CreateQuery x1 (children 3)
 Identifier x1
 Columns definition (children 1)
  ExpressionList (children 1)
   ColumnDeclaration i (children 1)
    DataType Nullable (children 1)
     ExpressionList (children 1)
      DataType int
 Storage definition (children 3)
  Function ReplicatedMergeTree (children 1)
   ExpressionList (children 2)
    Literal \'/clickhouse/tables/{database}/x1\'
    Literal \'r1\'
  StorageOrderByElement (children 1)
   Identifier i
  Set
