## Data Profilng Column Functional Dependency T-SQL

 Author Message Ira Warren Whiteside SSCommitted Group: General Forum Members Points: 1634 Visits: 299 Comments posted to this topic are about the item Data Profilng Column Functional Dependency T-SQL Ira Warren Whiteside tomasz.cwajda Valued Member Group: General Forum Members Points: 53 Visits: 31 I really don't know what is showig this pie chart !This is some creasy idea to use pie chart to this data, is't it? tomasz.cwajda Valued Member Group: General Forum Members Points: 53 Visits: 31 I don't know why you make it in so complikated way.Below you can find my version of your procedure.`CREATE PROCEDURE [dbo].[ColumnDependency2] @TableName VARCHAR(128) , @Determinant VARCHAR(128) ,@Dependent VARCHAR(128) AS Declare @SQL VarChar(MAX);SELECT @SQL = 'WITH all_ AS ( SELECT '+@Determinant+' ,'+@Dependent+' ,count(*) cnt FROM '+@TableName+' GROUP BY '+@Determinant+' ,'+@Dependent+' ), fraction_ AS ( SELECT '+@Determinant+' ,max(cnt) support_count ,sum(cnt) frac_cnt FROM all_ GROUP BY '+@Determinant+' )SELECT v.'+@Determinant+' ,'+@Dependent+' ,cnt [Dependeny Counts] ,case when cnt < support_count then ''Violation Percentage'' ELSE ''Support Percentage'' end [Dependency type] ,CAST(CAST(cnt AS DECIMAL ) / frac_cnt * 100 AS DECIMAL (5, 2)) AS PercentViolationFROM all_ v ,fraction_WHERE fraction_.'+@Determinant+' = v.'+@Determinant+'ORDER BY 1, 3 DESC ';Print @SQLExec (@SQL)`and execution:`Exec ColumnDependency2 @TableName = 'Addresses', @Dependent = 'StateProvinceName', @Determinant = 'CountryRegionCode '`

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