Macros (3 of n++): Prompts

Macros allow you to alter SQL/MDX before it’s send to the datasource. Using the macro functions timestampmask, you can easily select specific members, or query certain tables.

Prompt macros give you an extremely fine grain of control. You can, for instance, allow a user to which measure he wants to see in his graph, or create dynamic default values.

To begin with, the structure of the prompt macro:


parameterName is self explanatory. Note that it is case sensitive. If you want to pass a value to that parameter via the URL or POST you need to preface it with a p_ so Par_Year becomes p_Par_Year.

The dataType will reject anything not covered by the datatype. The string ‘Hello World!’ would be rejected if the datatype was set to integer. The datatype also determines the type of prompt generated. ‘Integer’, for example, will always create a text box prompt even if the source field (see below) is filled.

The defaultValue will be returned if no parameter is selected. This does not need to obey the dataType. For example, you could have a filter set up: [Year] = #prompt(‘parYear’,’integer’,’year(getDate())’)# If 2010 was selected the filter would be [Year] = 2010, if no value was returned to the prompt the filter would be [Year] = year(getDate()).

The leadingText is text that is automatically entered before the selected parameter. For example a filter: #prompt(‘parYear’,’integer’,’1=1′,'[Year] = ‘)# In that example if 2010 was selected [Year] = 2010 would be returned to the filter. If nothing was selected, the filter would be 1=1.

The source will a list or tree prompt based on a referenced field. #prompt(‘timeMember’,’memberuniquename’,”,”,'[NS].[TimeDimension].[TimeHierarchy]’)# will create a tree prompt that will allow the user to select any member from the TimeHierarchy. #prompt(‘timeMember’,’memberuniquename’,”,”,'[NS].[TimeDimension].[TimeHierarchy].[MonthLevel]’)# will create a list prompt that will allow the user to select a single member from the MonthLevel. You can also include functions in the source: #prompt(‘timeMember’,’memberuniquename’,”,”,’filter([NS].[TimeDimension].[TimeHierarchy].[MonthLevel],[Measures].[Sales]>1000)’)# will create a list prompt of all months that had more than 1000 sales.

The trailingText, much like the leadingText, placing text after any values selected. #promptmany(‘Years’,’memberuniquename’,’children([NS].[TimeDimension].[TimeHierarchy]->[All Member])’,’set(‘,'[NS].[TimeDimension].[TimeHierarchy].[YearLevel]’,’)’)# will either return the children of the All member (if no values are selected), or will return a set of members that the user selected.


3 Responses to Macros (3 of n++): Prompts

  1. Gary says:

    Congrats! Very neat and useful blog. If you meant for it to become a thorough Cognos KB, than you may want to copy-paste or add a reference to other articles / tricks / solutions other post all over, unless it is your intention to make it home brew only.
    If you’ll need, I can send you those references from time to time as I find them, should you be interested.

    Another idea, is to create a dictionary for all those annoying error messages that RS generates. I have personally started to gather them, so … let me know if you’ll be interested in those.

    Cheers, and ttul8r (talk to you later).

  2. Mohinder says:

    Hi Paul,

    I have a similar request. I have a Dimensional Reprot which is scheduled to run on monthly basis and it fetches Rolling 13 Months data. I need to scheule the report on quarterly basis to get Previous Quarter data. Currently for fetching Rolling 13 months by deafault, I use the following Slicer in my Query

    #promptmany(‘pMonth’, ‘memberuniquename’, ‘[Rolling 13 Months]’, ‘set(‘, ”, ‘)’)# Here Rolling 13 Months is the Member Set. Now I want to Pass Prior QTD as a deafult value. I need to Dynamically change the Default value. This report is generated out of cube package. Can you please help me

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