CreateQuery bloom_filter_nullable_index (children 3)
 Identifier bloom_filter_nullable_index
 Columns definition (children 2)
  ExpressionList (children 2)
   ColumnDeclaration order_key (children 1)
    DataType UInt64
   ColumnDeclaration str (children 1)
    DataType Nullable (children 1)
     ExpressionList (children 1)
      DataType String
  ExpressionList (children 1)
   Index (children 2)
    Identifier str
    Function bloom_filter (children 1)
     ExpressionList
 Storage definition (children 3)
  Function MergeTree (children 1)
   ExpressionList
  Identifier order_key
  Set
