Hi Christophe,

Regarding:  What I find to be weird is that just ONE index seems to
yield the same results as several fields indexed:

Perhaps you're using this already, but prefixing your SELECT with
"EXPLAIN QUERY PLAN"  will quickly identify exactly which, if any
indicies are used.   It's a much briefer output than using just the
"EXPLAIN" prefix.

Also, Sqlite uses at most *one* index per table per SELECT, I believe.

 


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