CreateQuery arraytest (children 3)
 Identifier arraytest
 Columns definition (children 1)
  ExpressionList (children 3)
   ColumnDeclaration created_date (children 2)
    DataType Date
    Function toDate (children 1)
     ExpressionList (children 1)
      Identifier created_at
   ColumnDeclaration created_at (children 2)
    DataType DateTime
    Function now (children 1)
     ExpressionList
   ColumnDeclaration strings (children 2)
    DataType Array (children 1)
     ExpressionList (children 1)
      DataType String
    Function emptyArrayString (children 1)
     ExpressionList
 Storage definition (children 1)
  Function MergeTree (children 1)
   ExpressionList (children 4)
    Identifier created_date
    Function cityHash64 (children 1)
     ExpressionList (children 1)
      Identifier created_at
    Function tuple (children 1)
     ExpressionList (children 2)
      Identifier created_date
      Function cityHash64 (children 1)
       ExpressionList (children 1)
        Identifier created_at
    Literal UInt64_8192
