A common error.
Almost as common as the erroneous belief that many responders to this post seem to have. I've said it before and I'll say it again.
In nearly ever case, INNER JOIN performs better than FOR ALL ENTRIES.
The only exceptions are when one or more of the tables is buffered, or with very specific forms of data. In these cases, you must test to find out which is most efficient, as there are no hard and fast rules.
I don't know where this myth about INNER JOIN arose, but I'm pleased that now, at last, in the ABAP for HANA courses it is being debunked by SAP.