Add Estimate When Long Running SQL Processes Will Finish script

Fix and test udf_PatternSplitLoop

Author: ktaranov

Scripts/Estimate_When_Long_Running_SQL_Processes_Will_Finish.sql

@@ -0,0 +1,27 @@
+/*
+Author: Tim Ford
+Original link: http://sqlmag.com/database-administration/estimate-when-long-running-sql-processes-will-finish
+*/
+
+
+SET NOCOUNT ON;
+
+SELECT R.session_id
+     , R.percent_complete
+     , R.total_elapsed_time/1000 AS elapsed_seconds
+     , R.wait_type
+     , R.wait_time
+     , R.last_wait_type,
+     , DATEADD(s,100/((R.percent_complete)/ (R.total_elapsed_time/1000)), R.start_time) AS est_complete_time
+     , ST.text AS batch_text
+     , CAST(SUBSTRING(ST.text, R.statement_start_offset / 2,
+             (
+               CASE WHEN R.statement_end_offset = -1 THEN DATALENGTH(ST.text)
+               ELSE R.statement_end_offset
+               END - R.statement_start_offset 
+             ) / 2 
+     ) AS varchar(1024)) AS statement_executing
+FROM sys.dm_exec_requests AS R
+        CROSS APPLY sys.dm_exec_sql_text(R.sql_handle) AS ST
+WHERE R.percent_complete > 0
+  AND R.session_id <> @@spid;

User_Defined_Function/udf_PatternSplitLoop.sql

@@ -8,15 +8,15 @@ CREATE FUNCTION [dbo].[udf_PatternSplitLoop]
   ) RETURNS 
   @Results TABLE ( ItemNumber  INT
                   ,Item        VARCHAR(400)
-                  ,[Matched]   INT     )
+                  ,[Matched]   INT)
    WITH SCHEMABINDING 
 AS 
 BEGIN;
 
--- DECLARE a couple of variables we'll need in our loop     
+-- DECLARE a couple of variables we'll need in our loop
 DECLARE 
   @ItemNumber  INT = 0 
-, @Remaining   VARCHAR(400) = ISNULL(@String, '')         
+, @Remaining   VARCHAR(400) = ISNULL(@String, '')
 -- Create the "not pattern" 
 , @NotPattern  VARCHAR(500) = REPLACE(REPLACE(@Pattern, '[', '[^'), '^^', '')
 , @Matched     INT
@@ -27,14 +27,15 @@ IF @String IS NULL OR @Pattern IS NULL
 WHILE DATALENGTH(@Remaining) > 0     
  BEGIN
    SELECT @ItemNumber = @ItemNumber + 1
-   -- The item returned from the cascaded CROSS APPLY b below               ,@String = CASE
-            -- When a+b = 1, then either a=1 and b=0 (the pattern was found but not pattern                     
-            -- was not found) or a=0 and b=1 (the not pattern was found but pattern was           
+   -- The item returned from the cascaded CROSS APPLY b below
+          ,@String = CASE
+            -- When a+b = 1, then either a=1 and b=0 (the pattern was found but not pattern
+            -- was not found) or a=0 and b=1 (the not pattern was found but pattern was
             -- not found).
-            -- This means that no meaninful patterns are found in what remains so we’re done.   
-               WHEN a+b = 1 THEN @Remaining   
-            -- This case returns the chunk up to the start of the next pattern/not pattern  
-               WHEN (a=1 AND b>0) OR (b=1 AND a>0)                                  THEN SUBSTRING(@Remaining, 1, CASE a 
+            -- This means that no meaninful patterns are found in what remains so we’re done.
+               WHEN a+b = 1 THEN @Remaining
+            -- This case returns the chunk up to the start of the next pattern/not pattern
+               WHEN (a=1 AND b>0) OR (b=1 AND a>0)                                  THEN SUBSTRING(@Remaining, 1, CASE a
                                   WHEN 1 THEN b 
                                   ELSE a 
                                  END - 1)
@@ -49,10 +50,10 @@ WHILE DATALENGTH(@Remaining) > 0
        -- Now that we have our ItemNumber and Item (in @String) INSERT them into our results
        INSERT INTO @Results SELECT @ItemNumber, @String, @Matched
 
-        -- Find the remaining characters in the string         
+        -- Find the remaining characters in the string
         SELECT @Remaining = CASE
                          WHEN DATALENGTH(@Remaining) = DATALENGTH(@String) THEN ''
-                         ELSE SUBSTRING(@Remaining, DATALENGTH(@String)+1, DATALENGTH(@Remaining)) 
+                         ELSE SUBSTRING(@Remaining, DATALENGTH(@String)+1, DATALENGTH(@Remaining))
          END
  END