Cannot run sqlite3 in terminal

When I type in sqlite3 into terminal (regardless of whether I include parameters or not), I am not able to run the command and instead get the following error.

  dyld: Library not 开发者_开发百科loaded: /opt/local/lib/libreadline.6.1.dylib
  Referenced from: /opt/local/bin/sqlite3
  Reason: image not found
  Trace/BPT trap: 5

Advice for resolving this issue will be much appreciated!

Thank you!

---

After you upgrade your system to Lion, you'd better to run

sudo port selfupdate

this command will update port self and rebuild it's base system if needed.