SharePoint filters the Web parts of a list item according to the meta attribute of the list item according to the conditions

SharePoint filters the Web parts of a list item according to the meta attribute of the list item according to the conditions
SharePoint filters the list items according to the meta attribute of the list items. Project Web parts effect: Add Web parts to the List page.

Delete and select the Country column as the Germany screening City as Berlin
Edit the Web parts and select the columns to be filtered: Click here to download them. Later I learned that it was originally written by Chinese people. Refer to the following blog: http://www.cnblogs.com/jianyi0115/archive/2011/12/09/2282287.html
Http://www.cnblogs.com/jianyi0115/archive/2008/02/15/1070158.html
Http://www.cnblogs.com/dreamnan/archive/2010/06/21/ListQueryWebPart.html