问题
I am getting unexpected results from a sphinxql query from a very large database and a very complex configuration file. I'm stumped trying to figure out what i'd be getting these results. Is there anyway to return the result and simultaneously find the actual indexed data it found? I'm trying to get some insight/clue into what part of this complex configuration file to look into as line by line is e near impossibility.
回答1:
As well as SHOW META, which itself shows much useful info...
SHOW PLAN - if want to diagnose the full-text query parsing itself
http://sphinxsearch.com/docs/current.html#sphinxql-show-plan
PACKEDFACTORS() - function can tell you more than you need to know about how ranking calculated
http://sphinxsearch.com/docs/current.html#expr-func-packedfactors
SHOW PROFILE - can help with performance issues
http://sphinxsearch.com/docs/current.html#sphinxql-show-profile
And DESCRIBE indexname is often useful to see exactly what Fields and Attributes in an index
http://sphinxsearch.com/docs/current.html#sphinxql-describe
Finally indextool --dumpheader can be very useful to check the configuration for a specific index.
http://sphinxsearch.com/docs/current.html#ref-indextool
(actually its other commands can be useful too!)
回答2:
You can fire SHOW META; just after the sphinxql query to get the insights.
http://sphinxsearch.com/docs/current.html#sphinxql-show-meta
来源：https://stackoverflow.com/questions/42570154/how-to-see-what-sphinx-is-actually-finding