CreateQuery t_summing_lc (children 3)
 Identifier t_summing_lc
 Columns definition (children 1)
  ExpressionList (children 3)
   ColumnDeclaration key (children 1)
    DataType UInt32
   ColumnDeclaration val (children 1)
    DataType LowCardinality (children 1)
     ExpressionList (children 1)
      DataType UInt32
   ColumnDeclaration date (children 1)
    DataType DateTime
 Storage definition (children 3)
  Function SummingMergeTree (children 1)
   ExpressionList (children 1)
    Identifier val
  Identifier date
  Identifier key