Hai every body,
i am using postgres 7.3 version, For a varchar (string) data column, in this column i filled the numbers (1,2,3 ...10,11,..... etc) alone. i sorted this column, but sorting values are comming 1,10,11,2,20... . etc like. but i need 1,2,3,10,22 like.
please tell me the solution for this problem.
thanks and regards,
1  10763  michaelb 534
Recognized Expert Contributor
If you always have integer values on this column it's better to define it as integer type, not a varchar.
As for your questions try one of the following: -
select * from tab_name order by column_name::integer;
-
select * from tab_name order by cast(column_name AS integer);
-
select * from tab_name order by int8 (column_name);
-
You can replace * with column_name or whatever select list you may need
Sign in to post your reply or Sign up for a free account.
Similar topics | |
by: Dean G |
last post by:
I need to compare two values. one from a text field 'bid' and the other
from a field in an sql server database 'maxbid'.
The problem is the column in the database has decimal as its data type
and i'm getting a type mismatch. does anyone know how to convert 'bid'
into decimal from varchar? the field datatype doesnt necessarily have
to be decimal although i need two decimal places so it cant be an int.
Thanks,
Dean
|
by: Sanjay Minni |
last post by:
What is the datatype to be used
for Primary Key columns for most
optimised access given that
- There will be a single column primary key only
- The values will only be integers (but as
strings) at least 12 digits (characters) long
- all positions will be occupied (no leading 0's)
- Tables may have upto 1m+ rows
|
by: Rhett Liu |
last post by:
Hi,guys!
I have a table below:
CREATE TABLE rsccategory
(
categoryid NUMERIC(2) IDENTITY(1,1),
categoryname VARCHAR(20) NOT NULL,
PRIMARY KEY(categoryid)
)
Then I do:
|
by: Bill |
last post by:
In an effort to improve the speed of queries against my main table,
I'll be indexing a column whose data type is varchar(50).
Would I be better off (better performance) if I changed the column's
data type to some numeric type? I would have to update the column's
data to accomodate this, but I would do it if this offers a
performance gain.
-- Bill
|
by: Alex Ayzin |
last post by:
Hi,
I have a column in my WinGrid, that's being populated with numeric data, but
it's of String datatype(business rule requires to have these numbers as
varchars in DB). On top of that, I need to be able to sort on that
particular column. But because column contains character data(even though it
looks like digits), the sorting is all out of whack, e.g, 1, 11, 12,
13.....2, 21, 22, so on, you got the picture.I'm using the typed dataset as...
| | |
by: bevanward |
last post by:
Hi All
I am finding unexpected results when inserted into a newly created
table that has a field of datatype int identity (1,1).
Basically the order I sort on when inserting into the table is not
reflected in the order of the values from the identity field.
Have I been wrong in assuming that it should reflect the order from the
sort?
|
by: Beowulf |
last post by:
I was just messing around with some ad hoc views and table returning
UDFs today so I could look at and print out data from a small table
and noticed something strange.
If I stick my select statement into a View the columns are returned in
the order I specify in the SELECT, but if the same statement is in a UDF
(so I can specify a parameter), the columns are not returned in the
order specified in statement.
I know that relations don't...
|
by: jjtechy |
last post by:
The data like 0.06234 that is imported from another server is getting changed as
6.234....E-2 in my local.it is looking as 0.06234 in that server.The datatype of that column is varchar(50) in both the servers.If i try to manupulate it,it gives the err "Error converting data type varchar to numeric." Why does it happen?how to resolve it?Help me out..
Thanks,
JJ
|
by: Krishna Ladwa |
last post by:
In Sql Server 2000 Version, I found that no Notification message box appears when converting text column to varchar but the data gets truncated to the given size for the varchar. Whereas it appears when you convert the varchar column to text column.
Do this through Enterprise Manager Console
Create a New table with a column as varchar datatype from Enterprise Manager table created Open the table and add one row Successfully added the...
|
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: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
|
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: conductexam |
last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one.
At the time of converting from word file to html my equations which are in the word document file was convert into image.
Globals.ThisAddIn.Application.ActiveDocument.Select();...
|
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.
| |
