sqlÊý¾Ý¿â²éѯ
ÈçºÎ°ÑÉÏÃæÊý¾Ý¿âÀïµÄtitle ÖØ¸´µÄÏî Ö»ÏÔʾһÌõ£¬²¢ÇÒÖØ¸´µÄÏî µÄ Amount µÄÖµÏà¼Ó
¿ÉÒÔ´Ó´úÂëºÍsqlÓï¾äÁ½·½ÃæÌÖÂÛ£¬ÕâÀïµÄÊý¾ÝÖ»ÊÇÊý¾Ý¿âµÄÒ»²¿·Ö£¬ÀïÃæ»¹ÓкܶàÖØ¸´Ïî
×îºÃ¸ø³ö»ù±¾´úÂ룬Ñо¿ºÃ¾Ã£¬Ã»Óгɹû
select title,sum(amount) as amount from table group by title
¿ÉÒÔ½áÌùÁË
select title,sum(amount) amount from table_name group by title
select title,sum(amount) amount from table_name group by title
ÄãÓпտ´Ï group by µÄÓ÷¨°É·····Â¥Éϵͼ½â¾öÁË··
------------------------------------------------------------------
¡¾ÃÎÏëÒ»ÍÅ¡¿QQȺ¿ªÍÅ¿ªÊ¼ÕÐÈËÀ²£¬·²½øÍŵͼ»Ø»ñÔùÖ¯ÃÎVIPºÍadminVIP½Ì³ÌÒ»Ì×£¡
ÒÔ¼°¸÷ÖÖ´øÍêÕûºǫ́£¬¾²âÊÔÍêÕû½çÃæÆ¯ÁÁµÄÔ´Â룡
±¾ÈºÒÔÌÖÂÛasp/aspnet/sql/oracleΪÖ÷£¬ÆäËûΪ¸¨£¡Ò²»¶Ó¸÷ÍøÕ¾¸ßÈËǰÀ´Ö¸µ¼£¡
QQȺºÅ ¡¾51587637¡¿
Óà sum() ºÍ group by
¾ÍÄܽâ¾ö¡£Õâ¸öÎÊÌâ¡£ºÜ¼òµ¥µÄ¡£
ÓÃASP´úÂëµÄ ¿ØÖÆÒ»ÏÂÑ»·¾Í¿ÉÒÔÁË£¡ Ò²¾ÍÊÇ ÉèÖÃÒ»¸ö±äÁ¿ ÿ´Î±äÁ¿ Ñ»·Ò»Ï¾ͰѸñäÁ¿±ä³ÉÄãÏëÒªµÄTITLE È»ºóºÍrs.movenext µÄ rs("title")×ö±È½Ï =¾ÍÊä³ö""·ñÔòÊä³ö
һ¥ÒѾ¸øÁË´ð°¸ÁË¡£ÕæµÄ¿ÉÒÔ½áÌùÁË¡£
²»ºÃÒâ˼£¬´ó¼Ò»Ø´ðµÄ¶¼²»ÍêÈ«ÕýÈ·£¬ÎÒ×Ô¼º½â¾öÁË£¬¾ßÌåµÄ×Ô¼º¶¼ÍüÁË£¬ºÃ¾ÃûÀ´csdnÁË£¬Ö»¸øÐÁ¿à·Ö
û˵Çå³þ£¬ÒòΪ×îÉÏÃæµÄÕâ¸ö±íÊǶ¯Ì¬»ñÈ¡µÄÈ»ºóÔٲ飬ËùÒÔ¡£¡£¡£
Ïà¹ØÎÊ´ð£º
ÎÒÓжà¸ö±íA B C ½á¹¹ÊÇÒ»ÑùµÄ£¬¶¼ÓÐ2¸ö×Ö¶ÎnameºÍcontent,ÎÒÒªËÑË÷ËùÒÔ±íËùÓÐ×Ö¶ÎÖаüº¬¡°Öйú¡±µÄÄÚÈÝ Õâ¸öSQLÓï¾äÔõôд
ÈçºÎ½«¶à¸ö±íµÄ²éѯ½á¹ûÁ¬³ÉÒ»¸ö±í Õâ¸öSQLÓï¾äÔõôд ±íµÄ½á¹¹ÊÇÒ»ÑùµÄ
ÀýÈç£ ......
±íÈçÏÂ
½ÌÊÒID ×ùλÊý ¿ªÊ¼Ê±¼ä ½áÊøÊ±¼ä 2009Äê1ÔÂ1ÈÕ 2009Äê1ÔÂ2ÈÕ 2009Äê1ÔÂ3ÈÕ
101 50 08£º00 08£º30 30 40 50
101 50 09£º00 ......
select convert(varchar(50),cast(convert(numeric(18,2),1275674000000/100000000)as real))+'ÒÚ'
select cast(convert(numeric(18,2),1275674000000/100000000)as real)
ΪʲôÉÏÒ»¸öÓÃvarcharת»»ºó¾ÍÖ»±£ÁôÁËÒ ......
ÏÖÔÚÓÐÒ»ORACLEÖеÄSQLÓï¾ä£¬ÐèÒªÒÆÖ²µ½DB2ÖУ¬ÇëÎʸÃSQL¸ÄÈçºÎд
ORACLEÖУº
select floor(months_between(date1,date2)) from A
date1,date2·Ö±ðΪ±íÖеÄÁ½¸ö×Ö¶Î £¬¶¼ÎªÈÕÆÚÐÍ
DB2ÖÐÈçºÎʹÓÃÐ ......
ÎÒÒªµÃµ½Ò»¸ö×Ö·û´®È磺
sdfk|||sgts
sdfsfd|||rgreg
wrfw|||sefw
¾ÍÊÇÒªµÃµ½|||ºóÃæµÄ×Ö·û´®£¬ÓÐʲôº¯ÊýÂð£¿ÔõôÓÃÄØ£¿Ð»Ð»£¡
SQL code:
select
right(col,len(col)-charindex('|||',col)-2)
f ......