ÄÚÁª SQL PL(Inline SQL PL)
----start
ͨ³£SQL PLÖ»ÄÜʹÓÃÔÚ´æ´¢¹ý³Ì¡¢´¥·¢Æ÷¡¢Óû§×Ô¶¨Ò庯ÊýÖУ¬µ«ÊÇÓÐÒ»²¿·ÖSQL PLÒ²¿ÉÒÔÖ±½ÓÔÚÃüÁîÐÐ±à¼Æ÷»ò½Å±¾ÖÐʹÓã¬ËüÃÇÊÇ£º
DECLARE <variable>
SET
CASE
FOR
GET DIAGNOSTICS
GOTO
IF
RETURN
SIGNAL
WHILE
ITERATE
LEAVE
ÒÔÏÂSQL PL²»ÄÜÖ±½ÓÔÚÃüÁîÐÐ±à¼Æ÷»ò½Å±¾ÖÐʹÓã¬ËüÃÇÖ»ÄÜÔÚ´æ´¢¹ý³Ì¡¢´¥·¢Æ÷¡¢Óû§×Ô¶¨Ò庯ÊýÖÐʹÓãº
ALLOCATE CURSOR
ASSOCIATE LOCATORS
DECLARE <cursor>
DECLARE ...HANDLER
PREPARE
EXECUTE
EXECUTE IMMEDIATE
LOOP
REPEAT
RESIGNAL
CALL
COMMIT/ROLLBACK
ʾÀý£º
--Á¬½ÓÊý¾Ý¿â
CONNECT TO SAMPLE!
--ÄÚÁªSQL PL
BEGIN
DECLARE I INT DEFAULT 1;
DECLARE NUM INT DEFAULT 0;
SET NUM=0;
WHILE I<=10
DO
SET NUM=NUM+I;
SET I=I+1;
END WHILE;
END!
--¹Ø±ÕÁ¬½Ó
CONNECT RESET!
µ÷ÓÃʾÀý£º
½«Ê¾ÀýµÄÄÚÈݱ£´æÎªc:\test.sql,È»ºóÔÚDB2 ÃüÁî´°¿ÚÖÐÖ´ÐÐÈçÏÂÃüÁî
db2 -td! -vf c:\test.sql
----¸ü¶à²Î¼û£ºSQL PL ¼ò½é
----ÉùÃ÷£º×ªÔØÇë×¢Ã÷³ö´¦¡£
----last updated 2010.2.9
----written by wave at 2010.2.9
----end
Ïà¹ØÎĵµ£º
DB2 SQL PL
SQL PLÊÇDB2ËùÖ§³ÖµÄ¹ý³Ì»¯ÓïÑÔ£¬ËüÊÇSQL/PSM±ê×¼µÄÒ»¸ö×Ó¼¯¡£Æä¸ù¾ÝÓ¦Ó÷¶Î§²»Í¬£¬ÓÖ·ÖΪInline SQL PL£¬Embeded SQL PLºÍCompiled SQL PL¡£
Inline SQL PL
ÊÊÓ÷¶Î§£º´¥·¢Æ÷¡¢º¯ÊýºÍ·½·¨£¬Ö§³Ö²¿·ÖSQL PL£¬Ê¹ÓÃʱҪעÒâһЩÏÞÖÆ
Óï·¨¹æÔò£ºBEGIN ATOMIC ... END
Embeded SQL PL
ÊÊÓ÷¶Î§£ºÇ¶Èëʽ£¬Åäº ......
ÏÂÁÐÓï¾ä²¿·ÖÊÇMssqlÓï¾ä£¬²»¿ÉÒÔÔÚaccessÖÐʹÓá£
SQL·ÖÀࣺ
DDL—Êý¾Ý¶¨ÒåÓïÑÔ(CREATE£¬ALTER£¬DROP£¬DECLARE)
DML—Êý¾Ý²Ù×ÝÓïÑÔ(SELECT£¬DELETE£¬UPDATE£¬INSERT)
DCL—Êý¾Ý¿ØÖÆÓïÑÔ(GRANT£¬REVOKE£¬COMMIT£¬ROLLBACK)
Ê×ÏÈ,¼òÒª½éÉÜ»ù´¡Óï¾ä:
1¡¢ËµÃ÷£º´´½¨Êý¾Ý¿â
CREATE DATABASE database-nam ......
SQL³£Ó÷ÖÒ³µÄ°ì·¨:
±íÖÐÖ÷¼ü±ØÐëΪ±êʶÁУ¬[ID] int IDENTITY (1,1)
1.·ÖÒ³·½°¸Ò»£º(ÀûÓÃNot InºÍSELECT TOP·ÖÒ³)
Óï¾äÐÎʽ£º
SELECT TOP Ò³¼Ç¼ÊýÁ¿ *
from ±íÃû
WHERE (ID NOT IN
(SELECT TOP (ÿҳÐÐÊý*(Ò³Êý-1)) ID
from ±íÃû
ORDER BY ID))
ORDER BY ID
//×Ô ......
Êý¾Ý¿âµÄÐÔÄܲâÊÔ¿ÉÒÔ°ïÖúÄãÌáǰ֪µÀÄãµÄϵͳµÄ¸ºÔØÄÜÁ¦£¬¿ÉÒÔ°ïÖúÄã¸Ä½øÏµÍ³µÄʵʩ»òÉè¼Æ£¬¿ÉÒÔ°ïÖúÄãÈ·¶¨Ò»Ð©Éè¼ÆºÍ±à³ÌÔÔò. µ«ÊÇ£¬ÕâÀïÃæÒ²ÓÐÏÝÚå. Èç¹û²»Ð¡ÐÄ£¬Äã»á×Ô¼º°Ñ×Ô¼ºÏݽøÈ¥£¬È´×îÖÕ²»Ã÷°×ÊÇʲôÔÒò. ÕâÀÎÒÄÃһλÏÈÉúΪÀý£¬À´¿´¿´ËûÔõô×Ô¼º°Ñ×Ô¼º¸ãºýÍ¿µÄ.
×î½ü, ÏëÆðÔÚ´æ´¢¹ý³ÌÖо¿¾¹ÊÇʹÓÃÁÙʱ±í»¹ÊÇÊ ......