title: DAX formula to concatenate three columns
body: <p>I am mew to DAX. How can I concatenate three different columns say First_Name, Middle_Name and Last_Name to a single column with a space in between using CONCATENATE function in DAX. 
  At present I could concatenate only two columns.</p>
  
  <p><strong>=CONCATENATE(FIRST_NAME],CONCATENATE(" ",[LAST_NAME]))</strong></p>
  
  <p>If any other function is there please do let me know that also. 
  My aim is to concatenate 1st Name, 2nd Name and 3rd Name into a single column in SSAS Tabular Model</p>
  
  <p>Please help me. Thanks in  Advance</p>