On Fri, Sep 13, 2019 at 6:38 PM Jens Alfke <[email protected]> wrote:
> (b) Execute "SELECT key, … FROM table WHERE key IN (…)", including all of
> the key strings.
>
> If I do (b), SQLite has less setup work to do, and it could potentially
> optimize the b-tree lookup. On the downside, I have to prepare a statement
> every time since the RHS of an "IN" isn't substitutable.
I solved the substitutability with the JSON1 extension, which does require
JSON-encoding your values but is presumably easier to set up than carray:
...WHERE key IN (SELECT value FROM json_each(?)))
Works great.
Wout.
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