Hello everyone,  i m trying to create a new column (using case when and contains/like) depending on the context of another string column, but i find it troublesome when it comes to containing numbers such as 50 and 500 for example: 
   
 HAVE DATASET 
 CPP 
 blabla DP50_L 
 blablablu DP 50 L 
 ble DP50 
 blx DP50_500  
 blibli DP500_L 
 bliblibla DP 500 L 
 bliblible DP500 
 blublu DP500 50 
   
 WANT DATASET 
 CPP                               SPEED 
 blabla DP50_L                50 
 blablablu DP 50 L           50 
 ble DP50                        50 
 blx DP50_500                50 
 blibli DP500_L                500 
 bliblibla DP 500 L           500 
 bliblible DP500               500 
 blublu DP500 50             500 
   
 As a result, i have faulty classification. What is the proper way to create the column of the example above? 
 Thanks alot for your time and insights! 
						
					
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