Removing All Nonclustered Indexes in Database in SQL Server

Hello to everyone,

In this article, I will try to give information about removing all Nonclustered Indexes in the database in SQL Server.

In SQL Server, in some cases, you may want to remove all Nonclustered Indexes in the database.

You can easily do this using the code below.

DECLARE @SchemaName VARCHAR(256),
        @TableName VARCHAR(256),
        @IndexName VARCHAR(256),
        @TSQLDropIndex VARCHAR(MAX),
        @IsDroppedSuccessfully bit
 
IF OBJECT_ID('tempdb..#tableDrop') IS NOT NULL DROP TABLE #tableDrop
CREATE table #tableDrop 
(
  TableName VARCHAR(256),
  IndexName VARCHAR(256),
  dropScriptText VARCHAR(MAX),
  IsDroppedSuccessfully bit
)
 
 
DECLARE CursorIndexes CURSOR FOR
     SELECT schema_name(t.schema_id), t.name,  i.name
     FROM sys.indexes i
     INNER JOIN sys.tables t 
     ON t.object_id= i.object_id
     WHERE i.type>0 
     AND t.is_ms_shipped=0 
     AND t.name<>'sysdiagrams'  --
     AND (
           is_primary_key=0   -- To discard clustered indexes
           AND is_unique_constraint=0 -- To discard indexes with unique key constraints 
         )
 
OPEN CursorIndexes
FETCH NEXT FROM CursorIndexes INTO @SchemaName,@TableName,@IndexName
 
WHILE @@fetch_status = 0
BEGIN
      BEGIN TRY     
         SET @TSQLDropIndex = 'DROP INDEX '+QUOTENAME(@SchemaName)+ '.' + QUOTENAME(@TableName) + '.' +QUOTENAME(@IndexName)
         SET @IsDroppedSuccessfully=0
         BEGIN TRY
             PRINT @TSQLDropIndex
             EXEC(@TSQLDropIndex)
 
             SET @IsDroppedSuccessfully=1
         END TRY
         BEGIN CATCH
            SET @IsDroppedSuccessfully=0
         END CATCH
 
         INSERT INTO #tableDrop values(QUOTENAME(@SchemaName)+ '.[' +@TableName+']',@IndexName,@TSQLDropIndex,@IsDroppedSuccessfully)
      END TRY
      BEGIN CATCH 
      END CATCH
 
     FETCH NEXT FROM CursorIndexes INTO @SchemaName,@TableName,@IndexName
END
 
CLOSE CursorIndexes
DEALLOCATE CursorIndexes 
 
SELECT * FROM #tableDrop

Good luck to everyone in business and life.

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Yavuz Selim Kart

I try to explain what I know in software and database. I am still improving myself by doing research on many programming languages. Apart from these, I am also interested in Graphic Design and Wordpress. I also have knowledge about SEO and Social media management. In short, I am a determined person who likes to work hard.

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