1. 2012. Joins cause incorrect values with aggregated measures. https://community.tableau.com/s/question/0D54T00000C5aT5SAJ/joins-cause-incorrect-values-with-aggregated-measures-can-i-specify-aggregation-before-i-calculate-a-sum. 2012. Joins cause incorrect values with aggregated measures. https://community.tableau.com/s/question/0D54T00000C5aT5SAJ/joins-cause-incorrect-values-with-aggregated-measures-can-i-specify-aggregation-before-i-calculate-a-sum.
2. 2014. Aggregate after join without duplicates. https://stackoverflow.com/questions/26799813/aggregate-after-join-without-duplicates. 2014. Aggregate after join without duplicates. https://stackoverflow.com/questions/26799813/aggregate-after-join-without-duplicates.
3. 2017. Merge two tables while summing values from subtable. https://community.powerbi.com/t5/Desktop/Merge-two-tables-while-summing-values-from-subtable/m-p/201112. 2017. Merge two tables while summing values from subtable. https://community.powerbi.com/t5/Desktop/Merge-two-tables-while-summing-values-from-subtable/m-p/201112.
4. 2020. Blend Your Data. https://help.tableau.com/current/pro/desktop/en-us/multiple_connections.htm. 2020. Blend Your Data. https://help.tableau.com/current/pro/desktop/en-us/multiple_connections.htm.
5. 2020. Looker data modeling. https://www.looker.com/platform/data-modeling/. 2020. Looker data modeling. https://www.looker.com/platform/data-modeling/.