CreateQuery src_table (children 3)
 Identifier src_table
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration time (children 2)
    DataType DateTime (children 1)
     ExpressionList (children 1)
      Literal \'UTC\'
    Function fromUnixTimestamp (children 1)
     ExpressionList (children 1)
      Identifier sipTimestamp
   ColumnDeclaration sipTimestamp (children 1)
    DataType UInt64
 Storage definition (children 2)
  Function MergeTree
  Identifier time
