roachtest: sqlsmith: to_json(): unexpected type *tree.DEnum for AsJSON

[cockroach-teamcity]

(roachtest).sqlsmith/setup=seed/setting=no-mutations failed on master@6b9c32bf8d8553be6b0540f82ce18327b88262b5:

The test failed on branch=master, cloud=gce:
test artifacts and logs in: /home/agent/work/.go/src/github.com/cockroachdb/cockroach/artifacts/sqlsmith/setup=seed/setting=no-mutations/run_1
	sqlsmith.go:169,sqlsmith.go:199,test_runner.go:753: error: pq: internal error: to_json(): unexpected type *tree.DEnum for AsJSON
		stmt:
		SELECT
			to_json(tab_5518._enum)::JSONB AS col_13872,
			tab_5516._int8 AS col_13873,
			tab_5516._date AS col_13874,
			tab_5517._uuid AS col_13875,
			tab_5517._interval AS col_13876,
			NULL AS col_13877,
			5782046592603117708:::INT8 AS col_13878,
			NULL AS col_13879,
			NULL AS col_13880
		FROM
			defaultdb.public.seed@seed__int8__float8__date_idx AS tab_5516,
			defaultdb.public.seed@seed__int8__float8__date_idx AS tab_5517
			JOIN defaultdb.public.seed@seed__int8__float8__date_idx AS tab_5518 ON
					(tab_5517._bool) = (tab_5518._bool) AND (tab_5517._decimal) = (tab_5518._decimal)
			JOIN defaultdb.public.seed AS tab_5519
				JOIN defaultdb.public.seed AS tab_5520 ON
						(tab_5519._int8) = (tab_5520._int8)
						AND (tab_5519._float8) = (tab_5520._float8)
						AND (tab_5519._date) = (tab_5520._date) ON (tab_5517._date) = (tab_5520._date)
		LIMIT
			20:::INT8;

More

Artifacts: /sqlsmith/setup=seed/setting=no-mutations
Related:

• roachtest: sqlsmith decoding unset EncDatum #49251 roachtest: sqlsmith/setup=seed/setting=no-mutations failed C-test-failure O-roachtest O-robot branch-release-20.1 release-blocker

See this test on roachdash
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