XQuery/Overview of eXist search functions and operators

From Wikibooks, open books for an open world
Jump to navigation Jump to search

Overview of eXist search functions and operators

In catching up with updating from eXist-1.2.6 to eXist-1.4.x, one thing struck me. Despite eXist's elaborate documentation, I was feeling a bit lost in the myriad of overlapping search functions and their modalities (both default and fallback behaviours). I think I would feel helped with an overview grouping the different search-related functions in one place.

I don't know if this could be interesting to complete the eXist documentation; at this stage, however I'm not too sure about all functions, and maybe others may see more interesting approaches for such an overview. Therefore, I thought maybe the Wikibook could be an interesting place for such information.

The table below provides an overview, with following colour codes:
I'm not 100% sure -- all clarifications welcome!
not in eXist function documentation

overview of eXist search functions and operators
query type index use
function / operator wildcards regex brute force fallback range legacy FT lucene FT ngram
fn:matches() x x x
fn:contains(), fn:starts-with(), fn:ends-with() x x
=, <, <=, >, >= x x
text:match-any(), text:match-all() x x
text:fuzzy-match-all(), text:fuzzy-match-any() x
text:matches-regex() x x x
near(), &=, |= x x
ft:query() x x x
ngram:contains(), ngram:starts-with(), ngram:ends-with() x