I have been asked to sort a locations table in ascending order. The data in the table currently looks something like this:
100F01
105B02
10B01
GK1-A01
201E12
20A01
However, when this data is displayed on the screen I want it to sort the numeric results in ascending order and then the string results in alphabetic order. The output should look something like this:
10B01
20A01
100F01
105B02
201E12
GK1-A01
I have tried using the following code
SELECT location FROM freelocations
ORDER BY CAST(SUBSTRING(location, 1, 2) AS INT)
however, as expected, this returns an error message because some locations don't start with a numeric:
Conversion failed when converting the varchar value 'GK' to data type int.
Any ideas or tips will be greatly appreciated
Maybe something like this?
select location
from freelocations
order by
case
when patindex('%[^0-9]%', location) = 1 then 9999999999
else cast(substring(location, 1, patindex('%[^0-9]%', location) - 1) as int)
end,
location
(It's a bit clumsy due to SQL Server lacking a regex replace function)
order by FIELD(string+0,1),string+0
but note that '10e20' will be misinterpreted!
Before casting you should check if the first 2 or 3 characters really are digits:
SELECT
location
FROM
freelocations
ORDER BY
CASE
WHEN location like '[0-9][0-9][0-9]%' THEN cast(substring(location,1,3) AS INT)
WHEN location like '[0-9][0-9]%' THEN cast(substring(location,1,2) AS INT)
ELSE 9999
END
Try this to avoid casting:
SELECT
x,
RIGHT('000' +LEFT (x,patindex('%[^0-9]%',x)-1),3) sort1,
RIGHT (x,LEN(x)-patindex('%[^0-9]%',x)+1) sort2
FROM
(
SELECT '123asdf' x
UNION
SELECT '12asdf'
UNION
SELECT '13asdf'
UNION
SELECT '12zsdf'
) X
ORDER BY sort1 ,sort2
Related
I am getting trouble to write SQL sort Query,
I have table as follows
And I want to sort above data as, First should number and then alphabets and last special symbols like following table.
First numbers should sort like 1,2,3,11,22,33
then Alphabets should sort like a ,b,c,..z
and then symbols,
like following table
I have tried many ways but still not getting correct way, please help me to write query.
You can use a CASE WHEN on the ORDER BY to create some groups:
SELECT *
FROM table_name
ORDER BY
CASE WHEN LEFT(FilterParameterValue, 1) LIKE '[0-9]' OR LEFT(FilterParameterValue, 2) LIKE '-[0-9]' OR LEFT(FilterParameterValue, 2) LIKE '+[0-9]' THEN 1 ELSE 0 END DESC, -- group for numbers
CASE WHEN ISNUMERIC(FilterParameterValue) = 1 THEN CAST(FilterParameterValue AS MONEY) ELSE NULL END ASC, -- order the numeric values
CASE WHEN LEFT(FilterParameterValue, 1) LIKE '[A-Za-z]' THEN 1 ELSE 0 END DESC, -- group for chars from A to Z (capital / non capital)
colName
demo on dbfiddle.uk
Try using regex in order by clause.. For ex
ORDER BY IF(FilterParameterValue RLIKE '^[a-z]', 1, 2), FilterParameterValue
You can try to cast your Column to Numeric Type then ordered
SELECT * FROM table_name ORDER BY TRY_CAST(Column_Name as Type)
select rptName
from RptTable
where rpt_id in (
select LEFT(Reports, NULLIF(LEN(Reports)-1,-1))
from repoAccess1
where uid = 'VIKRAM'
)
this is my sql query In which i have use the sub query to access selected field
in this sub query returns
select LEFT(Reports, NULLIF(LEN(Reports)-1,-1))
from repoAccess1
where uid = 'VIKRAM'
Returns
1,2
that means the query should be like
select rptName
from RptTable where rpt_id in (1,2)
But i m getting this error
Msg 8114, Level 16, State 5, Line 1
Error converting data type nvarchar to numeric.
