»ñÈ¡sqlserverÊý¾Ý¿âÖÐËùÓп⡢±í¡¢×Ö¶ÎÃûµÄ·½·¨
»ñÈ¡sqlserverÊý¾Ý¿âÖÐËùÓп⡢±í¡¢×Ö¶ÎÃûµÄ·½·¨
2009Äê03ÔÂ12ÈÕ ÐÇÆÚËÄ ÏÂÎç 12:51
1.»ñÈ¡ËùÓÐÊý¾Ý¿âÃû:
SELECT Name from Master..SysDatabases ORDER BY Name
2.»ñÈ¡ËùÓбíÃû:
SELECT Name from DatabaseName..SysObjects Where XType='U' ORDER BY Name
XType='U':±íʾËùÓÐÓû§±í;
XType='S':±íʾËùÓÐϵͳ±í;
3.»ñÈ¡ËùÓÐ×Ö¶ÎÃû:
SELECT Name from SysColumns WHERE id=Object_Id('TableName')
access :
Èç¹û±í´æÔÚ£¬ÈçºÎµÃµ½Õâ¸ö±í£¿
SELECT *
from MSysObjects where name='ExamResultTime ' and type=1 and flags=0
//µÃµ½¸ÃÊý¾Ý¿âÖÐËùÓеıíÃû
SELECT name from MSysObjects where type=1 and flags=0
Ïà¹ØÎĵµ£º
mysql ´ó¶ÔÏó´æÈ¡:
ÀàÐÍÒ»°ãÓ¦¸ÃÓÃmediumblod,
blobÖ»ÄÜ´æ2µÄ16´Î·½¸öbyte,
mediumblodÊÇ24´Î·½,
Ò»°ãÀ´Ëµ¹»ÓÃÁË.longblobÊÇ32´Î·½ÓÐЩ´ó.
MYSQLĬÈÏÅäÖÃÖ»ÄÜ´æ1M´óСµÄÎļþ,ÒªÐÞ¸ÄÅäÖÃ,WIN°æ±¾µÄÔÚmysql.iniÎļþÖÐ
ÐÞ¸Ämax_allowed_packet,net_buffer_lengthµÈ¼¸¸ö²ÎÊý,»òÖ±½ÓSET GLOBAL varName=value.
linux°æ± ......
»·¾³£ºvs2005+sqlserver2005+PowerDesigner 12
´ò¿ªPowerDesigner 12(ÒÔϼò³Æpd)£¬Ð½¨pdm¹¤³Ì£¬ÈçͼËùʾ£º
×¢£ºdbmsÑ¡ÔñÄúĿǰÐèҪת»»µÄÀà±ð£¬ÎÒÓõÄÊÇsqlserver2005¡£
È»ºóÑ¡Ôñ²Ëµ¥¡¶Êý¾Ý¿â¡·¡¶ÏµÍ³DSN¡·£¬Ñ¡Ôñ»òÕßÌí¼ÓÄúÐèÒªµÄÊý¾Ý¿â£¬ÎÒÕâÀïÑ¡ÔñµÄÊÇsql server¡£ÈçͼËùʾ£º
½¨ºÃ ......
1¡¢ÊµÀýÒ»£º
public void SqlConnectionOpen()
{
SqlConnection myConn=new SqlConnection();
myConn.ConnectionString="server=(local);database=pubs;Trusted_Connection=yes";
......
SQLServerÖÐDatetimeÀàÐÍÊý¾ÝµÄ±È½Ï
2009Äê02ÔÂ20ÈÕ ÐÇÆÚÎå 16:40
/* ¶¨Ò忪ʼÈÕÆÚºÍ½áÊøÈÕÆÚ*/
declare @date_a datetime,@date_b datetime
set @date_a='2009-2-10'
set @date_b='2009-2-12'
/* ÔÚÈÕÆÚdate_a(°üº¬) ºÍdate_b(²»°üº¬) Ö®¼ä*/
select * from ut_article where createtime between @ ......
ÔÚSQL Server ÖвåÈëÒ»ÌõÊý¾ÝʹÓÃInsertÓï¾ä£¬µ«ÊÇÈç¹ûÏëÒªÅúÁ¿²åÈëÒ»¶ÑÊý¾ÝµÄ»°£¬Ñ»·Ê¹ÓÃInsert²»½öЧÂʵͣ¬¶øÇһᵼÖÂSQLһϵͳÐÔÄÜÎÊÌâ¡£ÏÂÃæ½éÉÜSQL ServerÖ§³ÖµÄÁ½ÖÖÅúÁ¿Êý¾Ý²åÈë·½·¨£ºBulkºÍ±íÖµ²ÎÊý(Table-Valued Parameters)¡£
ÔËÐÐÏÂÃæµÄ½Å±¾£¬½¨Á¢²âÊÔÊý¾Ý¿âºÍ±íÖµ²ÎÊý¡£
´úÂëÈçÏÂ:
--Create D ......