SQL Server – Minimum Row Count

sql server

I have a stored procedure that allows users to pass in parameters.

SELECT * 
FROM Table1
WHERE columnA =@paramA, ColumnB=@paramB....

I need to hide the results if there are less than 10 rows, but return them if there are more than 10. Is there a clean way to do this? Any help would be great.

Best Answer

You can use count(*) over() to make sure your result set has that many rows.

You didn't say what to do if the rows = 10, only > or <, so you may need to change the operand to >= based on what you want.

DB FIDDLE

select *
into mytable
from (select 'X' as c1) x
cross apply (values(1),(2),(3),(4),(5),(6),(7),(8),(9),(10))as y(Y)

select * from mytable

--change the 10 to 11 to see it not return
select * from
(
select *, COUNT(*) OVER() CT
from mytable
where c1 = 'X'
) sub
where CT > 10

Related Solutions

Sql-server – How to avoid select combinations created with multiple parameters (with value or without value) passed in to stored procedures for a select in sql

Something like

WHERE
   (@p1 IS NULL OR SomeCol1 = @p1)
   AND
   (@p2 IS NULL OR SomeCol2 = @p2)
   AND
   (@p3 IS NULL OR SomeCol3 = @p3)
   AND
   (@p4 IS NULL OR SomeCol4 = @p4)

This will probably run slower then using separate SELECTs separated by IF. However, you do have 16 permutation. So I'd probably combined both techniques:

IF (common combination of NULL parameters #1)
 SELECT ...
ELSE IF (common combination of NULL parameters #2)
 SELECT ...
ELSE 
 SELECT using WHERE above

SQL Server – Stored Procedure Not Showing Results

You need to split your parameters into rows and use where ... in as a check.

Using a split function like this one your code could look like this.

CREATE PROCEDURE [dbo].[sp_tst_CSENG_JulieCapitalHours]
    @StartDate DATETIME ,
    @EndDate DATETIME ,
    @ProjHomeGrp NVARCHAR(MAX) ,
    @ProjHier NVARCHAR(MAX)
AS 
BEGIN

    DECLARE @ProjHomeGrpTbl TABLE (Value NVARCHAR(4))

    INSERT INTO @ProjHomeGrpTbl(Value)
    SELECT LTRIM(RTRIM(s))
    FROM dbo.Split(',', @ProjHomeGrp);

    DECLARE @ProjHierTbl TABLE (Value NVARCHAR(5))

    INSERT INTO @ProjHierTbl(Value)
    SELECT LTRIM(RTRIM(s))
    FROM dbo.Split(',', @ProjHier);

    SELECT  [Capital Project] ,
            [Capital Task] ,
            ResourceName ,
            ProjectName ,
            [Project Home Group] ,
            ActualWork ,
            TimeByDay ,
            ResourceStandardRate ,
            ActualWork * ResourceStandardRate AS Dollars ,
            [Project Hierarchy]
    FROM    [IR.CapOnly]
    WHERE   ( TimeByDay >= @StartDate )
            AND ( [Project Home Group] in (SELECT Value FROM @ProjHomeGrpTbl) )
            AND ( TimeByDay <= @EndDate )
            AND ( ActualWork > 0 )
            AND ( [Project Hierarchy] in (SELECT Value FROM @ProjHierTbl) )
    ORDER BY ProjectName ,
            ResourceName

END

Best Answer

Related Solutions

Sql-server – How to avoid select combinations created with multiple parameters (with value or without value) passed in to stored procedures for a select in sql

SQL Server – Stored Procedure Not Showing Results

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