EMS SQL Manager for Mysql°ïÁËÎ񵀾£¬²¿·ÖÁеIJÙ×÷
ÓÉÓÚµ±³õ±íÉè¼ÆµÄ²»ºÏÀí£¬ÂýÂýµÄ·¢ÏÖÀË·ÑÐí¶à¿Õ¼ä£¬ÇÒ¶ÔÀ©Õ¹²»Àû¡£¾ö¶¨²»°ÑͬÀàÐÍÄÚÈݲ¢ÅÅÁб£´æ£¬ËùÒÔ½ñÌì°Ñ¶àÓàµÄÁмôµô£¬²¹ÔÚ±£ÁôµÄÁÐÏÂÃæ¡£
ÔÚ±íÃûµãÓÒ¼ü£¬Êý¾Ý²Ù×÷£¬µ¼³öSQL½Å±¾Êý¾Ý¡£ÕÕÌáʾ²Ù×÷£¬ÕâÀïÎÒϲ»¶µÄÊÇ¿ÉÒÔÖ¸¶¨Áе¼³ö¡£
È»ºó°Ñ²»ÐèÒªµÄ¿ÕÁÐɾµô£¬¸ÄһϲåÈëµÄÁГid_2”µÈµÈ
¸ÄºÃÖØÐµ¼È룬OK£¡
Ïà¹ØÎĵµ£º
Oracleά»¤³£ÓÃSQLÓï¾ä»ã×Ü
ÉÏһƪ / ÏÂһƪ 2008-09-04 11:25:01
²é¿´( 1991 ) / ÆÀÂÛ( 0 ) / ÆÀ·Ö( 0 / 0 )
ÈçºÎÔ¶³ÌÅжÏOracleÊý¾Ý¿âµÄ°²×°Æ½Ì¨
select * from v$version;
²é¿´±í¿Õ¼äµÄʹÓÃÇé¿ö
select sum(bytes)/(1024*1024) as free_space,tablespace_name
from dba_free_space
group by tablespace_ ......
Sql´úÂë:Powered by chenjiazi
--²éѯµ±Ì죺
select * from info where DateDiff(dd,datetime,getdate())=0
--²éѯ24СʱÄÚµÄ:
select * from info where DateDiff(hh,datetime,getDate())<=24
--infoΪ±íÃû,datetimeΪÊý ......
ÈçºÎÈÃÄãµÄSQLÔËÐеøü¿ì(תÌù)
---- ÈËÃÇÔÚʹÓÃSQLʱÍùÍù»áÏÝÈëÒ»¸öÎóÇø£¬¼´Ì«¹Ø×¢ÓÚËùµÃµÄ½á¹ûÊÇ·ñÕýÈ·£¬¶øºöÂÔ
Á˲»Í¬µÄʵÏÖ·½·¨Ö®¼ä¿ÉÄÜ´æÔÚµÄÐÔÄܲîÒ죬ÕâÖÖÐÔÄܲîÒìÔÚ´óÐ͵ĻòÊǸ´ÔÓµÄÊý¾Ý¿â
»·¾³ÖУ¨ÈçÁª»úÊÂÎñ´¦ÀíOLTP»ò¾ö²ßÖ§³ÖϵͳDSS£©ÖбíÏÖµÃÓ ......
1.·ÖÒ³·½°¸Ò»£º(ÀûÓÃNot InºÍSELECT TOP·ÖÒ³)
¡¡¡¡Óï¾äÐÎʽ£º
SELECTTOP10*fromTestTableWHERE(IDNOTIN¡¡¡¡¡¡¡¡¡¡(SELECTTOP20id¡¡¡¡¡¡¡¡fromTestTable¡¡¡¡¡¡¡¡ORDERBYid))ORDERBYIDSELECTTOPÒ³´óС*fromTestTableWHERE(IDNOTIN¡¡¡¡¡¡¡¡¡¡(SELECTTOPÒ³´óС*Ò³Êýid¡¡¡¡¡¡¡¡from±í¡¡¡¡¡¡¡¡ORDERBYid))ORDERBYID
¡¡¡¡2.·Ö ......