#group by

După ce am definit grupuri cu cuvântul cheie GROUP BY, putem selecta mai multe informații despre fiecare dintre ele, de exemplu: câte persoane (rânduri) există în cadrul fiecărei familii (grup de rânduri)? SELECT lastname, count(*) -- count() este o funcție care numără valori sau rânduri FROM person GROUP BY lastname; Vedem că în micul nostru exemplu de bază de date există o familie cu trei…

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Laravel Eloquent Query - Laravel Group By with Order By Desc

Select

I.NAME [ADI], I.CODE [KODU],MONTH(S.DATE_)Ay, sum((S.AMOUNT)) Satış

FROM LG_001_05_STLINE S

JOIN LG_001_ITEMS I ON I.LOGICALREF=S.STOCKREF

WHERE LINETYPE=0 AND S.TRCODE=8

GROUP BY CUBE(I.CODE,I.NAME, MONTH(S.DATE_) )

==============================================================================

Select

I.NAME AS ADI, I.CODE AS KODU,MONTH(S.DATE_)Ay, sum((S.AMOUNT)) Satış

FROM LG_001_05_STLINE S

JOIN LG_001_ITEMS I ON I.LOGICALREF=S.STOCKREF

WHERE LINETYPE=0 AND S.TRCODE=8

GROUP BY ROLLUP(I.CODE,I.NAME, MONTH(S.DATE_))

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The SQL GROUP BY clause is used in conjunction with the SELECT statement to organize the same data into groups. This GROUP BY clause follows the WHERE clause in the SELECT statement. Syntax SELECT columnname(s) FROM tablename WHERE condition GROUP BY columnname(s) ORDER BY columnname(s);   Example Let’s take a example table…

LINQ(링크) group by , join

여러개의 데이터 범위 지정하기 잘 알다시피 LINQ 쿼리식의 from 절은 검색할 데이터의 범위를 지정하는 역할을 합니다.그럼 만약에 지정한 데이터 범위 내에서 한번 더 데이터 범위를 지정하려면 어떻게 해야할까요?그때에는 from 절을 중첩해서 사용할수 있습니다. Student[] StudentList = { new Student() { name = "A씨", score = new int[]{88, 99, 66, 91} }, new Student() { name = "B씨", score = new int[]{78, 67, 89, 51} }, new Student() { name = "C씨", score = new int[]{38, 73, 100, 44} } }; var Students = from…

SQL HAVING Clause and GROUP BY

The SQL Having clause is used to filter summary results from a GROUP BY.  It specifies the search condition for the group or aggregate.

SQL HAVING is only used with SELECT.  It is mostly used when a GROUP BY is present, if one isn’t there is an implicit single aggregated group.

When constructing a SELECT statement using HAVING the order is:

SELECT columnlist FROM table WHERE condition GROUP…

SQL Server Tabloların Özetlenmesi

Veri tabanı sistemlerin sağladığı özelliklerden biri de tabloların özet bilgi halinde sunulabilmesi imkanıdır. Bu özet bilgi tekniklerinden biri de kayıtların belli kriterlere göre gruplanabilmesidir. SQL Server sisteminde gruplama işlemi GROUP BYkomutu ile yapılabilmektedir. Gruplama işlemi sonucunda her grup için bir satır veri dönecektir. SQL Server üzerinde yapılabilecek gruplama işlemi…