mrog
/ ham_stat.sql
Last active
September 6, 2019 19:34
SQL queries to gather ham callsign statistics for https://ham.stackexchange.com/questions/15262/what-fraction-of-2x2-usa-call-signs-are-vanity-calls
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| -- Total number of active callsigns for individuals | |
| select count(*) | |
| from dbo.pubacc_am am | |
| join dbo.pubacc_hd hd on am.unique_system_identifier = hd.unique_system_identifier | |
| join dbo.pubacc_en en on en.unique_system_identifier = hd.unique_system_identifier | |
| where en.applicant_type_code = 'I' and hd.license_status = 'A' | |
| -- Number of active 2X2 vanity callsigns for individuals | |
| -- See query in next section |