Thread moved to Database Development forum - which is where SQL questions belong

There are several causes of this error, as what is considered to be a "parameter" (in the context of the error message) is very wide-ranging.


The first thing I would check, which is basically an extension to Hack's question, is does it work if you remove the Where clause (or at least part involving dates)?

If not, the next thing to check is that all of the table and field names are correct.