Use one CTE many times
A CTE
is basically a disposable view. It only persists for a single statement, and then automatically disappears.
Your options include:
Redefine the
CTE
a second time. This is as simple as copy-paste fromWITH...
through the end of the definition to before yourSET
.Put your results into a
#temp
table or a@table
variableMaterialize the results into a real table and reference that
Alter slightly to just
SELECT COUNT
from your CTE:
.
SELECT @total = COUNT(*)FROM Players p INNER JOIN Teams t ON p.IdTeam=t.Id INNER JOIN Leagues l ON l.Id=t.IdLeagueWHERE l.Id=@idleague
None of the above answers are correct... You can execute CTE once and achieve the result you want.. here is the query
ALTER PROCEDURE [dbo].[GetLeaguePlayers]( @idleague int, @pageNumber int, @pageSize int, @total int OUTPUT)ASWITH CTEPlayers AS( SELECT p.Id, p.Name, t.Name AS Team FROM Players p INNER JOIN Teams t ON p.IdTeam=t.Id INNER JOIN Leagues l ON l.Id=t.IdLeague WHERE l.Id=@idleague),TotalCount AS( SELECT COUNT(*) AS Total FROM CTEPlayers),Final_Result AS( SELECT ROW_NUMBER() OVER (ORDER BY p.Name) AS RowNumber, p.Id, p.Name, t.Name AS Team, (SELECT Total FROM TotalCount) AS Total FROM CTEPlayers)SELECT Id, Name, @total = TotalFROM Final_Results cWHERE RowNumber>@pageSize*(@pageNumber-1) AND RowNumber<@pageSize*@pageNumber;
A CTE is, per definition, only valid for one statement.
You can create an inline table-valued function and then use this as often as you like. The inline function does what the name suggest; its query gets to be part of the query using it (in contrast to non-inline functions which are executed separately and used as a rowset).