Skip to main content

Logical Views to specify an outer join between two attribute lookup tables when only attributes are on a report


Logical Views to specify an outer join between two attribute lookup tables when only attributes are on a report


Apart from using the VLDB properties to create the left outer join,  article describes how to use the Logical View to specify an outer join between two attribute lookup tables when only attributes are on a report. This method exists as attribute only outer joins will not be generated on their own by the MicroStrategy SQL engine. This is because they are only necessary with ragged/unbalanced hierarchies which are not supported as null attribute IDs are not supported (parent elements with no child elements or child elements with no parents). 

Brief instructions are provided using the example below.

Consider, two attributes: Parent01 and Child01 have a parent-child relationship. Their Lookup tables are defined, as follows
Parent01Child01



Note that although there are 4 ID values for the attribute Parent01, there is no defined relationship for the Parent01 element p4 (ID=4) in the Lookup table for attribute Child01. Placing both attributes on a report will result in the following SQL and data returned. Parent01's element p4 will not be returned. This is known as a ragged hierarchy and is not supported in MicroStrategy.
 
SQLData Returned
select a12.parent01_ID parent01_ID,
a13.parent01_DESC parent01_DESC,
a12.child01_ID child01_ID,
a12.child01_ID child01_ID0
from child01 a12
join parent01 a13
on (a12.parent01_ID = a13.parent01_ID)


To overcome this issue,  create a Logical View with the following SQL. Note the Left Outer Join.
 
SQLLogical View Definition
select a12.parent01_ID parent01_ID,
a12.parent01_DESC parent01_DESC,
a11.child01_ID child01_ID,
a11.child01_DESC child01_DESC
from parent01 a12
left outer join child01 a11
on (a11.parent01_ID = a12.parent01_ID)


Modify the attribute Child01 to include the new Logical View as a source table and redefine a relationship to attribute Parent01 using the new Logical View.
 
Add Source TableAdd Relationship


Executing the same report will now return all elements for Attribute Parent01.
 
SQLData Returned
select /* RRR01 */ a12.parent01_ID parent01_ID,
a12.child01_ID child01_ID
from (select a12.parent01_ID parent01_ID,
a12.parent01_DESC parent01_DESC,
a11.child01_ID child01_ID,
a11.child01_DESC child01_DESC
from parent01 a12
left outer join child01 a11
on (a11.parent01_ID = a12.parent01_ID)) a12


Labels:

Comments

Post a Comment

Popular posts from this blog

HyperIntelligence Training Videos

HyperIntelligence  Training Videos           Design and build hyper cards Optimizing Datasets for HyperIntelligence Using the HyperIntelligence for Office Outlook Add-In Building HyperIntelligence Cards Using HyperIntelligence for Mobile on Android Deploying HyperIntelligence for Outlook Insights On-The-Go: HyperIntelligence for Mobile Building HyperIntelligence Profile Cards Designing Custom HyperIntelligence Cards Using the Calendar with HyperIntelligence for Mobile
4 comments
Read more

Microstrategy Dossiers explained

Microstrategy  Dossiers With the release of MicroStrategy 10.9, we’ve taken a leap forward in our dashboarding capabilities by simplifying the user experience, adding storytelling, and collaboration.MSTR has  evolved dashboards to the point that they are more than dashboards - they are  interactive, collaborative analytic stories . Ultimately, it was time to go beyond dashboards, both in concept and in name, and so  the've  renamed VI dashboards to  ‘ dossiers ’.  Dossiers can be created by using the new Desktop product or Workstation or simply from the Web interface which replaces Visual Insights. All the existing visual Insights dashboards will be converted to Dossiers   With MicroStrategy 10.9, there was an active focus on making it easier to build dashboards for the widest audience of end users. To achieve this, some key new capabilities were added that make it easier to author, read, interact and collaborate on dashboards ...
7 comments
Read more

Administration standards to optimize network data transfer speeds

Optimization standards to help developers work with the System Administrator to optimize network data transfer speeds: Place all server components in the same segment to minimize latency between the Intelligence Server, Web server, data warehouse server, and metadata server Expand bandwidth and minimize latency between servers and clients to ensure that bottlenecks do not occur when data is requested over your network Use HTTP compression between the Web servers and Web clients to achieve maximum throughput between these components Configure a Web proxy server to handle caching and reduce the load on the Web server
1 comment
Read more

