research Question

rebuild index for selected table using existing index rebuild script

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marrowyung asked on
Microsoft SQL Server
25 Comments3 Solutions50 ViewsLast Modified:

hi,


We are using SQL server 2016 STANARD and we have index always defrag a lot daily, like 88% everyday, and we are using index rebuild script like:


  
-- Ensure a USE  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 < 20.0              SET @command = N'SET QUOTED_IDENTIFIER ON; ALTER INDEX ' + @indexname + N' ON ' + @schemaname + N'.' + @objectname + N' REORGANIZE';          IF @frag >= 20.0              SET @command = N'SET QUOTED_IDENTIFIER ON; 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 


how to make this script check the table name and if it sees that tables name , build the index of that table completely?



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ste5an
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