CreateQuery t_logical_expressions_optimizer_low_cardinality (children 3)
 Identifier t_logical_expressions_optimizer_low_cardinality
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration a (children 1)
    DataType LowCardinality (children 1)
     ExpressionList (children 1)
      DataType String
   ColumnDeclaration b (children 1)
    DataType UInt32
 Storage definition (children 1)
  Function Memory
