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Basic data dictionary

  1. Summary of tables:
  2. Data Dictionary

Available space on server

EXEC master..xp_fixeddrives

Helpdb

sp_helpdb 'dbName'

Spaceused

use dbName
sp_spaceused

Data Dictionary

Summary of tables

use dbName
SELECT
	s.[Name] as [Schema],
	t.[Name]  as [Table],
	p.[Rows] AS [# Rows],
	(SUM(a.total_pages) * 8)/1024 AS [Total Space MB],
--    (SUM(a.used_pages) * 8)/1024 AS [Used Space MB],
	((SUM(a.total_pages) - SUM(a.used_pages)) * 8/1024) AS [Unused Space MB],
	case when p.rows > 0 then ((SUM(a.used_pages)*8000 ) / p.rows) else 0 end as [Bytes Per Row]
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
LEFT OUTER JOIN
	sys.schemas s ON t.schema_id = s.schema_id
WHERE
	t.NAME NOT LIKE 'dt%'
	AND t.is_ms_shipped = 0
	AND i.OBJECT_ID > 255
GROUP BY
	t.Name, s.Name, p.Rows
ORDER BY
	1

Summary of columns

use dbName
SELECT
	schema_name(so.[schema_id]) as [Schema],
	so.[name] AS [Table],
	sc.[name] AS [Column],
	st.[name] AS [Type],
	sc.[max_length] AS [Size]
FROM
	sys.objects so INNER JOIN sys.columns sc
ON 	so.object_id = sc.object_id INNER JOIN sys.types st
ON 	st.system_type_id = sc.system_type_id
AND	st.name != 'sysname'
-- AND st.Name like '%Person%' -- Filter by table if you wish
-- AND schema_name(so.[schema_id]) like '%dbo%' -- Filter by schema
WHERE
	so.type = 'U'
ORDER BY
	1,2,3

Also

- relationships
- indexes
- statistics
- views
- stored procedures
- summaries of tables etc

Formatted data for table sizes

This is the same as the first query above, but it also formats the numbers to be more readable (via a CTE and Format)

with Summary as (
	SELECT
		s.[Name] as [Schema],
		t.[Name]  as [Table],
		p.[Rows] AS [Rows],
		SUM(a.total_pages) AS [TotalPages],
		SUM(a.used_pages) as [UsedPages],
		SUM(a.total_pages) - SUM(a.used_pages) as [UnusedPages],
		case when [rows] > 0 then (SUM(a.used_pages) * 1.0 / p.[rows]) else 0 end as [PagesPerRow]
	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
	LEFT OUTER JOIN
		sys.schemas s ON t.schema_id = s.schema_id
	WHERE
		t.NAME NOT LIKE 'dt%'
		AND t.is_ms_shipped = 0
		AND i.OBJECT_ID > 255
	GROUP BY
		t.Name, s.Name, p.Rows
)
Select
	[Schema],
	[Table],
	FORMAT([Rows],'#,0') as [Rows],
	FORMAT([TotalPages]*8.0/1024,'#,0.0') as [Total Space MB],
	FORMAT([TotalPages]*8.0/(1024*1024),'#,0.0') as [Total Space GB],
	FORMAT([UnusedPages]*8.0/1024,'#,0.0') as [Unused Space MB],
	FORMAT(PagesPerRow * 8.0, '#,0.0') as [Avg KB/Row],
	FORMAT(PagesPerRow * 8.0/(1024), '#,0.0') as [Avg MB/Row]
from
Summary
	ORDER BY		[TotalPages] desc, 7 desc

See also