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SQL script to Fetching Tables list holding more data

 

There may be times when we need to restore a database from a non-production or production environment for troubleshooting purposes, and we may encounter a DB size issue or need to know a list of tables with large amounts of data in order to enable purging them.


This query returns a list of tables that contain large amounts of data in sequential order. 


Query to Execute in SQL

SELECT s.Name AS SchemaName

            ,t.Name AS TableName

            ,p.rows AS RowCounts

            ,CAST(ROUND((SUM(a.used_pages) / 128.00), 2) AS NUMERIC(36, 2)) AS Used_MB

            ,CAST(ROUND((SUM(a.total_pages) - SUM(a.used_pages)) / 128.00, 2) AS NUMERIC(36, 2)) AS Unused_MB

            ,CAST(ROUND((SUM(a.total_pages) / 128.00), 2) AS NUMERIC(36, 2)) AS Total_MB

FROM sys.tables t

INNER JOIN sys.indexes i ON t.OBJECT_ID = i.object_id

INNER JOIN sys.partitions p ON i.object_id = p.OBJECT_ID

            AND i.index_id = p.index_id

INNER JOIN sys.allocation_units a ON p.partition_id = a.container_id

INNER JOIN sys.schemas s ON t.schema_id = s.schema_id

--WHERE t.name LIKE '%staging%'

GROUP BY t.Name

            ,s.Name

            ,p.Rows

ORDER BY Total_MB DESC


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