CreateQuery array_pk (children 3)
 Identifier array_pk
 Columns definition (children 1)
  ExpressionList (children 4)
   ColumnDeclaration key (children 1)
    DataType Array (children 1)
     ExpressionList (children 1)
      DataType UInt8
   ColumnDeclaration s (children 1)
    DataType String
   ColumnDeclaration n (children 1)
    DataType UInt64
   ColumnDeclaration d (children 2)
    DataType Date
    Literal \'2000-01-01\'
 Storage definition (children 1)
  Function MergeTree (children 1)
   ExpressionList (children 3)
    Identifier d
    Function tuple (children 1)
     ExpressionList (children 3)
      Identifier key
      Identifier s
      Identifier n
    Literal UInt64_1