https://community.fabric.microsoft.com/t5/DAX-Commands-and-Tips/Dax-Question-what-does-the-dot-mean-in-this-case/m-p/2892735#M93936 <P>So apparently the .[Date] changes the format of the column you are selecting</P> Tue, 08 Nov 2022 15:23:42 GMT Anonymous 2022-11-08T15:23:42Z https://community.fabric.microsoft.com/t5/DAX-Commands-and-Tips/Dax-Question-what-does-the-dot-mean-in-this-case/m-p/2892240#M93917 <P>Hello everyone,&nbsp;</P><P>&nbsp;</P><P>Can anyone elaborate what does the . (dot) mean in this case :</P><P>&nbsp;</P><DIV><DIV><SPAN>VAR</SPAN> <SPAN>FirstD</SPAN><SPAN> = </SPAN><SPAN>LOOKUPVALUE</SPAN><SPAN>(</SPAN><SPAN>DATETABLE[DayN_Sequential]</SPAN><SPAN>,</SPAN><SPAN>DATETABLE[Date]</SPAN><SPAN>.</SPAN><SPAN>[Date]</SPAN><SPAN>,</SPAN><SPAN>DATE</SPAN><SPAN>(</SPAN><SPAN>2022</SPAN><SPAN>,</SPAN><SPAN>7</SPAN><SPAN>,</SPAN><SPAN>1</SPAN><SPAN>))</SPAN></DIV><DIV>&nbsp;</DIV><DIV><SPAN>And can anyone tell me why I get an error saying Parameter is not the correct type?</SPAN></DIV><DIV>&nbsp;</DIV><DIV>I think its because the column of that table is not a hierarchy?&nbsp;</DIV><DIV>Is there a way to convert the column to hierarchy? and how does hierarchy differ than the normal column ?</DIV></DIV> Tue, 08 Nov 2022 12:54:22 GMT https://community.fabric.microsoft.com/t5/DAX-Commands-and-Tips/Dax-Question-what-does-the-dot-mean-in-this-case/m-p/2892240#M93917 Anonymous 2022-11-08T12:54:22Z https://community.fabric.microsoft.com/t5/DAX-Commands-and-Tips/Dax-Question-what-does-the-dot-mean-in-this-case/m-p/2892735#M93936 <P>So apparently the .[Date] changes the format of the column you are selecting</P> Tue, 08 Nov 2022 15:23:42 GMT https://community.fabric.microsoft.com/t5/DAX-Commands-and-Tips/Dax-Question-what-does-the-dot-mean-in-this-case/m-p/2892735#M93936 Anonymous 2022-11-08T15:23:42Z