SUMX ( CurrentDetail, [@CurrentValue] ) 这种写法,相较于上一种书写量多一些,通过定义虚拟表来减少迭代遍历的次数。从理论上来说,因为定义了虚拟表,无论源代码需要对事实表迭代多少次,这个思路迭代的永远都是虚拟表,优化度很高。 我们来对比一下: DAX Studio测试: 三种写法的差距很明显。其实这里有一些争议的...
Both functions remove duplicates and return a list of the possible values in the specified column. However, the VALUES function can also return a blank value. This blank value is useful in cases where you are looking up distinct values from a related table, but a value used in the ...
语法如下: RANK.EQ(value, list, [order], [value_if_not_found]) 其中,value是你要查找的值,list是你要在其中查找的数据集,order是可选参数,用来指定排序方式(1表示升序,-1表示降序,默认为升序),value_if_not_found是可选参数,用来指定如果找不到value时返回的值。 RANKX:这个函数更加强大,它可以在表中...
MIN('Model_Order'[发货日期])},[Value])// 根据实际修改VAREndDate=MAXX({MAX('Model_Order'[订单日期]),MAX('Model_Order'[发货日期])},[Value])// 根据实际修改// 生成日期表,以下内容无需修改RETURNADDCOLUMNS(CALENDAR(DATE(YEAR(BeginDate),1,1...
You can most easily think of filter context as: One or more filters applied in a calculation that determines a result or value. Filter context doesn’t exist in place of row context; rather, it applies in addition to row context. For example, to further narrow down the values to include...
A value for each row in the table is calculated by taking values from the Calendar Year column (in the same Date table), adding a space and the capital letter Q, and then adding the values from the Calendar Quarter column (in the same Date table). The result for each row in the cal...
string roleTableDax = "SELECTCOLUMNS ( { " + listRoleNames + " }, \"" + roleColumnName + "\", [Value] )"; var roleTable = Model.Tables.FindByName(roleTableName); if (roleTable == null) { roleTable = Model.AddCalculatedTable(roleTableName,roleTableDax); } else { (roleTable as...
通过提供List来减少迭代遍历的次数。 那么有没有继续可以优化的空间?有的。 优化写法: SalesAmountByDisplay3 = VAR CurrentDetail = ADDCOLUMNS ( DISTINCT ( 'Dim_DisplayDepartment' ), "@CurrentValue", VAR CurrentDepartmentKey = 'Dim_DisplayDepartment'[DepartmentKey] ...
value zurückgeben Bemerkungen Beispiel 1 Beispiel 2 Gilt für: Berechnete Spalte berechnete Tabelle Measure visuelle Berechnung Gibt die Rangfolge einer Zahl in einer Liste von Zahlen zurück. Syntax DAX RANK.EQ(<value>, <columnName>[, <order>]) ...
calculations. For example, you can create formulas that sum values for a related table and then save that value in a single cell. Or, to control the rows from the related table, you can apply filters to tables and columns. For more information, seeRelationships between tabl...