в 13:44, 26 мая 2010

2010-05-26T13:44:56Z

Admin: 1 версия

2010-05-26T09:53:43Z

1 версия

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== Select information from the mysql.proc table and get all the underlying data.==



<source lang="sql">
mysql>
mysql>
mysql> DELIMITER //
mysql>
mysql> CREATE FUNCTION myFunction (item_sum DECIMAL(10,2))
-> RETURNS DECIMAL(10,1)
-> BEGIN
->
->
-> RETURN ROUND(item_sum,1);
->
-> END
-> //
Query OK, 0 rows affected (0.00 sec)
mysql> DELIMITER ;
mysql>
mysql> select myFunction(123.12);
+--------------------+
| myFunction(123.12) |
+--------------------+
| 123.1 |
+--------------------+
1 row in set (0.00 sec)
mysql>
mysql>
mysql>
mysql> SELECT * FROM mysql.proc WHERE name = "myFunction"\G
*************************** 1. row ***************************
db: test
name: myFunction
type: FUNCTION
specific_name: myFunction
language: SQL
sql_data_access: CONTAINS_SQL
is_deterministic: NO
security_type: DEFINER
param_list: item_sum DECIMAL(10,2)
returns: decimal(10,1)
body: BEGIN
RETURN ROUND(item_sum,1);
END
definer: root@localhost
created: 2007-07-23 18:58:39
modified: 2007-07-23 18:58:39
sql_mode:
comment:
1 row in set (0.00 sec)
mysql>
mysql> drop function myFunction;
Query OK, 0 rows affected (0.00 sec)
mysql>
mysql></source>

== To see all of the functions across all databases, use the SHOW FUNCTION STATUS command==

<p>\G switch from the mysql client utility to display the results in rows, rather than in columns.</p>



<source lang="sql">
mysql>
mysql> DELIMITER //
mysql>
mysql> CREATE FUNCTION myFunction (item_sum DECIMAL(10,2))
-> RETURNS DECIMAL(10,1)
-> BEGIN
->
->
-> RETURN ROUND(item_sum,1);
->
-> END
-> //
Query OK, 0 rows affected (0.02 sec)
mysql> DELIMITER ;
mysql>
mysql> select myFunction(123.12);
+--------------------+
| myFunction(123.12) |
+--------------------+
| 123.1 |
+--------------------+
1 row in set (0.00 sec)
mysql>
mysql>
mysql> SHOW FUNCTION STATUS\G
*************************** 1. row ***************************
Db: test
Name: delivery_day_shipping
Type: FUNCTION
Definer: root@localhost
Modified: 2007-07-23 17:17:21
Created: 2007-07-23 17:17:21
Security_type: DEFINER
Comment:
*************************** 2. row ***************************
Db: test
Name: myFunction
Type: FUNCTION
Definer: root@localhost
Modified: 2007-07-23 18:58:39
Created: 2007-07-23 18:58:39
Security_type: DEFINER
Comment:
2 rows in set (0.01 sec)
mysql>
mysql>
mysql> drop function myFunction;
Query OK, 0 rows affected (0.00 sec)
mysql>
mysql></source>

== Use the SHOW CREATE FUNCTION command==



<source lang="sql">
mysql>
mysql>
mysql> DELIMITER //
mysql>
mysql> CREATE FUNCTION myFunction (item_sum DECIMAL(10,2))
-> RETURNS DECIMAL(10,1)
-> BEGIN
->
->
-> RETURN ROUND(item_sum,1);
->
-> END
-> //
Query OK, 0 rows affected (0.02 sec)
mysql> DELIMITER ;
mysql>
mysql> select myFunction(123.12);
+--------------------+
| myFunction(123.12) |
+--------------------+
| 123.1 |
+--------------------+
1 row in set (0.00 sec)
mysql>
mysql>
mysql>
mysql> SHOW CREATE FUNCTION test.myFunction\G
*************************** 1. row ***************************
Function: myFunction
sql_mode:
Create Function: CREATE DEFINER=`root`@`localhost` FUNCTION `myFunction`(item_sum DECIMAL(10,2)) RETURNS decimal(10,1)
BEGIN
RETURN ROUND(item_sum,1);
END
1 row in set (0.00 sec)
mysql>
mysql> drop function myFunction;
Query OK, 0 rows affected (0.00 sec)
mysql>
mysql></source>

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в 13:44, 26 мая 2010

Admin: 1 версия