CreateQuery table_without_pk (children 3)
 Identifier table_without_pk
 Columns definition (children 1)
  ExpressionList (children 4)
   ColumnDeclaration key1 (children 1)
    DataType UInt8
   ColumnDeclaration key2 (children 1)
    DataType UInt32
   ColumnDeclaration key3 (children 1)
    DataType DateTime64 (children 1)
     ExpressionList (children 2)
      Literal UInt64_6
      Literal \'UTC\'
   ColumnDeclaration value (children 1)
    DataType String
 Storage definition (children 3)
  Function MergeTree
  Function tuple (children 1)
   ExpressionList
  Set
