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VDM.GETHISTORYEARLIEST

Retrieves the timestamp of the first time the specified history type was recorded for this visitor.

Syntax

<VDM.GETHISTORYEARLIEST
      ATTRIBUTE="attribute"
      VARNAME="varname"
      [STARTDATE="date1"]
      [ENDDATE="date2"]
      [LIST="constraints"] /> 

Parameters

ATTRIBUTE (required)

Input parameter. Name of a history type or name of an external history record (that is, a record of history data stored in the Transact database).

VARNAME (required)

Input and output parameter. As input, name of a variable to create on output to hold the timestamp.

STARTDATE (optional)

Input parameter. Start date, in milliseconds, from epoch.

ENDDATE (optional)

Input parameter. End date, in milliseconds, from epoch.

LIST (optional)

Input parameter. Name of a list of values to use to constrain the date. The list has two columns:

• field - Name of an individual history attribute.
• value - Corresponding value for the history attribute.

Use this argument if you want to consider only specific instances of this record. There might be more than one row for the same field.

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