anchor.diff:      ;
   
   indexNonClusterClause
  -    : NONCLUSTERED (hashWithBucket | (columnNameWithSortsWithParen alterTableIndexOnClause?)) 
  +    : NONCLUSTERED (hashWithBucket | columnNameWithSortsWithParen alterTableIndexOnClause?) 
       ;
   
   alterTableIndexOnClause
  
positive.code:     ;
  
  tableIndex
      : INDEX indexName
      ((CLUSTERED | NONCLUSTERED)? columnNames
      | CLUSTERED COLUMNSTORE
      | NONCLUSTERED? (COLUMNSTORE columnNames | hashWithBucket) 
      | CLUSTERED COLUMNSTORE (WITH LP_ COMPRESSION_DELAY EQ_ (NUMBER_ MINUTES?) RP_)?)
      (WHERE expr)?
      (WITH LP_ indexOption (COMMA_ indexOption)* RP_)? indexOnClause?
      (FILESTREAM_ON (ignoredIdentifier_ | schemaName | STRING_))?
      ;
  
  createIndexSpecification_
  