List Partitioned Tables And Other Info About Them

By Lori Brown | Beginner

May 04

Here is a good way to find out if any of your tables are partitioned in your database using the query below. It is important to know so that you can find out how the tables are partitioned.

— Partitioned Tables

SELECT DISTINCT t.name AS ParitionedTables

FROM sys.partitions p

INNER JOIN sys.tables t

ON p.object_id = t.object_id

WHERE p.partition_number <> 1

If you have partitioned tables here is a good way to find out how it is partitioned up.

— Get partition info

SELECT SCHEMA_NAME(o.schema_id) + ‘.’ + OBJECT_NAME(i.object_id) AS [object]

, p.partition_number AS [p#]

, fg.name AS [filegroup]

, p.rows

, au.total_pages AS pages

, CASE boundary_value_on_right

WHEN 1 THEN ‘less than’

ELSE ‘less than or equal to’ END AS comparison

, rv.value

, CONVERT (VARCHAR(6), CONVERT (INT, SUBSTRING (au.first_page, 6, 1) +

SUBSTRING (au.first_page, 5, 1))) + ‘:’ + CONVERT (VARCHAR(20),

CONVERT (INT, SUBSTRING (au.first_page, 4, 1) +

SUBSTRING (au.first_page, 3, 1) + SUBSTRING (au.first_page, 2, 1) +

SUBSTRING (au.first_page, 1, 1))) AS first_page

FROM sys.partitions p

INNER JOIN sys.indexes i

ON p.object_id = i.object_id

AND p.index_id = i.index_id

INNER JOIN sys.objects o

ON p.object_id = o.object_id

INNER JOIN sys.system_internals_allocation_units au

ON p.partition_id = au.container_id

INNER JOIN sys.partition_schemes ps

ON ps.data_space_id = i.data_space_id

INNER JOIN sys.partition_functions f

ON f.function_id = ps.function_id

INNER JOIN sys.destination_data_spaces dds

ON dds.partition_scheme_id = ps.data_space_id

AND dds.destination_id = p.partition_number

INNER JOIN sys.filegroups fg

ON dds.data_space_id = fg.data_space_id

LEFT OUTER JOIN sys.partition_range_values rv

ON f.function_id = rv.function_id

AND p.partition_number = rv.boundary_id

WHERE i.index_id < 2

AND o.object_id = OBJECT_ID(‘dbo.SomeTableName’);

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About the Author

Lori is an avid runner, cross fitter and SQL enthusiast. She has been working for SQLRX for 15 years and has been working with SQL in general for 25 years. Yup...she is an old hand at this stuff.

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