Join table with empty data

Discussion in 'PHP' started by cesarcesar, Jan 7, 2007.

0
  1. #1
    Hello,

    I'm a novice, and am having issues get a JOIN to work properly. The following code is correct for pulling field values that HAVE a value, but when a field i am requesting has a value like Null, Space, or just empty, the whole query comes back empty.

    It was suggested i use TRIM in my call, but i'm not exactly sure how to use properly.

    As far as each table, the fields that are empty are set to ALLOW NULL. Thanks for the help.

    
Select
company.company_name,
company.company_username,
company.company_clients_served,
company.company_status,
note.note_text,
address.address_street1,
address.address_street2,
address.address_zip,
address.address_zip_ext,
county.county_id,
city.city_name,
taxes_states.state_id,
email.email_address,
url.url_path,
url.url_name,
company_type.company_type_id
From
company
Inner Join note ON company.note_id = note.note_id
,
address
Inner Join connector_address ON company.company_id = connector_address.ref_id AND connector_address.address_id = address.address_id
Inner Join county ON address.county_id = county.county_id
Inner Join city ON address.city_id = city.city_id
Inner Join taxes_states ON address.state_id = taxes_states.state_id
Inner Join connector_email ON company.company_id = connector_email.ref_id
Inner Join email ON connector_email.email_id = email.email_id
Inner Join connector_url ON company.company_id = connector_url.ref_id
Inner Join url ON connector_url.url_id = url.url_id
,
company_type
Inner Join connector_company ON company_type.company_type_id = connector_company.company_type AND company.company_id = connector_company.company_id
Where company.company_id = '15'
    PHP:
     
    cesarcesar, Jan 7, 2007 IP
  2. wmtips

    wmtips Well-Known Member

    Messages:
    601
    Likes Received:
    70
    Best Answers:
    1
    Trophy Points:
    150
    #2
    I think you need "left join" instead of "inner join"
     
    wmtips, Jan 7, 2007 IP
  3. ccoonen

    ccoonen Well-Known Member

    Messages:
    1,606
    Likes Received:
    71
    Best Answers:
    0
    Trophy Points:
    160
    #3
    Yah, you either need to left outer join or use a sub-query in your from. Not sure about mySQL but I always use isNull(FIELDNAME,0) as IntField, isNull(FIELDNAME,'') as TxtField to work with null fields in sql server. Don't know what the equivalent of isnull is in mysql - but you could probably use this teqnique in your sub-selects if need-be :)
     
    ccoonen, Jan 7, 2007 IP