use master
go
create procedure sp_reindex (@DbName varchar (50)) --хочу передавать в процедуру
as 
begin

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.

--set @=DB_ID(@DbName)
--declare @DbName nvarchar(50) --для отладки, когда запускать не процедурой, а текстом
--select @DbName='TestBase' -- тоже

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(@DbName), NULL, NULL , NULL, 'LIMITED')
WHERE avg_fragmentation_in_percent > 5.0 AND index_id > 0;
print @DbName
--print @Dbid
-- 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
            SELECT @command = N'ALTER INDEX ' + @indexname + N' ON ' + @schemaname + N'.' + @objectname + N' REORGANIZE';
        IF @frag >= 30.0
            SELECT @command = N'ALTER INDEX ' + @indexname + N' ON ' + @schemaname + N'.' + @objectname + N' REBUILD WITH (SORT_IN_TEMPDB = ON, MAXDOP=1)';
        IF @partitioncount > 1
            SELECT @command = @command + N' PARTITION=' + CAST(@partitionnum AS nvarchar(10));
	
		PRINT N'Executed: ' + @command; --эта штука печатает команду, пока запускаешь текстом, но после первого раза через процедуру перестает печатать и через текст

		--EXEC (@command); --пока заремлено, нужно хотя бы, чтобы печатала команду

    END;

-- Close and deallocate the cursor.
CLOSE partitions;
DEALLOCATE partitions;
drop table #work_to_do
END
GO