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Paul has 18 years experience with Microsoft SQL Server. He has worked in the roles of production DBA, database developer, database architect, applications developer, business intelligence and data warehouse developer, and instructor for students aspiring for MCDBA certification. He has performed numerous data migrations and supported large databases (3 Terabyte, 1+ billion rows) with high transactions. He is a member of PASS, blogs about lessons learned from a developer’s approach to SQL Server administration, and has been the president of the Boulder SQL Server Users’ Group from January 2009 to present.

Monday, January 9, 2017

vwIndexDetail

This is an updated version of what was previously vwIndexRaw.

Creates a view that shows all indexes for all objects in all databases on this SQL instance.  System databases and objects are excluded by default, but you can optionally include them by setting @ShowSysObjects = 1.  This is helpful in ferreting out exactly what covering indexes exist for a given query, or for identifying duplicate indexes. 


IF Object_ID('dbo.CreateVwIndexDetail') Is Not Null
       DROP PROC dbo.CreateVwIndexDetail
GO

CREATE PROC dbo.CreateVwIndexDetail
      @ShowSql bit = 0,
      @ShowSysObjects bit = 0
AS
/*     DATE        AUTHOR            REMARKS
       1/3/17      PPaiva            Intial creation.


       DESCRIPTION
              Creates a view in the current database to see
                           all indexes for all objects in all databases
                           on this server.
              System objects are excluded by default;
                           use @ShowSysObjects = 1 to show them.
              Coded to use Convert(varchar, ServerProperty('ServerName'))
                           rather than @@ServerName since the latter can be erroneous.

       USAGE
              Exec CreateVwIndexDetail 1
              Exec CreateVwIndexDetail 1, 1

       DEBUG
              SELECT *
              FROM vwIndexDetail
              ORDER BY Instance, DB, SchemaName, ObjName, IndexName, Ord

              SELECT *
              FROM vwIndexDetail
              WHERE Include = 1
              ORDER BY DB, ObjName, IndexName, Ord

              SELECT *
              FROM sys.databases

*/
SET NOCOUNT ON

DECLARE @s varchar(max),
            @DB varchar(100),
            @MaxDB varchar(100),
            @i int,
            @sNow varchar(16)

SET @sNow = Convert(varchar(16), GetDate(), 120)


SET @s = 'IF Object_ID(''dbo.vwIndexDetail'') Is Not Null
      DROP VIEW dbo.vwIndexDetail'

IF @ShowSql = 1
      Print @s

Exec(@s)
    
Print ''

SET @s = 'CREATE VIEW vwIndexDetail
AS
/*    DATE        AUTHOR            REMARKS
      ' + Convert(varchar(10), GetDate(), 01) + '     PPaiva            Initial creation.

      DESCRIPTION
            Provides a list of all indexes in all databases
                  on this instance.
            This view is auto-generated on a daily basis via
                  Admin.dbo.CreateVwIndex.
            If a new database is added this view won''t show it unless
                  you run the refresh code below.
            If a database is deleted this view will malfunction unless
                  you run the refresh code below.
                
      To REFRESH VIEW when new databases are added:
            Exec Admin.dbo.CreateVwIndex
          

      -- Sample of view     
      SELECT TOP 100 *
      FROM Admin.dbo.vwIndexDetail
      ORDER BY Instance, dB, SchemaName, ObjName, IndexName, Ord


*/
'

-- Will refer to these system databases more than once,
-- so load into table for easy reference.
CREATE TABLE #SysDB(
      Name varchar(30) NOT NULL
      )
INSERT INTO #SysDB VALUES ('master')
INSERT INTO #SysDB VALUES ('tempdb')
INSERT INTO #SysDB VALUES ('model')
INSERT INTO #SysDB VALUES ('msdb')
INSERT INTO #SysDB VALUES ('Admin')
INSERT INTO #SysDB VALUES ('distribution')


SELECT name
INTO #DBs
FROM sys.databases
WHERE state_desc = 'online'

IF @ShowSysObjects = 0
      DELETE #DBs
      FROM #DBs d
      JOIN #SysDB s
            ON s.Name = d.name

SELECT  @MaxDB = Max(Name),
            @DB = '',
            @i = 0
FROM #DBs


DECLARE @IsSystemDB char(1)

WHILE @DB < @MaxDB
      BEGIN
            SET @i = @i + 1

            SELECT @DB = Min(Name)
            FROM #DBs
            WHERE Name > @DB
          
            IF @DB In (SELECT Name FROM #SysDB)
                  SET @IsSystemDB = '1'
            ELSE
                  SET @IsSystemDB = '0'


            SET @s = @s + '
SELECT  '

            SET @s = @s + 'Convert(varchar, ServerProperty(''ServerName'')) as Instance,
            ''' + @DB + ''' as DB,
            s.name COLLATE SQL_Latin1_General_CP1_CI_AS SchemaName,
            o.name COLLATE SQL_Latin1_General_CP1_CI_AS ObjName,
            i.is_primary_key PK,
            i.is_unique Uniq,
            i.name COLLATE SQL_Latin1_General_CP1_CI_AS IndexName,
            ic.key_ordinal Ord,
            c.name COLLATE SQL_Latin1_General_CP1_CI_AS ColName,
            CASE WHEN ic.is_descending_key = 0
                        THEN ''asc''
                        ELSE ''desc''
                  END Sort,
            i.type_desc Type,
            ic.is_included_column Include,
            i.is_unique_constraint UniqCons,
            i.fill_factor FF,
            ic.column_id ColID,
            i.object_id,
            c.column_id,
            o.create_date ObjCreateDate,
            o.modify_date ObjModifyDate,
            ' + @IsSystemDB + ' IsSystemDB,
            ''' + @sNow + ''' ViewCreateDate
FROM [' + @DB + '].sys.indexes i
JOIN [' + @DB + '].sys.index_columns ic
      ON  ic.object_id = i.object_id
      AND ic.index_id = i.index_id
JOIN [' + @DB + '].sys.columns c
      ON  c.object_id = ic.object_id
      AND c.column_id = ic.column_id
JOIN [' + @DB + '].sys.objects o
      ON o.object_id = i.object_id
JOIN [' + @DB + '].sys.schemas s
      ON s.schema_id = o.schema_id
'

IF @ShowSysObjects = 0
      SET @s = @s + 'WHERE o.type <> ''s''
  AND s.name <> ''sys''
'

                                  
            IF @DB <> @MaxDB
                  SET @s = @s + '    UNION ALL '
                

      END



IF @ShowSql = 1
      BEGIN
            Print @s
      END

Exec (@s)
go


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