×ðÁú¿­Ê±

sqlÖÐgroupbyºÍorderbyÇø±ð

groupby ÓÃÓÚ¾ÛºÏÊý¾Ý  £¬¶ø orderby ÓÃÓÚÅÅÐòÊý¾Ý¡£groupby ·µ»Ø×é  £¬¶ø orderby ·µ»ØÅÅÐòºóµÄÐС£groupby ¿ÉÒÔ°üÀ¨¾ÛºÏº¯Êý  £¬¶ø orderby ¿ÉÒÔ°üÀ¨Í¨ÀýÁС£

GroupBy Óë OrderBy ÔÚ SQL ÖеÄÇø±ð

GroupBy

½«¾ßÓÐÏàֵͬµÄÐÐ×éºÏµ½Ò»¸ö·Ö×éÖÐ

Ä¿µÄ£º»ã×Ü»ò¾ÛºÏÊý¾Ý

Óï·¨£º

SELECT column_name(s)
FROM table_name
GROUP BY column_name

µÇ¼ºó¸´ÖÆ

OrderBy

¶ÔЧ¹û¼¯°´Ö¸¶¨ÁеÄÖµ¾ÙÐÐÅÅÐò

Ä¿µÄ£º×éÖ¯ºÍÏÔʾÊý¾Ý

Óï·¨£º

SELECT column_name(s)
FROM table_name
ORDER BY column_name [ASC | DESC]

µÇ¼ºó¸´ÖÆ

Çø±ð

ÓÃ;£º GroupBy ÓÃÓÚ¾ÛºÏÊý¾Ý  £¬¶ø OrderBy ÓÃÓÚÅÅÐòÊý¾Ý¡£

Ч¹û¼¯£º GroupBy ·µ»Ø×é  £¬¶ø OrderBy ·µ»ØÅÅÐòºóµÄÐС£

ÁУº GroupBy ¿ÉÒÔ°üÀ¨¾ÛºÏº¯Êý  £¬¶ø OrderBy ¿ÉÒÔ°üÀ¨Í¨ÀýÁС£

ʾÀý

¼ÙÉèÓÐÒ»ÕÅÃûΪ “Sales” µÄ±í  £¬ÆäÖаüÀ¨ÒÔÏÂÊý¾Ý£º

Product Sales
Apple 100
Banana 50
Apple 75
Banana 25
Orange 120

GroupBy ʾÀý£º

SELECT Product, SUM(Sales) AS TotalSales
FROM Sales
GROUP BY Product;

µÇ¼ºó¸´ÖÆ

Ч¹û£º

Product TotalSales
Apple 175
Banana 75
Orange 120

OrderBy ʾÀý£º

SELECT * FROM Sales
ORDER BY Sales DESC;

µÇ¼ºó¸´ÖÆ

Ч¹û£¨°´ÏúÁ¿½µÐòÅÅÐò£©£º

Product Sales
Orange 120
Apple 100
Apple 75
Banana 50
Banana 25

ÒÔÉϾÍÊÇsqlÖÐgroupbyºÍorderbyÇø±ðµÄÏêϸÄÚÈÝ  £¬¸ü¶àÇë¹Ø×¢±¾ÍøÄÚÆäËüÏà¹ØÎÄÕ£¡

ÃâÔð˵Ã÷£ºÒÔÉÏչʾÄÚÈÝȪԴÓÚÏàÖúýÌå¡¢ÆóÒµ»ú¹¹¡¢ÍøÓÑÌṩ»òÍøÂçÍøÂçÕûÀí  £¬°æȨÕùÒéÓë±¾Õ¾ÎÞ¹Ø  £¬ÎÄÕÂÉæ¼°¿´·¨Óë¿´·¨²»´ú±í×ðÁú¿­Ê±ÂËÓÍ»úÍø¹Ù·½Ì¬¶È  £¬Çë¶ÁÕß½ö×ö²Î¿¼¡£±¾ÎĽӴýתÔØ  £¬×ªÔØÇë˵Ã÷À´ÓÉ¡£ÈôÄúÒÔΪ±¾ÎÄÇÖÕ¼ÁËÄúµÄ°æȨÐÅÏ¢  £¬»òÄú·¢Ã÷¸ÃÄÚÈÝÓÐÈκÎÉæ¼°ÓÐÎ¥¹«µÂ¡¢Ã°·¸Ö´·¨µÈÎ¥·¨ÐÅÏ¢  £¬ÇëÄúÁ¬Ã¦ÁªÏµ×ðÁú¿­Ê±ÊµÊ±ÐÞÕý»òɾ³ý¡£

Ïà¹ØÐÂÎÅ

ÁªÏµ×ðÁú¿­Ê±

18523999891

¿É΢ÐÅÔÚÏß×Éѯ

ÊÂÇéʱ¼ä£ºÖÜÒ»ÖÁÖÜÎå  £¬9:30-18:30  £¬½ÚãåÈÕÐÝÏ¢

QR code
¡¾ÍøÕ¾µØͼ¡¿¡¾sitemap¡¿