Finding Max values of column for all the tables for SQL Server

 

DECLARE @DatabaseName VARCHAR(100)
DECLARE @SchemaName VARCHAR(100)
DECLARE @TableName VARCHAR(100)
DECLARE @ColumnName VARCHAR(100)
DECLARE @FullyQualifiedTableName VARCHAR(500)
DECLARE @DataType VARCHAR(50)

–Create Temp Table to Save Results
IF OBJECT_ID(‘tempdb..#Results’) IS NOT NULL
    DROP TABLE #Results

CREATE TABLE #Results (
    DatabaseName VARCHAR(100)
    ,SchemaName VARCHAR(100)
    ,TableName VARCHAR(100)
    ,ColumnName VARCHAR(100)
    ,ColumnDataType VARCHAR(50)
    ,MaxValue VARCHAR(50)
    ,MinValue VARCHAR(50)
    )

DECLARE Cur CURSOR
FOR
SELECT DB_Name() AS DatabaseName
    ,s.[name] AS SchemaName
    ,t.[name] AS TableName
    ,c.[name] AS ColumnName
    ,'[‘ + DB_Name() + ‘]’ + ‘.[‘ + s.NAME + ‘].’ + ‘[‘ + T.NAME + ‘]’ AS FullQualifiedTableName
    ,d.[name] AS DataType
FROM sys.schemas s
INNER JOIN sys.tables t ON s.schema_id = t.schema_id
INNER JOIN sys.columns c ON t.object_id = c.object_id
INNER JOIN sys.types d ON c.user_type_id = d.user_type_id
WHERE  is_identity = 1 –and WHERE i.is_primary_key = 1

OPEN Cur

FETCH NEXT
FROM Cur
INTO @DatabaseName
    ,@SchemaName
    ,@TableName
    ,@ColumnName
    ,@FullyQualifiedTableName
    ,@DataType

WHILE @@FETCH_STATUS = 0
BEGIN
    DECLARE @SQL VARCHAR(MAX) = NULL

    SET @SQL = ‘ Select ”’ + @DatabaseName + ”’ AS DatabaseName, ”’ + @SchemaName + ”’ AS TableName,
      ”’ + @TableName + ”’ AS SchemaName,
      ”’ + @ColumnName + ”’ AS ColumnName,
      ”’ + @DataType + ”’ AS ColumnName,
      (Select MAX(‘ + @ColumnName + ‘) from ‘ + @FullyQualifiedTableName + ‘ with (nolock))
      AS MaxValue,
      (Select MIN(‘ + @ColumnName + ‘) from ‘ + @FullyQualifiedTableName + ‘ with (nolock))
      AS MaxValue’

    PRINT @SQL

    INSERT INTO #Results
    EXEC (@SQL)

    FETCH NEXT
    FROM Cur
    INTO @DatabaseName
        ,@SchemaName
        ,@TableName
        ,@ColumnName
        ,@FullyQualifiedTableName
        ,@DataType
END

CLOSE Cur

DEALLOCATE Cur

SELECT *
FROM #Results
order by TableName
    –drop table #Results

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