AlterQuery  mutations_and_escaping_1648 (children 2)
 ExpressionList (children 1)
  AlterCommand UPDATE (children 2)
   Function and (children 1)
    ExpressionList (children 2)
     Function equals (children 1)
      ExpressionList (children 2)
       Identifier d
       Literal \'2018-01-02\'
     Function equals (children 1)
      ExpressionList (children 2)
       Function sleepEachRow (children 1)
        ExpressionList (children 1)
         Literal UInt64_1
       Literal UInt64_0
   ExpressionList (children 1)
    Assignment e (children 1)
     Function CAST (children 1)
      ExpressionList (children 2)
       Literal \'foo\'
       Literal \'Enum8(\\\'foo\\\' = 1, \\\'bar\\\' = 2)\'
 Identifier mutations_and_escaping_1648