Monitoring the progress of CreateIndex

One of the frustrating aspects of SQL Server is the lack of progress indicators. One such command falling into this pit is CreateIndex. However, this is a great link for a solution; http://sqlblog.com/blogs/michael_zilberstein/archive/2013/10/21/51415.aspx

Step 1 – Before you run the following query make sure you have ‘include actual execution plan’ option set in query analyser. If you don’t have this, or similar, then the DMV won’t produce any results.

Step 2 – Select @@SPID

Step 3 – run your Create Index in the same query window as step 2

Step 4 – Create a new query with the following SQL, replace the SPID in the first line with that from step (2)

DECLARE @SPID INT = 51;
;WITH agg AS
(
SELECT SUM(qp.[row_count]) AS [RowsProcessed],
SUM(qp.[estimate_row_count]) AS [TotalRows],
MAX(qp.last_active_time) – MIN(qp.first_active_time) AS [ElapsedMS],
MAX(IIF(qp.[close_time] = 0 AND qp.[first_row_time] > 0,
[physical_operator_name],
N'<Transition>’)) AS [CurrentStep]
FROM sys.dm_exec_query_profiles qp
WHERE qp.[physical_operator_name] IN (N’Table Scan’, N’Clustered Index Scan’, N’Sort’)
AND   qp.[session_id] = @SPID
), comp AS
(
SELECT *,
([TotalRows] – [RowsProcessed]) AS [RowsLeft],
([ElapsedMS] / 1000.0) AS [ElapsedSeconds]
FROM   agg
)
SELECT [CurrentStep],
[TotalRows],
[RowsProcessed],
[RowsLeft],
CONVERT(DECIMAL(5, 2),
(([RowsProcessed] * 1.0) / [TotalRows]) * 100) AS [PercentComplete],
[ElapsedSeconds],
(([ElapsedSeconds] / [RowsProcessed]) * [RowsLeft]) AS [EstimatedSecondsLeft],
DATEADD(SECOND,
(([ElapsedSeconds] / [RowsProcessed]) * [RowsLeft]),
GETDATE()) AS [EstimatedCompletionTime]
FROM   comp;
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