Simon Slavin wrote:
> I think that the documentation doesn't sufficiently explain the problem.
> Or maybe the use of IN or lists deserves its own page rather than being
> buried in the extremely long page on expressions.

<https://www.sqlite.org/rowvalue.html> says:
| For a row-value IN operator, the left-hand side … can be either
| a parenthesized list of values or a subquery with multiple columns. But
| the right-hand side … must be a subquery expression.

I'd guess this restriction makes parsing easier.


Regards,
Clemens
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