Follow-up Dax Drop Duplicates
问题 Similiar to a question asked here, Given, this table, I want to only keep the records where the email appears first. email firstname Lastname Address City Zip ABC@XYZ.com Scott Johnson A Z 1111 ABC@XYZ.com Bill Johnson B Y 2222 ABC@XYZ.com Ted Smith C X 3333 DEF@QRP.com Steve Williams D W 4444 XYZ@LMN.com Sam Samford E U 5555 XYZ@LMN.com David Beals F V 6666 DEF@QRP.com Stephen Jackson G T 7777 TUV@DEF.com Seven Alberts H S 8888 <table border="1" class="dataframe"> <thead> <tr style="text