PostgreSQL Batch execution of SqlCommand

We do n’t have anyone to add a schedule.
How can i fix it. Help~!

MVC
Hangfire.AspNetCore (1.7.9)
Hangfire.PostgreSql (1.6.4.1)
```
services.AddHangfire(x =>
x.UsePostgreSqlStorage(conn));

app.UseHangfireDashboard("/hangfire", new DashboardOptions
{

Authorization = new[] { new DashboardNoAuthorizationFilter(), },
IgnoreAntiforgeryToken = true
});
```

Api Console
Hangfire.AspNetCore (1.7.9)
Hangfire.PostgreSql (1.6.4.1)
```
services.AddHangfire(x =>
x.UsePostgreSqlStorage(conn));

app.UseHangfireServer();
```

My sql data is empty.
https://imgur.com/cPiqZuM
https://imgur.com/gtcmaW0

Found that Hangfire two data tables execute SQL commands very frequently

hangfure.jobqueue => update
```
UPDATE ""hangfire"".""jobqueue""
SET ""fetchedat"" = NOW() AT TIME ZONE 'UTC'
WHERE ""id"" IN (
SELECT ""id""
FROM ""hangfire"".""jobqueue""
WHERE ""queue"" = ANY ($1)
AND ""fetchedat"" IS NULL
ORDER BY
CASE ""queue""
WHEN 'default' THEN 0
ELSE 1
END,
""fetchedat"", ""jobid""
LIMIT 1
)
```

hangfure.lock=> insert, delete
```
execute : DELETE FROM "hangfire"."lock" WHERE "resource" = $1 AND "acquired" < $2
parameters: $1 = 'HangFire:recurring-jobs:lock', $2 = '2020-05-07 01:50:13.220603'

execute : DELETE FROM "hangfire"."lock" WHERE "resource" = $1
parameters: $1 = 'HangFire:recurring-jobs:lock'
```

SqlCommand File
Delete
https://drive.google.com/file/d/1H8w0kPCbmXCegcYtzjnzTaFbJQQer0jt/view?usp=sharing

Insert
https://drive.google.com/file/d/1SQQAo_Z9BGhkQivcnJDGBMQPsHTfFAsR/view?usp=sharing

Update
https://drive.google.com/file/d/1aNJiTnutpB0UXrTZM37l126FZlpldbOg/view?usp=sharing

Start with the reported Hangfire.AspNetCore 1.7.9 and Hangfire.PostgreSql 1.6.4.1 configuration, including AddHangfire and UseHangfireServer. Review the linked SqlCommand examples and the PostgreSQL jobqueue and lock statements to determine whether they explain the missing scheduled jobs. Done should include a reproducible cause and a documented resolution.

Written by the indexing model from the issue text.