shack attack (National Rail)

shack_attack_national_rail.sql

select rank() over (order by `first visited`) as sequence, full_station as station, `first visited`, `last visited`, `number of visits`
from (
    select case
        when station = 'Adlington' then (select 'Adlington (Cheshire)' union select 'Adlington (Lancashire)')
        when station = 'Bentley' then case route
            when 'South Western Railway' then 'Bentley (Hampshire)'
            when 'Northern' then 'Bentley (South Yorkshire)'
            else (select 'Bentley (Hampshire)' union select 'Bentley (South Yorkshire)')
        end
        when station = 'Bramley' then case route
            when 'GWR' then 'Bramley (Hampshire)'
            when 'Northern' then 'Bramley (West Yorkshire)'
            else (select 'Bramley (Hampshire)' union select 'Bramley (West Yorkshire)')
        end
        when station = 'Brampton' then case route
            when 'Greater Anglia' then 'Brampton (Suffolk)'
            when 'Northern' then 'Brampton (Cumbria)'
            else (select 'Brampton (Suffolk)' union select 'Brampton (Cumbria)')
        end
        when station = 'Earlswood' then case route
            when 'Southern' then 'Earlswood (Surrey)'
            when 'Thameslink' then 'Earlswood (Surrey)'
            when 'West Midlands Railway' then 'Earlswood (West Midlands)'
            else (select 'Earlswood (Surrey)' union select 'Earlswood (West Midlands)')
        end
        when station = 'Garth' then (select 'Garth (Bridgend)' union select 'Garth (Powys)')
        when station = 'Gillingham' then case route
            when 'Southeastern' then 'Gillingham (Kent)'
            when 'Thameslink' then 'Gillingham (Kent)'
            when 'South Western Railway' then 'Gillingham (Dorset)'
            else (select 'Gillingham (Kent)' union select 'Gillingham (Dorset)')
        end
        when station = 'Hope' then case route
            when 'Northern' then 'Hope (Derbyshire)'
            when 'EMR' then 'Hope (Derbyshire)'
            when 'Transport for Wales' then 'Hope (Flintshire)'
            else (select 'Hope (Derbyshire)' union select 'Hope (Flintshire)')
        end
        when station = 'London Road' then case route
            when 'Southern' then 'London Road (Brighton)'
            when 'South Western Railway' then 'London Road (Guildford)'
            else (select 'London Road (Brighton)' union select 'London Road (Guildford)')
        end
        when station = 'Millbrook' then case route
            when 'London Northwestern Railway' then 'Millbrook (Bedfordshire)'
            when 'South Western Railway' then 'Millbrook (Hampshire)'
            else (select 'Millbrook (Bedfordshire)' union select 'Millbrook (Hampshire)')
        end
        when station = 'Moreton' then case route
            when 'Merseyrail' then 'Moreton (Merseyside)'
            when 'South Western Railway' then 'Moreton (Dorset)'
            else (select 'Moreton (Merseyside)' union select 'Moreton (Dorset)')
        end
        when station = 'Newport' then case route
            when 'GWR' then 'Newport (South Wales)'
            when 'Transport for Wales' then 'Newport (South Wales)'
            when 'CrossCountry' then 'Newport (South Wales)'
            when 'Greater Anglia' then 'Newport (Essex)'
            else (select 'Newport (South Wales)' union select 'Newport (Essex)')
        end
        when station = 'Queen''s Park' || station = 'Queens Park' then case route
            when 'Scotrail' then 'Queens Park (Glasgow)'
            when 'London Overground' then 'Queens Park (London)'
            else (select 'Queens Park (Glasgow)' union select 'Queens Park (London)')
        end
        when station = 'Rainham' then case route
            when 'Southeastern' then 'Rainham (Kent)'
            when 'Thameslink' then 'Rainham (Kent)'
            when 'c2c' then 'Rainham (Essex)'
            else (select 'Rainham (Kent)' union select 'Rainham (Essex)')
        end
        when station = 'Reedham' then case route
            when 'Southern' then 'Reedham (London)'
            when 'Greater Anglia' then 'Reedham (Norfolk)'
            else (select 'Reedham (London)' union select 'Reedham (Norfolk)')
        end
        when station = 'St Margarets' then case route
            when 'South Western Railway' then 'St Margarets (London)'
            when 'Greater Anglia' then 'St Margarets (Hertfordshire)'
            else (select 'St Margarets (London)' union select 'St Margarets (Hertfordshire)')
        end
        when station = 'Swinton' then (select 'Swinton (Manchester)' union select 'Swinton (South Yorkshire)')
        when station = 'Whitchurch' then case route
            when 'Transport for Wales' then (select 'Whitchurch (Shropshire)' union select 'Whitchurch (Cardiff)')
            when 'South Western Railway' then 'Whitchurch (Hampshire)'
            else (select 'Whitchurch (Shropshire)' union select 'Whitchurch (Cardiff)' union select 'Whitchurch (Hampshire)')
        end
        else station
    end as full_station
    , convert_tz(min(`time stamp`), @@session.time_zone, 'Europe/London') as `first visited`
    , convert_tz(max(`time stamp`), @@session.time_zone, 'Europe/London') as `last visited`
    , count(0) as `number of visits`
    from (
        select route, `boarding place` as station, `boarding time stamp` as `time stamp` from journeys where network = 'National Rail'
        union select route, `alighting place`, `alighting time stamp` from journeys where network = 'National Rail'
    ) as source group by full_station
) source
where full_station not in (
    'Aldgate East'
    , 'Acton Town'
    , 'Bounds Green'
    , 'Boston Manor'
    , 'Baker Street'
    , 'Cockfosters'
    , 'Chesham'
    , 'Croxley'
    , 'East Ham'
    , 'East Putney'
    , 'Embankment'
    , 'Earl''s Court'
    , 'Finchley Road'
    , 'High Barnet'
    , 'Hillingdon'
    , 'Holloway Road'
    , 'North Acton'
    , 'Northwood'
    , 'Newbury Park'
    , 'Oakwood'
    , 'Stanmore'
    , 'Turnpike Lane'
    , 'Watford'
    , 'Wembley Park'
    , 'Wimbledon Park'
)
order by `sequence`