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SQL script to check special characters in Index Name

select i . [name] as index_name ,     substring ( column_names , 1 , len ( column_names )- 1 ) as [columns] ,     case when i . [type] = 1 then 'Clustered index'         when i . [type] = 2 then 'Nonclustered unique index'         when i . [type] = 3 then 'XML index'         when i . [type] = 4 then 'Spatial index'         when i . [type] = 5 then 'Clustered columnstore index'         when i . [type] = 6 then 'Nonclustered columnstore index'         when i . [type] = 7 then 'Nonclustered hash index'         end as index_type ,     case when i . is_unique = 1 then 'Unique'         else 'Not unique' end as ...