release-20.1: sql: fix panic when SHOW RANGES is called with a virtual table #48347
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Backport 1/1 commits from #47500.
/cc @cockroachdb/release
Prior to this commit, calling
SHOW RANGES
orSHOW RANGE FOR ROW
witha virtual table caused a panic, since virtual tables have no ranges.
This commit fixes the problem by returning an error instead of a panic.
Fixes #44326
Release note (bug fix): Fixed a panic that could occur when SHOW RANGES
or SHOW RANGE FOR ROW was called with a virtual table.