Query to find the fragmentation status of all indexes on a single database. Line 11 you need to insert your db name.

SELECT ps.database_id, ps.OBJECT_ID,
 ps.index_id, b.name,
 ps.avg_fragmentation_in_percent
 FROM sys.dm_db_index_physical_stats (DB_ID(), NULL, NULL, NULL, NULL) AS ps
 INNER JOIN sys.indexes AS b ON ps.OBJECT_ID = b.OBJECT_ID
 AND ps.index_id = b.index_id
 WHERE ps.database_id = DB_ID()
 ORDER BY ps.OBJECT_ID
 GO
 SELECT *
 FROM sys.dm_db_index_physical_stats(DB_ID('DatabaseName'), NULL, NULL, NULL , NULL);
 -- Ensure a USE <databasename> statement has been executed first.
 SET NOCOUNT ON;
 DECLARE @objectid int;
 DECLARE @indexid int;
 DECLARE @partitioncount bigint;
 DECLARE @schemaname nvarchar(130);
 DECLARE @objectname nvarchar(130);
 DECLARE @indexname nvarchar(130);
 DECLARE @partitionnum bigint;
 DECLARE @partitions bigint;
 DECLARE @frag float;
 DECLARE @command nvarchar(4000);
 -- Conditionally select tables and indexes from the sys.dm_db_index_physical_stats function
 -- and convert object and index IDs to names.
 SELECT
 object_id AS objectid,
 index_id AS indexid,
 partition_number AS partitionnum,
 avg_fragmentation_in_percent AS frag
 INTO #work_to_do
 FROM sys.dm_db_index_physical_stats (DB_ID(), NULL, NULL , NULL, 'LIMITED')
 WHERE avg_fragmentation_in_percent > 10.0 AND index_id > 0;
 -- Declare the cursor for the list of partitions to be processed.
 DECLARE partitions CURSOR FOR SELECT * FROM #work_to_do;
 -- Open the cursor.
 OPEN partitions;
 -- Loop through the partitions.
 WHILE (1=1)
 BEGIN;
 FETCH NEXT
 FROM partitions
 INTO @objectid, @indexid, @partitionnum, @frag;
 IF @@FETCH_STATUS < 0 BREAK;
 SELECT @objectname = QUOTENAME(o.name), @schemaname = QUOTENAME(s.name)
 FROM sys.objects AS o
 JOIN sys.schemas as s ON s.schema_id = o.schema_id
 WHERE o.object_id = @objectid;
 SELECT @indexname = QUOTENAME(name)
 FROM sys.indexes
 WHERE object_id = @objectid AND index_id = @indexid;
 SELECT @partitioncount = count (*)
 FROM sys.partitions
 WHERE object_id = @objectid AND index_id = @indexid;
 -- 30 is an arbitrary decision point at which to switch between reorganizing and rebuilding.
 IF @frag < 30.0
 SET @command = N'ALTER INDEX ' + @indexname + N' ON ' + @schemaname + N'.' + @objectname + N' REORGANIZE';
 IF @frag >= 30.0
 SET @command = N'ALTER INDEX ' + @indexname + N' ON ' + @schemaname + N'.' + @objectname + N' REBUILD';
 IF @partitioncount > 1
 SET @command = @command + N' PARTITION=' + CAST(@partitionnum AS nvarchar(10));
 EXEC (@command);
 PRINT N'Executed: ' + @command;
 END;
 -- Close and deallocate the cursor.
 CLOSE partitions;
 DEALLOCATE partitions;
 -- Drop the temporary table.
 DROP TABLE #work_to_do;
 GO

Read more at msdn.microsoft.com.

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