CreateQuery t (children 3)
 Identifier t
 Columns definition (children 1)
  ExpressionList (children 1)
   ColumnDeclaration a (children 1)
    DataType Array (children 1)
     ExpressionList (children 1)
      DataType Tuple (children 1)
       ExpressionList (children 3)
        NameTypePair x (children 1)
         DataType Nullable (children 1)
          ExpressionList (children 1)
           DataType Int64
        NameTypePair y (children 1)
         DataType Map (children 1)
          ExpressionList (children 2)
           DataType Int64
           DataType Nullable (children 1)
            ExpressionList (children 1)
             DataType String
        NameTypePair z (children 1)
         DataType LowCardinality (children 1)
          ExpressionList (children 1)
           DataType Nullable (children 1)
            ExpressionList (children 1)
             DataType FixedString (children 1)
              ExpressionList (children 1)
               Literal UInt64_16
 Storage definition (children 1)
  Function Memory
