chapter13.amp

%%[
    /* Declare variables */
    var @dateColumn, @startDate, @endDate, @dateDiff
    var @dataExtensionName, @attributeToSearch, @valueToSearch

    /* Set the name of the data extension to be used */
    set @dataExtensionName = "My_DataExtension"

    /* Set the attribute to search by in the data extension */
    set @attributeToSearch = {{attributeToSearch}} /* Placeholder for the search attribute */

    /* Set the value to search for in the given attribute */
    set @valueToSearch = {{valueToSearch}} /* Placeholder for the search value */

    /* Specify the date column to retrieve from the data extension */
    set @dateColumn = {{datecolumn}} /* Placeholder for the column containing the date */

    /* Fetch the start date from the data extension */
    set @startDate = LookUp(@dataExtensionName, @dateColumn, @attributeToSearch, @valueToSearch)

    /* Add one day to the start date */
    set @endDate = DateAdd(@startDate, 1, 'D')

    /* Calculate the difference in hours between the start date and end date */
    set @dateDiff = DateDiff(@startDate, @endDate, 'H')

    /* Output the calculated date difference */
    OutputLine(concat("Date Difference in Hours: ", v(@dateDiff)))
]%%