Consider the following dataframe
+----+-----+-----+---------+
| A | B | C | id |
+----+-----+-----+---------+
| A | B | C | 1;2;3;4 |
+----+-----+-----+---------+
I need to split ids separated by semicolon in separate rows as follows
+----+-----+-----+---------+
| A | B | C |id |
+----+-----+-----+---------+
| A | B | C | 1 |
| A | B | C | 2 |
| A | B | C | 3 |
| A | B | C | 4 |
+----+-----+-----+---------+
What is the simpliest way to do that?
