CreateQuery nr (children 3)
 Identifier nr
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration x (children 1)
    DataType Nullable (children 1)
     ExpressionList (children 1)
      DataType UInt32
   ColumnDeclaration lc (children 1)
    DataType Nullable (children 1)
     ExpressionList (children 1)
      DataType String
 Storage definition (children 2)
  Function MergeTree
  Function tuple (children 1)
   ExpressionList
