+------------+<br />
1 row in set (0.00 sec)<br />
Query OK, 0 rows affected (0.00 sec)<br />
mysql><br />
mysql> drop procedure myProc;<br />
Query OK, 0 rows affected (0.00 sec)<br />
mysql><br />
mysql><br />
mysql><br />
</source><br />
<br />
<br />
<br />
<br />
==DATE type variable==<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="sql"><br />
<br />
mysql><br />
mysql> delimiter $$<br />
mysql><br />
mysql> CREATE PROCEDURE myProc()<br />
-> BEGIN<br />
-> DECLARE my_dob DATE<br />
-> DEFAULT "1960-06-21"; /* My Birthday */<br />
-><br />
-> select my_dob;<br />
-> END$$<br />
Query OK, 0 rows affected (0.00 sec)<br />
mysql> delimiter ;<br />
mysql><br />
mysql> call myProc();<br />
+------------+<br />
| my_dob |<br />
+------------+<br />
| 1960-06-21 |<br />
+------------+<br />
1 row in set (0.00 sec)<br />
Query OK, 0 rows affected (0.00 sec)<br />
mysql><br />
mysql> drop procedure myProc;<br />
Query OK, 0 rows affected (0.02 sec)<br />
mysql><br />
mysql><br />
</source></div>
Admin