doublon sql
-- exemple
-- recherche doublon sur la table demande pour les champs :
-- nom_demandeur, prenom_demandeur, actif
SELECT COUNT(*) AS nbr_doublon, nom_demandeur, prenom_demandeur, actif
FROM demandes
GROUP BY nom_demandeur,prenom_demandeur,actif
HAVING COUNT(*) > 1ms sql row_number over partition
USE AdventureWorks2012;
GO
SELECT FirstName, LastName, TerritoryName, ROUND(SalesYTD,2,1) AS SalesYTD,
ROW_NUMBER() OVER(PARTITION BY TerritoryName ORDER BY SalesYTD DESC)
AS Row
FROM Sales.vSalesPerson
WHERE TerritoryName IS NOT NULL AND SalesYTD <> 0
ORDER BY TerritoryName;how to use row number function in sql server
-- Uses AdventureWorks
SELECT ROW_NUMBER() OVER(ORDER BY SUM(SalesAmountQuota) DESC)
AS RowNumber,
FirstName, LastName,
CONVERT(varchar(13), SUM(SalesAmountQuota),1) AS SalesQuota
FROM dbo.DimEmployee AS e
INNER JOIN dbo.FactSalesQuota AS sq
ON e.EmployeeKey = sq.EmployeeKey
WHERE e.SalesPersonFlag = 1
GROUP BY LastName, FirstName;create row number in sql
SELECT t.A, t.B, t.C, ROW_NUMBER() OVER (ORDER BY t.A) as newId
FROM dbo.tableZ AS t
ORDER BY t.A;Row Number is sql server
ROW_NUMBER() OVER (ORDER BY 'Column_Name' DESC) as ROW_NUMBER
select ROW_NUMBER() OVER(PARTITION BY WorkOrderID ORDER BY WorkOrderID ASC)
AS Row#, * from TableNamegroup_concat sql server
STRING_AGG ( expression, separator ) [ <order_clause> ]
<order_clause> ::=
WITHIN GROUP ( ORDER BY <order_by_expression_list> [ ASC | DESC ] )
SELECT STRING_AGG(Genre, ',') AS Result
FROM Genres;
Result:
Result
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