Customers Who Live in the Same City as Call Centers

Customers Who Live in the Same City as Call Centers Your new utility company has call centers located throughout the country, and your recent surveys indicate that customers who live in the same city as a call center are particularly satisfied with service due to extremely rapid repairs during power outages. To begin your new advertising campaign, you want to generate a list of Call Centers that coincide with Customer Cities. The following steps create an attribute-to-attribute qualification filter that generates the list of desired cities. To Create an Attribute-To-Attribute Qualification that Compares the Call Center and Customer City Attributes In MicroStrategy Web, log in to a project. Open any folder page (for example, click Shared Folders on the home page). Click the  Create Filter  icon  . From the Object browser on the left, select the  Customer City  attribute from the Customers hierarchy and drag it to the filter pane on the right. Change  Qualify...
1 comment
Read more

MicroStrategy URL API Parameters

MicroStrategy URL Structure The following table summarizes the root URL structure used for every request to MicroStrategy Web. Environment Main Application URL Administration URL J2EE http://webserver/MicroStrategy/servlet/mstrWeb http://webserver/MicroStrategy/servlet/mstrWebAdmin .NET http://webserver/MicroStrategy/asp/Main.aspx http://webserver/MicroStrategy/asp/Admin.aspx Every request sent to MicroStrategy Web calls a central controller. Parameters are appended to  Main.aspx  or  mstrWeb  (in a .NET and J2EE environment, respectively) to indicate to the controller how the request should be internally forwarded and handled. The following examples show a URL for accessing a MicroStrategy folder when the user does not have an existing session. The URL contains not only the parameters needed to connect to MicroStrategy Web, but also the parameters needed to log on and create a session. J2EE environment: <a href="http:...
2 comments
Read more

mstrio – Python and R wrappers for the MicroStrategy

mstrio – Python and R wrappers for the MicroStrategy REST APIs Connecting to MicroStrategy  Create a connection to the Intelligence Server using   Connection()   and    connect()  in Python and R, respectively. Required arguments for the   Connection()  function are the URL for the MicroStrategy REST API server, MicroStrategy Intelligence Server username and password, as well as the MicroStrategy project name. By default, the   connect()  function anticipates your MicroStrategy Intelligence Server username and password. LDAP authentication is also supported. Use the optional argument    login_mode=16    in the    connect()  function for LDAP authentication.  Extract data from cubes and reports  To extract data from MicroStrategy cubes and reports, use the   get_cube()  and   get_report()  functions. Use...
8 comments
Read more

Prompt-in-prompt(Nested Prompts) in Microstrategy

Prompt-in-prompt(Nested Prompts) in  Microstrategy Nested prompts allows you to create one prompt based on the other and other bases on another, nested prompts allows us to prompt the highest level(Like year) to middle level(like Quarter, then to the low level(like Month). Here you can see how to  create a 3-level deep nested prompt that will prompt the user to select a year, then a quarter within that year, then a month within that quarter. Prompt-in-prompt is a feature in which the answer to one prompt is used to define another prompt. This feature is only implemented for element list prompts . The following procedure describes how to achieve this: Create the highest level filter. This is a filter which contains a prompt on an attribute element list. Create a filter on the attribute "Year." Click "prompt on attribute element list" and click "Next" through the rest of the screens to accept the default values. Do not set any additio...
3 comments
Read more

Fact tables levels tables in Microstrategy explained

Fact tables levels in Microstrategy: Fact tables are used to store fact data. Fact tables should contain attribute Id's and fact values which are measurable. All the descriptive information about the fact tables should stored in Dimension tables either in Star Schema fashion or Snow Flake Schema fashion which is best suited to your reporting solution. Since attributes provide context for fact values, both fact columns and attribute ID columns are included in fact tables. Facts help to link indirectly related attributes using these attribute ID columns. The attribute ID columns included in a fact table represent the level at which the facts in that table are stored. So the level of a fact table in the Fact_Item_Day_Customer can be the attribute Id's which is at Day, Item & Customer Id level. For example, fact tables containing sales and inventory data look like the tables shown in the following diagram: Base fact columns ver...
2 comments
Read more

Microstrategy "Error type: Odbc error. Odbc operation attempted

 "Error type: Odbc error. Odbc operation attempted: SQLExecDirect. [HYT00:0: on SQLHANDLE] [MicroStrategy][ODBC Oracle Wire Protocol driver]Timeout expired" is shown when executing reports from Web When users are trying to execute some reports in MicroStrategy web in particular, they may receive the Error “SQL Generation Complete Index out of range” and “Timeout expired” error as shown below: Possible Causes: One possible cause is that the MicroStrategy Intelligence Server using a cached database connection that was already dropped by the RDBMS. To resolve this: Admin should delete the database connection caches and create a new DSNs in case they are sharing DSNs to connect to different databases. In addition, change the settings for the ‘Connection lifetime’ and the ‘Connection idle time out’.  Follow the steps below to perform the mentioned changes and verify the report after each step and some of the settings require i-server r...
4 comments
Read more