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Lionel's wife, Lillian, became a board member of Luthor Corp during Lex's tenure as CEO, and practically acted as one of his accomplices. At some point after his death, the company was passed on to his son, Lex Luthor. Outside of SQLBI, most of Alberto's personal time is spent practicing video games, in the vain hope of eventually beating his son.Luthor Corp was founded by Lionel Luthor in Metropolis. Thus, you can easily meet Alberto by looking up local Power BI user groups during scheduled courses.
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When traveling for work, he likes to engage with local user groups to provide evening sessions about his favorite topics. He loves to be on stage both at large events and at smaller user groups meetings, exchanging ideas with other SQL and BI fans. Alberto offers consulting services on large and complex data warehouses to provide assessments and validation of project analysis or to perform specific problem-solving activities.Īlberto is a well-known speaker at many international conferences, like PASS Summit, Sqlbits, and Microsoft Ignite. Today, Alberto's main activities are in the delivery of DAX and data modeling workshops for Power BI and Analysis Services all around the world. He is a Microsoft MVP and he earned the SSAS Maestro title, the highest level of certification on Microsoft Analysis Services technology. He and Marco Russo created, where they publish extensive content about Business Intelligence.Īlberto published several books about Analysis Services, Power BI, and Power Pivot. USERELATIONSHIP can only activate an existing relationship.Īlberto started working with SQL Server in 2000 and immediately his interest focused on Business Intelligence. You cannot use USERELATIONSHIP to create a relationship on the fly. The relationship must already be in the model. With that said, it is just a standard convention the opposite order does not alter the result. The order of the columns is not relevant, even though it is common practice to use the column of the many-side of the relationship ( Sales in our example) first, and the one-side ( Date in the example) second. The arguments of USERELATIONSHIPS are the two columns that form the relationship. You can compare Delivery Amount with Sales Amount in the following figure. The Delivery Amount measure below computes the amount delivered within a certain time period, in contrast with the ordered amount returned by the Sales Amount measure: When CALCULATE has computed its result, the default relationship becomes active again. USERELATIONSHIP is a CALCULATE modifier, which instructs CALCULATE to temporarily activate the relationship. In order to filter Sales based on Delivery Date, you can temporarily activate a relationship using USERELATIONSHIP. Delivery Date is not used as part of the default filtering. Consequently, if you filter by Year the report shows the sales whose Order Date belongs to the filtered year. Inactive relationships are – by nature – non-active. If you create a second relationship, based on the Delivery Date columns, the second relationship is an inactive relationship. For example, you start with a model where Sales is related to Date through the Date column, like in the following picture. Indeed, you can only have one active relationship between any two tables. If two tables are linked by more than one relationship, you can decide which relationship to activate by using USERELATIONSHIP.