Olgierd,
This can be done, but it relies on a very strong metadata component that is not
available in PG.
In db2eee it's completed by having a construct known as automatic summary
tables - similar to materialized views
Where in ddl you tell the system how the aggregate and base table are
I generally would separate different apps into different schema.
doug
-Original Message-
From: pgsql-sql-ow...@postgresql.org [mailto:pgsql-sql-ow...@postgresql.org] On
Behalf Of David Johnston
Sent: Friday, September 02, 2011 8:20 AM
To: Charlie
Cc: pgsql-sql@postgresql.org
Subject:
Hi,
We'd like to give our applications truncate capability, but that would also
give them drop table permission, which we don't want them to have.
So, we created a truncate function that uses the definers security context.
The issue is that we now have 1000's of programs to change to use the
I don't know how you would partition by size.
Date is a good candidate, and roughly wouldn't you have the same number of
tx's/day
You'll only benefit query performance if you include the partitioning column in
the where clause.
If you have a surrogate pk, you could also use this to partition.
First remove the python
select * from jfcs_balancedue(parameter) f(enrolleeid varchar,course_cost
decimal, paid_amt decimal)
the jfcs_balancedue is a table function, f is the alias (with the column alias
list/datatype of the columns returned by the function).
Doug
-Original Message-
Nilesh,
They should generate equivalent results,
But the difference is the constraint on bu.bid=5.
In the 1st case it's being done after the join.
In the 2nd case it is being done before the join.
The end result should be the same, but the execution time can be hugely
different.
Suppose b
A comment on the MS access/PG problem.
We experienced this problem as well and I isolated the problem to access's
support of timestamp.
PG defaults to timestamp(6), While access only supports timestamp(2).
When access fills the grid from the table, the values are truncated to ts(2).
To do a better job, I’d need to see the data dictionary – eg to understand what
capacity means. Is it the capacity of a model? Ok, but what about contact
info for a model? Is this really the contact info of the plant?
But this is what I’d do
[cid:image002.png@01CAF33E.5FD30FB0]
Mfg –
I've been using the generate_series function and finding it very useful. It
generates an integer, but I cast to 'day' interval.
Might be useful.
doug
-Original Message-
From: pgsql-sql-ow...@postgresql.org [mailto:pgsql-sql-ow...@postgresql.org] On
Behalf Of Richard Broersma
Sent:
Here's a thought
create table test1(col1 decimal(7,1));
insert into test1
values(77.1),(77.2),(134.1),(134.2),(134.3),(5.1),(5.2)
select col1::integer from test1;
select substr((col1-col1::integer),3) from test1;
doug
From: pgsql-sql-ow...@postgresql.org
Hello,
I believe types are compatible if they can be cast automatically.
The pg_cast table record all possible casts between types. If it castcontext
is 'a' then I belive it's an automatic conversion which is what I think you
want. 'i' implicit means that cast is possible, but must be
Hello,
I have a trigger function designed to encrypt source data on insert/update.
I have a problem where an assignment isn't happening, and I don't understand
why.
Any thoughts
In the function, I unnecessarily reset new.pii_ccard_number to null.
It must be null already for the else condition
Hello,
I would have designed as ship cabin (PK of ship_id, Cabin_id)
And a separate chain of cabin_type cabin_category cabin
Type, and category are group classifiers and shouldn't be used to define the
uniqueness of a cabin.
Take an example where the cabin category and type are defined
-
From: pgsql-sql-ow...@postgresql.org [mailto:pgsql-sql-ow...@postgresql.org] On
Behalf Of Louis-David Mitterrand
Sent: Wednesday, March 03, 2010 10:07 AM
To: pgsql-sql@postgresql.org
Subject: Re: [SQL] check constraint on multiple tables?
On Wed, Mar 03, 2010 at 10:03:05AM -0600, Little, Douglas
Louis,
Interesting discussion. Always fun to think about real world stuff.
We have a similar problem for comparing hotel rooms.
So the issue is that you aren't originating the data, just classifying it.
I'd move toward a scheme where you reclassify the line marketing speak to
common lay
Hi,
I have very complex sql (generated by cognos) I'm porting from Teradata that
basically uses column alias in the calculated columns.
Is there any way to do this type of thing in Psql?
Essentially I need to do is refer to a calculated column later in the select
list (but far more complex -
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