Relating data for 2 columns in the same table.

Question

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Hello, I made a query two retrieve address information from the database, the problem is that there are 2 columns, 'cd_cidade' and 'cd_cidade_comercial', which are city codes in the table 'prestador'. and we have a table named 'cidade' where have the 'cd_cidade' column as primary key and the column 'nm_cidade' that is the name for each code in the table.

How can I retrive the name from table 'cidade' to use it in place of 'cd_cidade' and 'cd_cidade_comercial'.

By the way the query is:

SQL

SELECT  COUNT (a.cd_atendimento),
        p.cd_prestador,
        p.nm_prestador,
        p.ds_endereco,
        p.nr_endereco,
        p.ds_bairro,
        p.ds_complemento,
        p.nr_cep,
        p.cd_cidade,
        p.ds_endereco_comercial,
        p.nr_endereco_comercial,
        p.ds_bairro_comercial,
        p.ds_complemento_comercial,
        p.ds_cep_comercial,
        p.cd_cidade_comercial,
        esp.ds_especialid,
        decode (p.cd_tip_presta, 1, 'Médico', 2, 'Odontologo')

FROM    dbamv.prestador p,
        dbamv.atendime a,
        dbamv.esp_med e,
        dbamv.especialid esp

WHERE   p.cd_prestador = a.cd_prestador
AND     p.cd_prestador = e.cd_prestador
AND     e.cd_especialid = esp.cd_especialid
AND     p.cd_tip_presta in (1,2)
AND     A.tp_atendimento = 'I'
AND     A.dt_atendimento between '01/jan/2012' and '31/dez/2012'
AND     A.dt_alta is not null

GROUP BY    p.cd_prestador,
            p.nm_prestador,
            p.ds_endereco,
            e.cd_especialid,
            esp.ds_especialid,
            p.tp_prestador,
            p.cd_tip_presta,
            p.nr_endereco,
            p.ds_bairro,
            p.ds_complemento,
            p.nr_cep,
            p.cd_cidade,
            p.ds_endereco_comercial,
            p.nr_endereco_comercial,
            p.ds_bairro_comercial,
            p.ds_complemento_comercial,
            p.ds_cep_comercial,
            p.cd_cidade_comercial

Thank you all. Any questions feel free to reply.

Posted 26-Nov-13 5:53am

Ricardo Santos da Silva

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2 solutions

Solution 1

Without wading through your query (and possibly messing it up - I'll leave that bit to you) you need to add a JOIN. If we just get a couple of fields:

SQL

SELECT p.cd_prestador, c.nm_cidade 
FROM prestador p
JOIN cicade c
ON p.cd_cidade=c.cd_cicade

Try that and you should see what I mean.

Posted 26-Nov-13 6:08am

OriginalGriff

Comments

Ricardo Santos da Silva 26-Nov-13 13:05pm

Used it and it works apart. but the query is complete, what I need is the city name instead the code in the original query.

OriginalGriff 26-Nov-13 14:03pm

So add the join to your query.
I'd do it myself, but it's a big query, and you wrote it! :laugh:

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Jörgen Andersson · Accepted Answer · 2013-11-26T09:17:00

You should in any case not mix ANSI joins with implicit joins.
Try this:

SQL

SELECT  COUNT (a.cd_atendimento),
        p.cd_prestador,
        p.nm_prestador,
        p.ds_endereco,
        p.nr_endereco,
        p.ds_bairro,
        p.ds_complemento,
        p.nr_cep,
        p.cd_cidade,
        p.ds_endereco_comercial,
        p.nr_endereco_comercial,
        p.ds_bairro_comercial,
        p.ds_complemento_comercial,
        p.ds_cep_comercial,
        p.cd_cidade_comercial,
        esp.ds_especialid,
        decode (p.cd_tip_presta, 1, 'Médico', 2, 'Odontologo'),
        c1.nm_cidade cidade,
        c2.nm_cidade cidade_comercial
        
        
FROM    dbamv.prestador p,
        dbamv.atendime a,
        dbamv.esp_med e,
        dbamv.especialid esp,
        cidade c1
        cidade c2
        
WHERE   p.cd_prestador = a.cd_prestador
AND     p.cd_prestador = e.cd_prestador
AND     e.cd_especialid = esp.cd_especialid
AND     p.cd_cidade=c1.cd_cidade
AND     p.cd_cidade_comercial=c2.cd_cidade
AND     p.cd_tip_presta in (1,2)
AND     A.tp_atendimento = 'I'
AND     A.dt_atendimento between '01/jan/2012' and '31/dez/2012'
AND     A.dt_alta is not null
 
GROUP BY    p.cd_prestador,
            p.nm_prestador,
            p.ds_endereco,
            e.cd_especialid,
            esp.ds_especialid,
            p.tp_prestador,
            p.cd_tip_presta,
            p.nr_endereco,
            p.ds_bairro,
            p.ds_complemento,
            p.nr_cep,
            p.cd_cidade,
            p.ds_endereco_comercial,
            p.nr_endereco_comercial,
            p.ds_bairro_comercial,
            p.ds_complemento_comercial,
            p.ds_cep_comercial,
            p.cd_cidade_comercial,
            c1.nm_cidade,
            c2.nm_cidade