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Re: How to fetch rows with multiple values

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on 1/20/06 9:08 AM, trepca@xxxxxxxxx purportedly said:

> No, because I need AND operator between the terms.
> 
> Thanks anyway :)

Got it. Being thick. Just so I can save face, it may be more efficient to
do:

SELECT (min("ID") = avg("ID)) AS result, min("ID") as "ID" FROM
customer_mapping WHERE "Name"='john' or "Name"='peter'

This only works for one "set", but you can chain them in various ways to get
multiple results. Your app would have to check the result though.

> On 1/20/06, Keary Suska <hierophant@xxxxxxxxxx> wrote:
>> 
>> on 1/20/06 6:19 AM, trepca@xxxxxxxxx purportedly said:
>> 
>>> I have a table like this:
>>> 
>>> CREATE TABLE customer_mapping
>>> (
>>> "Name" varchar(128) NOT NULL,
>>> "ID" int8 NOT NULL
>>> )
>>> 
>>> Data looks something like this:
>>> 
>>> "john"     1
>>> "peter"    1
>>> "test"      2
>>> "george"  3
>>> 
>>> What I would like is to write a query where I can specify multiple names
>> and
>>> get the IDs which have them.
>>> 
>>> For now it seems the most efficient way is to use INTERSECT statement:
>>> 
>>> SELECT "ID" from customer_mapping WHERE "Name"='john'
>>> INTERSECT
>>> SELECT "ID" from customer_mapping WHERE "Name"='peter'
>>> 
>>> Although, I don't know how exactly to use ORDER, OFFSET and LIMIT in
>> this
>>> case...
>>> 
>>> Anyway, is there any better way of doing this? (I can't change the table
>>> structure.)
>> 
>> Maybe I'm a little thick this morning but can't you just do:
>> 
>> SELECT "ID" from customer_mapping WHERE "Name"='john' OR "Name"='peter' OR
>> "Name"='george' ORDER BY "ID" DESC


Keary Suska
Esoteritech, Inc.
"Demystifying technology for your home or business"



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