Grant Read-only permission to user on jobs

SELECT DISTINCT -- Distinct is used for readability
substring(msdb..sysjobs.name,1,100) AS [Job Name], 
'Enabled'=case 
WHEN msdb..sysjobs.enabled = 0 THEN 'No'
WHEN msdb..sysjobs.enabled = 1 THEN 'Yes'
end, 
substring(msdb..sysjobschedules.name,1,30) AS [Name of the schedule],
'Frequency of the schedule execution'=case
WHEN msdb..sysjobschedules.freq_type = 1 THEN 'Once'
WHEN msdb..sysjobschedules.freq_type = 4 THEN 'Daily'
WHEN msdb..sysjobschedules.freq_type = 8 THEN 'Weekly'
WHEN msdb..sysjobschedules.freq_type = 16 THEN 'Monthly'
WHEN msdb..sysjobschedules.freq_type = 32 THEN 'Monthly relative' 
WHEN msdb..sysjobschedules.freq_type = 32 THEN 'Execute when SQL Server Agent starts'
END, 
'Units for the freq_subday_interval'=case
WHEN msdb..sysjobschedules.freq_subday_type = 1 THEN 'At the specified time' 
WHEN msdb..sysjobschedules.freq_subday_type = 2 THEN 'Seconds' 
WHEN msdb..sysjobschedules.freq_subday_type = 4 THEN 'Minutes' 
WHEN msdb..sysjobschedules.freq_subday_type = 8 THEN 'Hours' 
END, 
cast(cast(msdb..sysjobschedules.active_start_date as varchar(15)) as datetime) as active_start_date, 
cast(cast(msdb..sysjobschedules.active_end_date as varchar(15)) as datetime) as active_end_date, 
cast(cast(msdb..sysjobschedules.next_run_date as varchar(15)) as datetime) as next_run_date, 
msdb..sysjobschedules.next_run_time, 
msdb..sysjobschedules.date_created

FROM msdb..sysjobhistory (NOLOCK) INNER JOIN
msdb..sysjobs (NOLOCK) ON 
msdb..sysjobhistory.job_id = msdb..sysjobs.job_id INNER JOIN
msdb..sysjobschedules (NOLOCK) ON msdb..sysjobs.job_id = msdb..sysjobschedules.job_id