CreateQuery collate_test2 (children 3)
 Identifier collate_test2
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration x (children 1)
    DataType UInt32
   ColumnDeclaration s (children 1)
    DataType Tuple (children 1)
     ExpressionList (children 2)
      DataType UInt32
      DataType LowCardinality (children 1)
       ExpressionList (children 1)
        DataType Nullable (children 1)
         ExpressionList (children 1)
          DataType String
 Storage definition (children 1)
  Function Memory (children 1)
   ExpressionList