¹ØÓÚSQLÓï¾ä
½ñÌìÐ´ÍøÕ¾µÄʱºòºÜ囧°¡£¬·¢ÏÖ²éÕÒÓû§È¨ÏÞµÄʱºòÎÞÔµÎ޹ʵÄͬһ¸öȨÏÞÖØ¸´³öÏֺܶà´Î
Ð޸ĺóµÄSQLÓï¾äÈçÏÂ
SELECT
node
.
id
,
node
.
name
,
access
.
role_id
from
think_role_user
AS
user
,
think_access
AS
access
,
think_node
AS
node
WHERE
user
.
user_id
=
5
AND
access
.
role_id
=
user
.
role_id
AND
access
.
level
=
3
AND
access
.
node_id
=
node
.
id
LIMIT
0
,
30
ÆäÖÐNODEÊÇȨÏ޽ڵ㣬ACCESSÊÇȨÏÞºÍÓû§ËùÔÚ×é¶ÔÓ¦µÄ½Úµã£¬USERÊÇÓû§ÓëÆäËùÔÚ×éÖ®¼äµÄ±í£¬ÕâÑùд³öÀ´µÄSQLÓï¾ä¾ÍÄܹ»ÕýÈ·²éѯÁË
ÎÒ·¢ÏÖÎÒ´íÎóµÄµØ·½ÊǶàÒýÈëÁËÁíÒ»¸öÎÞ¹ØµÄ±í£¬¾ÍÊÇ˵fromÀïÃæ¶à³öÀ´ÁíÒ»¸ö±í£¬Ò»¿ªÊ¼ÎÒÒÔΪûÓвî±ð£¬ºóÀ´²Å·¢ÏÖ¶àÒ»¸öÄÇÑùµÄ±í£¬Í¬Ò»¸ö²éѯ½á¹û¾Í»á¶à³öÄǸö±íµÄ½Úµã¸öÊý±¶¡£¡£¡£
¶÷£¬ºÜ¾ÃûÓÐд¹ýSQL£¬½ñÌìËãÊǸ´Ï°ÁËһϡ£ºÜ²»´í~~~~
Ïà¹ØÎĵµ£º
ϵͳ»·¾³£ºWindows 7
Èí¼þ»·¾³£ºVisual C++ 2008 SP1 +SQL Server 2005
±¾´ÎÄ¿µÄ£º±àдһ¸öº½¿Õ¹ÜÀíϵͳ
ÕâÊÇÊý¾Ý¿â¿Î³ÌÉè¼ÆµÄ³É¹û£¬ËäÈ»³É¼¨²»¼Ñ£¬µ«ÊÇ×÷ΪÎÒÓÃVC++ ÒÔÀ´±àдµÄ×î´ó³ÌÐò»¹ÊÇ´«µ½ÍøÉÏ£¬ÒÔ¹©²Î¿¼¡£ÓÃVC++ ×öÊý¾Ý¿âÉè¼Æ²¢²»ÈÝÒ×£¬µ«Ò²²»ÊDz»¿ÉÄÜ¡£ÒÔÏÂÊÇÎҵijÌÐò½çÃæ£¬ºóÃæ ......
¸Ð¾õ×Ô¼ºÊDZȽϱ¿µÄ£¬Ñ§Ï°¹ýSQLÓïÑÔ£¬µ«ÊÇÈ´·Ö²»Ì«Çå³þDDL¡¢DML¡¢DCLÓïÑÔ£¬ËùÒÔÄØ£¬½ñÌì¾Íºñ×ÅÁ³Æ¤ÎÊÁËÀÏʦ£¬ÏÖÔÚ¾Í×Ô¼ºÄ¿Ç°µÄÁ˽âÀ´×ܽáһϡ£
1¡¢DDL£¨DATA DEFINITION LANGUAGE£©Êý¾ÝÃèÊöÓïÑÔ
DDLÓï¾ä²»»á²úÉú»¹ÔÊý¾Ý£¬ËùÒÔɾ³ýµÄÊý¾ÝÒ²ÊÇÎÞ·¨»Ö¸´µÄ
CREATE - to ......
¹¦ÄÜ£º·µ»Ø×Ö·û¡¢¶þ½øÖÆ¡¢Îı¾»òͼÏñ±í´ïʽµÄÒ»²¿·Ö
Óï·¨£ºSUBSTRING ( expression, start, length )
SQL ÖÐµÄ substring º¯ÊýÊÇÓÃÀ´×¥³öÒ»¸öÀ¸Î»×ÊÁÏÖÐµÄÆäÖÐÒ»²¿·Ö¡£Õâ¸öº¯ÊýµÄÃû³ÆÔÚ²»Í¬µÄ×ÊÁÏ¿âÖв»ÍêȫһÑù£º
²ÎÊý£º
expression ×Ö·û´®¡¢¶þ½øÖÆ×Ö·û´®¡¢Î ......