How can I drop all indexes in a SQL database with one command?

Question

So, how can I drop all indexes in a SQL database with one command? I have this command that will get me all the 20 or so drop statements, but how can I run all of those drop s

Answer 1

SELECT  'DROP INDEX [' + IX.NAME + '] ON ' + OBJECT_NAME(IX.OBJECT_ID) + '; '
FROM  SYS.INDEXES IX
  JOIN SYS.OBJECTS O ON  IX.OBJECT_ID = O.OBJECT_ID
  INNER JOIN SYS.SCHEMAS S ON O.SCHEMA_ID = S.SCHEMA_ID
WHERE 
  IX.NAME IS NOT NULL 
  AND O.TYPE <> 'S' 
  AND IS_PRIMARY_KEY <> 1 
  AND INDEX_ID > 0
  AND S.NAME != 'SYS' AND S.NAME!= 'SYS' AND IS_UNIQUE_CONSTRAINT = 0

Modify conditions according to your needs

If u want to delete PK constraints, you will get this message if you try to drop index:

An explicit DROP INDEX is not allowed on index... It is being used for PRIMARY KEY constraint enforcement.

Then, use this...

SELECT 'ALTER TABLE [' + O.NAME + '] DROP CONSTRAINT  ' + IX.NAME + '; '
FROM  SYS.INDEXES IX
  JOIN SYS.OBJECTS O ON  IX.OBJECT_ID = O.OBJECT_ID
  INNER JOIN SYS.SCHEMAS S ON O.SCHEMA_ID = S.SCHEMA_ID
WHERE 
  IX.NAME IS NOT NULL 
  AND O.TYPE <> 'S' 
  AND INDEX_ID > 0
  AND S.NAME != 'SYS' AND S.NAME!= 'SYS'