could anyone tell me ow to modify to get exact ans
It's a little hard to tell without the concrete table definitions, but I'm pretty sure you're trying to compare different data types to each other. If this is the case you can make use of the CAST or the CONVERT function, for example:
SELECT
[rptName]
FROM [RptTable]
WHERE [rpt_id] IN
(
SELECT
CONVERT(int, LEFT([Reports], NULLIF(LEN([Reports]) - 1, -1)))
FROM [repoAccess1]
WHERE [uid] = 'VIKRAM'
)
UPDATE: Since you have updated your question: The LEFT function returns results of either varchar or nvarchar data type. So the resulting query would be
SELECT
[rptName]
FROM [RptTable]
WHERE [rpt_id] IN('1', '2')
Please note the apostrophes (is this the correct term?) around the values. Since [rpt_id] seems to be of data type int the values cannot implicitly be converted. And that's where the aforementioned CAST or CONVERT come into play.
If I understand correctly, the subquery is returning a single row with a value of '1,2'. This is not a number, hence the error.
Before continuing, let me emphasize that storing values in comma delimited string is not the SQL-way of doing things. You should have one row per id, with proper types and foreign keys defined.
That said, sometimes we are stuck with other people's really bad design decisions. If this is the case, you can use LIKE:
select rptName
from RptTable r
where exists (select 1
from repoAccess1 a
where a.uid = 'VIKRAM' and
',' + a.reports + ',' like '%,' + cast(r.rpt_id as varchar(255)) + ',%'
);
select rptName
from RptTable
where rpt_id in (
select CAST(LEFT(Reports, NULLIF(LEN(Reports)-1,-1)) AS INT) as Val
from repoAccess1
where uid = 'VIKRAM'
)
Your query would work fine when (LEFT(Reports, NULLIF(LEN(Reports)-1,-1)) ) returns either 1 or 2 since SQL Server implicitly converts the varchar value to numeric.
It seems there might be a data issue. One of the data returned by LEFT function is non-numeric. In order to find that particular record you can use isnumeric function. Try like this,
SELECT rptName
FROM RptTable
WHERE rpt_id IN (
SELECT LEFT(Reports, NULLIF(LEN(Reports) - 1, - 1))
FROM repoAccess1
WHERE uid = 'VIKRAM'
AND ISNUMERIC(LEFT(Reports, NULLIF(LEN(Reports) - 1, - 1))) = 1
)
So I am new the whole SQL Query business but I need some help with two issues. My goal is to have anything in the Column "EnvironmentName" that has the word "Database" in Column "NodeName" to be displayed in the query results. I did this with
FROM [Backbone_ASPIDER].[dbo].[vw_CFGsvr_Con]
WHERE NodeName = 'Database'
ORDER BY EnvironmentName asc
WHERE NodePath
Results of Query:
I am able to get my query results but would like to remove the rows with NULL. I have tried to use "IS NOT NULL" but SQL Server Management Studio labeles this as "incorrect syntax."
What I have tried:
FROM [Backbone_ASPIDER].[dbo].[vw_CFGsvr_Con]
WHERE NodeName = 'Database'
ORDER BY EnvironmentName asc IS NOT NULL
WHERE NodePath
Thank you in advance!
Your query is pretty close..
1: You have to specify a specific column to not be null while using IS NOT NULL.
So modify your query to:
FROM [Backbone_ASPIDER].[dbo].[vw_CFGsvr_Con]
WHERE NodeName = 'Database' AND EnvironmentName IS NOT NULL
ORDER BY EnvironmentName asc
WHERE NodePath
2: Check out this article about trimming parts of strings from query results
http://basitaalishan.com/2014/02/23/removing-part-of-string-before-and-after-specific-character-using-transact-sql-string-functions/
Where clause will come first and Then order by statement
Like following way
Select * FROM [Backbone_ASPIDER].[dbo].[vw_CFGsvr_Con]
WHERE [Backbone_ASPIDER].[dbo].[vw_CFGsvr_Con].[NodeName] = 'Database' AND [Backbone_ASPIDER].[dbo].[vw_CFGsvr_Con].[EnvironmentName] IS NOT NULL
ORDER BY [Backbone_ASPIDER].[dbo].[vw_CFGsvr_Con].[EnvironmentName] asc
EDIT: I just noticed you removed this from your OP, so feel free to disregard if you took care of that.
