CreateQuery lc_dict_reading (children 3)
 Identifier lc_dict_reading
 Columns definition (children 1)
  ExpressionList (children 3)
   ColumnDeclaration val (children 1)
    DataType UInt64
   ColumnDeclaration str (children 1)
    DataType LowCardinality (children 1)
     ExpressionList (children 1)
      DataType String
   ColumnDeclaration pat (children 1)
    DataType String
 Storage definition (children 3)
  Function MergeTree
  Identifier val
  Set
