Hi all, I’m reading DTTG 3.0’s documentation, and learning its search syntax. In Appendix, Search Operators, Syntax Description (p.59 in pdf version), there’s a BNF description for search syntax, formatted as follows:
<query> := [<colspec> :] <phrase>
<query> := [<colspec> :] <neargroup>
<query> := ( <query> )
<query> := <query> AND <query>
<query> := <query> OR <query>
<query> := <query> NOT <query>
<phrase> := string [*]
<phrase> := <phrase> + <phrase>
<colspec> := colname
<colspec> := { colname1 colname2 ... }
<neargroup> := NEAR ( <phrase> <phrase> ... [, N] )
Specifically, I’m not sure about the <colspec> := { colname1 colname2 ... } line. I do understand that we can scope a search phrase by field name, e.g., name:test, as defined by <colspec> := colname. But the next line seems suggesting that you can combine multiple fields as a single search scope prefix, like name comment:text. But this obviously doesn’t work.
So what does this line mean? How is it supposed to be used? Can you give an example?
