Query

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От Eduardo Vázquez Rodríguez
Тема Query
Дата
Msg-id 59B41C14544D314889E6FA384A307A921C9127@osiris.insys-corp.com.mx
обсуждение исходный текст
Ответы Re: Query  (Bruno Wolff III <bruno@wolff.to>)
Список pgsql-novice

Hi I have a table called "master" which look like this

id_master      |             month    |   day        |   infotype
<Serial> PK  |   <Varchar 3> |  <Varchar 3>  | <Varchar 5>
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
1       |       May     |  27           |       121
2       |       May     |  27           |       122
3       |       May     |  27           |       123
4       |       May     |  28           |       121
5       |       May     |  28           |       122

Which Primary Key (id_master) is the Foreign Key (id_master) of another table called "masterdetail" which look like this

id_masterdetail        id_master        argument         color
<Serial> PK        |   <int4>         |  <Varchar 30>  | <Varchar 10>
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
1               |       121     |  house        | blue
2               |       121     |  house                | blue
3               |       121     |  building     | white
4               |       122     |  building     | white
5               |       122     |  house                | yellow

I try tu run a query to ask for all the arguments, which color has the value "blue" and they had the date "May" "27"

I wrote something like this

select argument from masterdetail, master where color like 'blue' 
and master.month like 'May'
and master.day like '27'
and master.id_master = masterdetail.id_master;

But  I cant get the correct results!

How can I fix it?
---
Eduardo Vázquez Rodríguez <evazquez@insys-corp.com.mx>
Insys
Soluciones Integrales de Seguridad en TI
Tel (52 55) 5322 5218
Implantación
---

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