SQL 2005ÖÐÎÄÂÒÂëÎÊÌâ
ʹÓÃSQL SERVER2005µÄʱºòÓöµ½ÁËÖÐÎÄ×Ö·ûΪÂÒÂëµÄÇé¿ö£¬¾¹ýÑо¿·¢ÏÖ£¬ÉèÖÃSQLµÄÅÅÐò¹æÔò¿ÉÒÔ½â¾öÕâ¸öÎÊÌâ¡£
1¡¢µÇ¼·þÎñÆ÷´ò¿ªMicrosoft SQL Server Management Studio¡£
2¡¢ÔÚÒªÐ޸ĵÄÊý¾Ý¿âÉϵ¥»÷Êó±êÓÒ¼ü£¬²¢Ñ¡Ôñ“ÊôÐÔ”¡£
3¡¢ÔÚµ¯³öµÄÊý¾Ý¿âÊôÐÔ´°¿ÚÖеã»÷“Ñ¡ÔñÒ³”ÖеēѡÏ£
4¡¢½«ÅÅÐò¹æÔòÓÉĬÈϵÄSQL_Latin1_General_CP1_CI_ASÐÞ¸ÄΪChinese_PRC_CI_AS¡£
5¡¢µã»÷È·¶¨¾ÍOK¡£
varcharÐÞ¸ÄΪnvarchar
charÐÞ¸ÄΪnchar
×¢£ºÈç¹ûÎÞ·¨Ð޸ĵϰ£¬Çë³¢ÊԹرÕËùÓÐÓë´ËÊý¾Ý¿âµÄÁ¬½Ó£¬ÊµÔÚ²»ÐеϰÇëÖØÆô¶¯SQL SERVER·þÎñ¡£
Ïà¹ØÎĵµ£º
¹¤×÷ÖÐÅöµ½µÄС¼¼ÇÉ£¬±ÈÈç˵ҪÓÃÊý¾Ý±íÀïÈ¡³ö×¢²áÓû§µÄ×ÊÁÏ£¬ÐÔ±ðΪ1ÔòÏÔʾΪÄÐÉú£»ÐÔ±ðΪ2ÔòÏÔʾΪŮÉú£»ÒÔǰ¶¼ÊÇ´Ó±íÀïÈ¡³öÊý¾Ý£¬È»ºóÔÙÓôúÂë½øÐÐÅжϣ¬Îª1ÔòÏÔʾΪÄÐÉú£»Îª2ÔòÏÔʾΪŮÉú£»Æäʵµ¥ÓÃSQLÓï¾ä¾Í¿ÉÒÔ×öµ½£¬ÈçÏ£º
Ö±½ÓʹÓÃcase when else Óï¾ä
Case¾ßÓÐÁ½ÖÖ¸ñʽ¡£¼òµ¥Caseº¯ÊýºÍCaseË ......
SQlÊý¾ÝÀàÐÍ(-_-ѧSQL¾Í´ÓÊý¾ÝÀàÐÍ¿ªÊ¼°É£¡)
bit ÕûÐÍ
ÆäÖµÖ»ÄÜÊÇ0¡¢1»ò¿ÕÖµ¡£
ÕâÖÖÊý¾ÝÀàÐÍÓÃÓÚ´æ´¢Ö»ÓÐÁ½ÖÖ¿ÉÄÜÖµµÄÊý¾Ý£¬ÈçYes »òNo¡¢True »òFalse ¡¢On »òOff.
int ÕûÐÍ 4¸ö×Ö½Ú
´Ó- 2^31(-2147483648)µ½2^31 (2147483 647)Ö®¼äµÄÕûÊý¡£
´æ´¢µ½Êý¾Ý¿âµÄ¼¸ºõËùÓÐÊýÖµÐ͵ÄÊý¾ ......
±ÜÃâʹÓÃIN ²Ù×÷·û
ÓÃINд³öÀ´µÄSQLµÄÓŵãÊDZȽÏÈÝÒ×д¼°ÇåÎúÒ×¶®£¬Õâ±È½ÏÊʺÏÏÖ´úÈí¼þ¿ª·¢µÄ·ç¸ñ¡£
µ«ÊÇÓÃINµÄSQLÐÔÄÜ×ÜÊDZȽϵ͵쬴ÓORACLEÖ´ÐеIJ½ÖèÀ´·ÖÎöÓÃINµÄSQLÓë²»ÓÃINµÄSQLÓÐÒÔÏÂÇø±ð£º
¡¡ORACLEÊÔͼ½«Æäת»»³É¶à¸ö±íµÄÁ¬½Ó£¬Èç¹ûת»»²»³É¹¦ÔòÏÈÖ´ÐÐINÀïÃæµÄ×Ó²éѯ£¬ÔÙ²éѯÍâ²ãµÄ±í¼Ç ......
1.ÔÚmssql´´½¨´æ´¢¹ý³Ì,ÔÚdb->´æ´¢¹ý³Ì->н¨´æ´¢¹ý³Ì(ÓÒ¼ü)
CREATE PROCEDURE user_logon_check @username varchar(45),@userpsw varchar(45)
AS
select * from users where UserName = @username and PasswordCode = @userpsw
return 10
GO
2.ÔÚmysql´´½¨´æ´¢¹ý³Ì,ʹÓÃMysql Query Browser,ÔÚdb->±í ......
ʹÓÃLINQ to SQL½¨Ä£NorthwindÊý¾Ý¿â
ÔÚÕâ֮ǰһÆðѧ¹ýLINQ to SQLÉè¼ÆÆ÷µÄʹÓã¬ÏÂÃæ¾ÍʹÓÃÈçϵÄÊý¾ÝÄ£ÐÍ£º
µ±Ê¹ÓÃLINQ to
SQLÉè¼ÆÆ÷Éè¼ÆÒÔÉ϶¨ÒåµÄÎå¸öÀࣨProduct£¬Category£¬Customer£¬OrderºÍOrderDetail£©µÄʱºò£¬Ã¿¸öÀàÖеÄÊôÐÔ
¶¼Ó³ÉäÁËÏàÓ¦Êý¾Ý¿âÖбíµÄÁУ¬Ã¿¸öÀàµÄʵÀýÔò´ú±íÁËÊý¾Ý¿â±íÖеÄÒ»Ìõ¼Ç¼¡£ÁíÍ⣬ ......