Wednesday, 23 September 2009

Identifying tables in a database

If you need to identify the tables in a database including their row counts, column counts and data size try the following SQL:

USE [DatabaseNameHere] 

CREATE TABLE #temp ( 
  table_name sysname , 
  row_count INT, 
  reserved_size VARCHAR(50), 
  data_size VARCHAR(50), 
  index_size VARCHAR(50), 
  unused_size VARCHAR(50)) 

SET NOCOUNT ON 

INSERT #temp 
EXEC sp_msforeachtable 'sp_spaceused "?"' 

SELECT 
  a.table_name, 
  a.row_count, 
  COUNT(*) AS col_count, 
  a.data_size 
FROM 
  #temp a 
INNER JOIN 
  information_schema.columns b 
ON a.table_name collate database_default 
= b.table_name collate database_default 
GROUP BY 
  a.table_name, 
  a.row_count, 
  a.data_size 
ORDER BY 
  CAST(REPLACE(a.data_size, ' KB', '') AS integer) DESC 

DROP TABLE #temp

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