Advertisement

06.05.2007 at 06:00AM PDT, ID: 22613498
[x]
Attachment Details

Update inner join query help

Asked by mock5c in PostgreSQL Database

Tags: update, join, inner, query

I'm a bit nervous about running an update-inner join type query with postgres since it's different from MySQL and SQL Server that I"m used to (which is much easier).  Last time I attempted this with Postgres, I ended up updating over a million rows, not the intended few hundred.  Please help me with this query.

The following queries retrieves exactly the rows I need to update:

select * from finst_t f
inner join store_t s on f.store_id=s.id
inner join loc_t l on s.loc_id=l.id
where l.id=201327 and file_vgroup ilike 'sarp%'

In MySQL or SQL Server, I would do the following for the update-inner join:

update finst_t f
inner join store_t s on f.store_id=s.id
inner join loc_t l on s.loc_id=l.id
set l.id=123456
where l.id=201327 and file_vgroup ilike 'sarp%'

I know this is not the style used for postgres but last time I tried to build up a query with Postgres after reading the documentation, it was a disaster.  Please help me build a query to do this in Postgres.

2nd question, I'm using Postgres 7.3.  In later versions, do they have the same style of update-inner join queries as MySQL and SQL server?
Start Free Trial
[+][-]06.06.2007 at 01:52AM PDT, ID: 19223518

At Experts Exchange, members can ask their questions to thousands of technology professionals, also known as Experts. Experts compete and collaborate to answer those questions by leaving comments like this one.

Start your 7-day free trial to view this Expert Comment or ask the Experts your question.

 
[+][-]06.07.2007 at 12:29AM PDT, ID: 19231431

View this solution now by starting your 7-day free trial. Setting up your free trial is quick, easy, and secure. We will return you to this solution, unlocked, when you're done.

 

About this solution

Zone: PostgreSQL Database
Tags: update, join, inner, query
Sign Up Now!
Solution Provided By: earthman2
Participating Experts: 2
Solution Grade: A
 
 
[+][-]06.15.2007 at 11:27AM PDT, ID: 19294221

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

Start your 7-day free trial to view this Author Comment or ask the Experts your question.

 
 
Loading Advertisement...
20080716-EE-VQP-32