MSSQL Split String with delimiter

I want to split a string into two tables.

I have a table named event01_eventsummary. In this table a sample entry is: "Mr. Smith | Meeting with Mrs.Smith". 

Now I want the string before the delimiter (|) in the table event01_eventorganizer.

I know in MySQL I could use the MySQL SUBSTRING_INDEX() function. 

Anyone know how I could get this done?