`gmail.message_headers`

fail

Header rows for one Gmail message.

Requires `id` from `gmail.messages`. This exposes each returned Gmail

id captured 2026-09-01 14:08:06Zmedian 6492 ms

Verdict: FALSE

All variants errored: 10 errors, 0 row returns.

What to do

Coral catalog/connector bug

coral.bug

Either the table isn't actually exposed, or the catalog guide is wrong about required filters / columns.

Open a coral issue. Include the exact error, the SQL, and one trial output.

Coral catalog/connector bug

coral.bug

Either the table isn't actually exposed, or the catalog guide is wrong about required filters / columns.

Not fixable here. Mark verdict=fail with the exact coral catalog quote as the note.

rendering…

Summary

Variant	Trials	Min	Median	Max	Row counts	Errors
id-filter-broken	2	6485 ms	6492 ms	6499 ms	[0, 0]	2
message-id-filter	2	6526 ms	6544 ms	6563 ms	[0, 0]	2
json-extract	2	6495 ms	6500 ms	6506 ms	[0, 0]	2
aggregate	2	6531 ms	6558 ms	6585 ms	[0, 0]	2
edge	2	6495 ms	6498 ms	6501 ms	[0, 0]	2

Latency per trial

id-filter-brokenmedian 6492ms

scale: 0–6499 ms

message-id-filtermedian 6544ms

scale: 0–6563 ms

json-extractmedian 6500ms

scale: 0–6506 ms

aggregatemedian 6558ms

scale: 0–6585 ms

edgemedian 6498ms

scale: 0–6501 ms

Probe variants — every command + output

id-filter-broken2 trials

min 6485ms · median 6492ms · max 6499ms · rows 0,0

expected coral_bug: required `id` filter but column doesn't exist

Command

SELECT message_id, name, value FROM gmail.message_headers WHERE id = 'fake' LIMIT 1

Trials + output

trial 1·6485ms·rows 0isError=true

Error

Error: No column named `id`
Detail: No column `id` is in scope. Valid columns include: gmail.message_headers.message_id, gmail.message_headers.name, gmail.message_headers.value, gmail.message_headers.raw.

trial 2·6499ms·rows 0isError=true

Error

Error: No column named `id`
Detail: No column `id` is in scope. Valid columns include: gmail.message_headers.message_id, gmail.message_headers.name, gmail.message_headers.value, gmail.message_headers.raw.

message-id-filter2 trials

min 6526ms · median 6544ms · max 6563ms · rows 0,0

expected coral_bug: connector demands `id` filter even though columns are message_id-keyed

Command

SELECT message_id, name, value FROM gmail.message_headers WHERE message_id = 'fake' LIMIT 1

Trials + output

trial 1·6526ms·rows 0isError=true

Error

Error: gmail.message_headers requires `WHERE id = <constant>`
Detail: gmail.message_headers requires a constant equality filter on id
Hint: Add a constant equality filter on `id` or inspect `coral.columns` / `coral.tables` first.

trial 2·6563ms·rows 0isError=true

Error

Error: gmail.message_headers requires `WHERE id = <constant>`
Detail: gmail.message_headers requires a constant equality filter on id
Hint: Add a constant equality filter on `id` or inspect `coral.columns` / `coral.tables` first.

json-extract2 trials

min 6495ms · median 6500ms · max 6506ms · rows 0,0

no-filter probe (will likely fail with required-filter error)

Command

SELECT message_id, name, value, json_as_text(raw, 'name') AS raw_name FROM gmail.message_headers LIMIT 5

Trials + output

trial 1·6506ms·rows 0isError=true

Error

Error: gmail.message_headers requires `WHERE id = <constant>`
Detail: gmail.message_headers requires a constant equality filter on id
Hint: Add a constant equality filter on `id` or inspect `coral.columns` / `coral.tables` first.

trial 2·6495ms·rows 0isError=true

Error

Error: gmail.message_headers requires `WHERE id = <constant>`
Detail: gmail.message_headers requires a constant equality filter on id
Hint: Add a constant equality filter on `id` or inspect `coral.columns` / `coral.tables` first.

aggregate2 trials

min 6531ms · median 6558ms · max 6585ms · rows 0,0

no-filter probe (likely rejected)

Command

SELECT COUNT(*) AS n FROM gmail.message_headers

Trials + output

trial 1·6585ms·rows 0isError=true

Error

Error: gmail.message_headers requires `WHERE id = <constant>`
Detail: gmail.message_headers requires a constant equality filter on id
Hint: Add a constant equality filter on `id` or inspect `coral.columns` / `coral.tables` first.

trial 2·6531ms·rows 0isError=true

Error

Error: gmail.message_headers requires `WHERE id = <constant>`
Detail: gmail.message_headers requires a constant equality filter on id
Hint: Add a constant equality filter on `id` or inspect `coral.columns` / `coral.tables` first.

edge2 trials

min 6495ms · median 6498ms · max 6501ms · rows 0,0

no-filter probe (likely rejected)

Command

SELECT message_id, name FROM gmail.message_headers LIMIT 200

Trials + output

trial 1·6495ms·rows 0isError=true

Error

Error: gmail.message_headers requires `WHERE id = <constant>`
Detail: gmail.message_headers requires a constant equality filter on id
Hint: Add a constant equality filter on `id` or inspect `coral.columns` / `coral.tables` first.

trial 2·6501ms·rows 0isError=true

Error

Error: gmail.message_headers requires `WHERE id = <constant>`
Detail: gmail.message_headers requires a constant equality filter on id
Hint: Add a constant equality filter on `id` or inspect `coral.columns` / `coral.tables` first.

All returned rowsacross all non-errored trials · filterable · paginated

0 rows stored · 0 returned · page 1/1

No rows captured. Trials either returned isError=true (errors shown above) or the probe runner didn't capture full output rows.

Trial comparison

Variant / combo	Trial #	Latency	Status	First key returned
id-filter-broken	t1	6485ms	error	—
id-filter-broken	t2	6499ms	error	—
message-id-filter	t1	6526ms	error	—
message-id-filter	t2	6563ms	error	—
json-extract	t1	6506ms	error	—
json-extract	t2	6495ms	error	—
aggregate	t1	6585ms	error	—
aggregate	t2	6531ms	error	—
edge	t1	6495ms	error	—
edge	t2	6501ms	error	—

Probed by bld-dabqr1nqj5pc73dgn3h0-676t6 at 2026-09-01T14:08:06Z

JSON record: reports/gmail/tables/message_headers.json

first_run_at: 2026-09-01T14:08:06Z

last_retried_at: 2026-09-01T14:08:06Z

retry_count: 1

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