This will rebuild all the indexes in your DB.

rebuild-all-indexes.sql

-- From https://gallery.technet.microsoft.com/scriptcenter/Script-for-rebuilding-all-8d079754
DECLARE @TableName varchar(255);
DECLARE TableCursor CURSOR FOR

SELECT table_name
FROM information_schema.tables
WHERE table_type = 'base table'


OPEN TableCursor
	FETCH NEXT FROM TableCursor INTO @TableName

	WHILE @@FETCH_STATUS = 0
	BEGIN
		DBCC DBREINDEX(@TableName,' ',90)

		FETCH NEXT FROM TableCursor INTO @TableName
	END
CLOSE TableCursor

DEALLOCATE TableCursor