| |
by: Bob Bedford |
last post by:
I've a query like this:
select coealesce(table1.code1, table2.code1) as mycode
from...
where mycode = 'XXX'
But this query fails. Unknow column mycode in where clause.
why ??? "coalesce() as" doesn't work ?
|
by: Jeff Roughgarden |
last post by:
I am using a clever product called SQL Expert Pro to optimize
problematic SQL statements. It works by generating syntactically
identical variations of the original SQL, finding all unique execution
plans, and batch testing them.
Anyway, it generally turns out that a very odd change dramatically
improves performance (for a PeopleSoft database on SQL Server 7). Run
time goes from 52 seconds to 8 seconds.
The change is to replace a join...
|
by: Steffen Vulpius |
last post by:
Hi everybody,
VARCHAR has a higher precedence than CHAR. If you have a query
SELECT COALESCE(c1,c2) FROM T1
where c1 is CHAR(5) and c2 is VARCHAR(10), I would expect the return
type to be varchar(10) similiar to UNION. However it turns out to
be CHAR(10). Does anyone know why that is so?
|
by: John Greve |
last post by:
Any ideas on why my the result 'green' row
column DELTA does not yield -1 for?
That is not how I expected COALESCE( ... ) to work.
Every other row for DELTA (including 'black')
comes out the way I expected.
Thanks for considering this,
John G.
|
by: darrel |
last post by:
I have three tables making a many-to-many relationship:
Companies
CoID | CoName
Link
CoID | InsID
Insurers
InsID | InsName
|
| |
by: Don |
last post by:
If I have an SQL query which returns an aggregate of several decimal fields
like so:
(sum(COALESCE(myDecimal1, 0)+
sum(COALESCE(myDecimal2, 0)+
sum(COALESCE(myDecimal3, 0)) as MyTotal
I get an rounded integer in MyTotal.
However, if I do the following:
|
by: db2group88 |
last post by:
hi, we are using db2 v8.2 EE on windows, with jcc driver. try to create
a join view, after that i check the syscat.columns table, for those
decimal field use COALESCE method, all the length become 11 instead of
the actual length of the field inside table, can anyone explain this to
me ? thank you
create view ML101PD.ARJMBAL1 (ARNM05, ARNO01, ARNM01, ARNO07, ARNO08,
ARNO09, ARFL17, ARFL03, ARMO12, ARDY12, ARCC12, ARYR12, ARNO15,...
|
by: raysefo |
last post by:
Hi,
I m trying to use coalesce but i m getting this error below, btw i m
using db2 8.2.
what i m doing is;
....
where eh.toblm = coalesce(NULL,eh.toblm)
SQL0206N "NULL " is not valid in the context where it is used.
|
by: r035198x |
last post by:
This is a short tip describing the sql coalesce function.
Description
COALESCE accepts a comma separated list of parameters and returns
the first value that is not null in that list or null if all the arguments are null.
Thus
COALESCE (a1, a2, a3, ..., an)
will return a1 if a1 is not null, a2 if a1 is null but a2 is not null,
a3 if a1, a2 are null but a3 is not null and so on.
|
by: =?Utf-8?B?R1ROMTcwNzc3?= |
last post by:
Hi All, is this the correct way to Coalesce a session var -
<%Session("EMPLOYETOKENS") =
tokens.Fields.Item(COALESCE(SUM("JBCLTokens"),0)).Value%?
Thank you
|
by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
|
| |
by: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
|
by: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
|
by: agi2029 |
last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own....
Now, this would greatly impact the work of software developers. The idea...
|
by: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
|
by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
|
by: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
|
| |
by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
|
by: bsmnconsultancy |
last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...
|
1
