https://community.fabric.microsoft.com/t5/Power-Query/operator/m-p/3149751#M100975 <P>thanks you sir</P> Thu, 23 Mar 2023 11:58:15 GMT CCCP 2023-03-23T11:58:15Z https://community.fabric.microsoft.com/t5/Power-Query/operator/m-p/3149651#M100969 <P>Hi , looking at the operation made by power bi when importing a folder with csv files i have found this step</P><P>where this formula is written</P><P>= Table.SelectRows(Source, each [Attributes]?[Hidden]? &lt;&gt; true)</P><P>&nbsp;</P><P>what is this ? ,where i can find the meaning of this sintax?</P><P>&nbsp;</P><P>thanks</P> Thu, 23 Mar 2023 11:28:17 GMT https://community.fabric.microsoft.com/t5/Power-Query/operator/m-p/3149651#M100969 CCCP 2023-03-23T11:28:17Z https://community.fabric.microsoft.com/t5/Power-Query/operator/m-p/3149690#M100972 <P>Hi,&nbsp;<a href="javascript:void(0)" data-lia-user-mentions="" data-lia-user-uid="435409" data-lia-user-login="CCCP" class="lia-mention lia-mention-user">CCCP</a>&nbsp;&nbsp;</P><P>it's M operator&nbsp;<EM><A href="https://learn.microsoft.com/en-us/powerquery-m/m-spec-operators" target="_self">optional-field-selector</A>:</EM><SPAN>&nbsp;&nbsp;</SPAN>[ <EM>field-name</EM> ] ?</P><P>Nice nick BTW! CCCP forever!&nbsp;</P> Thu, 23 Mar 2023 11:38:45 GMT https://community.fabric.microsoft.com/t5/Power-Query/operator/m-p/3149690#M100972 AlienSx 2023-03-23T11:38:45Z https://community.fabric.microsoft.com/t5/Power-Query/operator/m-p/3149751#M100975 <P>thanks you sir</P> Thu, 23 Mar 2023 11:58:15 GMT https://community.fabric.microsoft.com/t5/Power-Query/operator/m-p/3149751#M100975 CCCP 2023-03-23T11:58:15Z