I don't think anyone addressed the substring problem yet. There's several ways you could get at this depending on how complex the strings are you have to slice up, but here's how I'd do it
-- Populating some fake data, representative of what you've got
if object_id('tempdb.dbo.#t') is not null drop table #t
create table #t
(
nPath varchar(1000)
)
insert into #t
select '/Database/Mappings/Silver/Birthday' union all
select '/Database/Connections/Blue/Happy'
-- First, get the character index of the first '/' after as many characters the word '/database/' takes up.
-- You could have hard coded this value too. Add 1 to it so that it moves PAST the slash.
;with a as
(
select
ixs = charindex('/', nPath, len('/Database/') + 1),
-- Get everything to the right of what you just determined with all the charindex() stuff
ss = right(nPath, len(nPath) - charindex('/', nPath, len('/Database/') + 1)),
nPath
from #t
)
-- Now just take the left of the now-cleaned-up string from start to the first pipe
select
ixs,
ss,
color = left(ss, charindex('/', ss) -1),
nPath
from a
SQL SERVER 2005
SQL Sorting :
Datatype varchar
Should sort by
1.aaaa
5.xx
11.bbbbbb
12
15.
how can i get this sorting order
Wrong
1.aaaa
11.bbbbbb
12
15.
5.xx
On Oracle, this would work.
SELECT
*
FROM
table
ORDER BY
to_number(regexp_substr(COLUMN,'^[0-9]+')),
regexp_substr(column,'\..*');
You could do this by calculating a column based on what's on the left hand side of the period('.').
However this method will be very difficult to make robust enough to use in a production system, unless you can make a lot of assertions about the content of the strings.
Also handling strings without periods could cause some grief
with r as (
select '1.aaaa' as string
union select '5.xx'
union select '11.bbbbbb'
union select '12'
union select '15.' )
select *
from r
order by
CONVERT(int, left(r.string, case when ( CHARINDEX('.', r.string)-1 < 1)
then LEN(r.string)
else CHARINDEX('.', r.string)-1 end )),
r.string
If all the entries have this form, you could split them into two parts and sort be these, for example like this:
ORDER BY
CONVERT(INT, SUBSTRING(fieldname, 1, CHARINDEX('.', fieldname))),
SUBSTRING(fieldname, CHARINDEX('.', fieldname) + 1, LEN(fieldname))
This should do a numeric sort on the part before the . and an alphanumeric sort for the part after the ., but may need some tuning, as I haven't actually tried it.
Another way (and faster) might be to create computed columns that contain the part before the . and after the . and sort by them.
A third way (if you can't create computed columns) could be to create a view over the table that has two additional columns with the respective parts of the field and then do the select on that view.
SELECT top 1
case
when VR = -99999.99
then 0
else cast((VR*1.732) as decimal(38,3))
end
FROM pseb.dbo.datasource
where FeederID=5003
order by datetime desc
The above query is working fine, but I need to return varchar value '--' instead of returning 0
if I do like that
SELECT top 1
case
when VR = -99999.99
then '--'
else cast((VR*1.732) as decimal(38,3))
end
FROM pseb.dbo.datasource
where FeederID=5003
order by datetime desc
means it returns the following error:
Msg 8114, Level 16, State 5, Line 1 Error converting data type varchar
to numeric.
please help me to solve it
The problem is that you are returning two different data types from the same column. The rule with SQL Server that numeric types take precedence over string types, i.e. in a situation like yours a string gets converted to a number, not the other way around.
So to solve this you can cast your number to a string.
One option is to do something like this:
SELECT top 1
case when VR = -99999.99 then '--'
else
cast
(
cast((VR*1.732) as decimal(38,3)
)
as varchar(50))
end
FROM pseb.dbo.datasource where FeederID=5003 order by datetime desc