DECLARE @segments table (id int identity(1,1),Segment varchar(max));
DECLARE @x xml;
DECLARE @stringtoReplaceGOs VARCHAR(MAX);
DECLARE @OutputScript VARCHAR(MAX);

SET @stringtoReplaceGos =
------------------------------------------------------------------------------------------
-- Paste your SQL script inside the string below, remember to replace ' with '' beforehand
------------------------------------------------------------------------------------------
'GO

SELECT	top 10	REPLACE(REPLACE(mid.statement,''['',''''),'']'','''') as dbtable_name,
			CONVERT(BIGINT,ROUND(migs.avg_total_user_cost * (migs.avg_user_impact / 100.0) * (migs.user_seeks + migs.user_scans),0)) AS improvement_measure, 
			object_name(mid.[object_id], mid.database_id) as table_name,
			''IDX_'' + LEFT (PARSENAME(mid.statement, 1), 32) + ''_'' + LEFT(REPLACE(REPLACE(ISNULL(mid.equality_columns + CASE WHEN mid.inequality_columns IS NOT NULL THEN '','' ELSE '''' END,'''') + ISNULL (mid.inequality_columns, ''''),''['',''''),'']'',''''),CASE CHARINDEX('','',REPLACE(REPLACE(ISNULL(mid.equality_columns + CASE WHEN mid.inequality_columns IS NOT NULL THEN '','' ELSE '''' END,'''') + ISNULL (mid.inequality_columns, ''''),''['',''''),'']'','''')) WHEN 0 THEN LEN(REPLACE(REPLACE(ISNULL(mid.equality_columns + CASE WHEN mid.inequality_columns IS NOT NULL THEN '','' ELSE '''' END,'''') + ISNULL (mid.inequality_columns, ''''),''['',''''),'']'','''')) ELSE CHARINDEX('','',REPLACE(REPLACE(ISNULL(mid.equality_columns + CASE WHEN mid.inequality_columns IS NOT NULL THEN '','' ELSE '''' END,'''') + ISNULL (mid.inequality_columns, ''''),''['',''''),'']'',''''))-1 END) + ''_NDX'' + CONVERT(VARCHAR(50),ROW_NUMBER() OVER (PARTITION BY mid.statement ORDER BY migs.avg_total_user_cost * migs.avg_user_impact * (migs.user_seeks + migs.user_scans) DESC)) AS INDEX_NAME,
			''NONCLUSTERED'' AS INDEX_TYPE,
			REPLACE(REPLACE(ISNULL(mid.equality_columns + CASE WHEN mid.inequality_columns IS NOT NULL THEN '','' ELSE '''' END,'''') + ISNULL (mid.inequality_columns, ''''),''['',''''),'']'','''') as index_columns,
			REPLACE(REPLACE(mid.included_columns,''['',''''),'']'','''') as included_columns,
			migs.user_seeks, 
			migs.user_scans,
			0 as User_lookups,
			'''' as User_updates,

		   ''CREATE INDEX [IDX_'' + LEFT (PARSENAME(mid.statement, 1), 32) + ''_'' + LEFT(REPLACE(REPLACE(ISNULL(mid.equality_columns + CASE WHEN mid.inequality_columns IS NOT NULL THEN '','' ELSE '''' END,'''') + ISNULL (mid.inequality_columns, ''''),''['',''''),'']'',''''),CASE CHARINDEX('','',REPLACE(REPLACE(ISNULL(mid.equality_columns + CASE WHEN mid.inequality_columns IS NOT NULL THEN '','' ELSE '''' END,'''') + ISNULL (mid.inequality_columns, ''''),''['',''''),'']'','''')) WHEN 0 THEN LEN(REPLACE(REPLACE(ISNULL(mid.equality_columns + CASE WHEN mid.inequality_columns IS NOT NULL THEN '','' ELSE '''' END,'''') + ISNULL (mid.inequality_columns, ''''),''['',''''),'']'','''')) ELSE CHARINDEX('','',REPLACE(REPLACE(ISNULL(mid.equality_columns + CASE WHEN mid.inequality_columns IS NOT NULL THEN '','' ELSE '''' END,'''') + ISNULL (mid.inequality_columns, ''''),''['',''''),'']'',''''))-1 END) + ''_NDX'' + CONVERT(VARCHAR(50),ROW_NUMBER() OVER (PARTITION BY mid.statement ORDER BY migs.avg_total_user_cost * migs.avg_user_impact * (migs.user_seeks + migs.user_scans) DESC)) + '']''
			  + '' ON '' + mid.statement 
			  + '' ('' + ISNULL (mid.equality_columns,'''') 
			  + CASE WHEN mid.equality_columns IS NOT NULL AND mid.inequality_columns IS NOT NULL THEN '','' ELSE '''' END 
			  + ISNULL (mid.inequality_columns, '''')
			  + '')'' + ISNULL ('' INCLUDE ('' + mid.included_columns + '')'', '''') AS create_index_statement,

			migs.*, db_name(mid.database_id), object_name(mid.[object_id], mid.database_id)


FROM sys.dm_db_missing_index_groups mig
INNER JOIN sys.dm_db_missing_index_group_stats migs 
	ON migs.group_handle = mig.index_group_handle
INNER JOIN sys.dm_db_missing_index_details mid 
	ON mig.index_handle = mid.index_handle
WHERE migs.avg_total_user_cost * (migs.avg_user_impact / 100.0) * (migs.user_seeks + migs.user_scans) > 10 --and database_id = 10
ORDER BY --mid.statement , 
migs.avg_total_user_cost * migs.avg_user_impact * (migs.user_seeks + migs.user_scans) DESC;
go
PRINT(''hi'');
go
PRINT(''more stuff!'');
GO
PRINT(''more stuff!'');
GO'
------------------------------------------------------------------------------------------
-- Your SQL Script should end here with a '
------------------------------------------------------------------------------------------


SELECT @X = CONVERT(XML,'<root><s>' + REPLACE(@stringtoReplaceGOs,'
','</s><s>') + '</s></root>')

INSERT INTO @segments(segment)
SELECT T.c.value('./text()[1]','varchar(max)') FROM @X.nodes('/root/s') T(c);

UPDATE seg
SET Segment = 'SELECT ' + CONVERT(VARCHAR(MAX),id) + ' as Line, GETDATE() as CurrentDateTime;'
FROM @segments as seg
WHERE Segment LIKE 'GO%';

SELECT @OutputScript=COALESCE(@OutputScript,'') + COALESCE(Segment,'') + '
'
FROM @segments
ORDER BY id;

SELECT @OutputScript;

EXEC (@OutputScript);