I'm relatively new to MSSQL, so sorry if the question might sounds trivial. I want to concatenate multiple fields with a delimiter ,. However, when the field is empty, the extra , will be included in the result string as well. So is there an easy way to solve this problem? For example,
SELECT VRI.Street_Number_and_Modifier + ',' +
VRI.Street_Direction + ',' +
VRI.Street_Name + ',' +
VRI.Street_Direction + ',' +
VRI.Street_Suffix + ',' +
VRI.Street_Post_Direction + ',' +
VRI.Unit
FROM View_Report_Information_Tables VRI
This modified version of Lamak's handles NULL or strings containing only space/empty:
SELECT COALESCE(NULLIF(VRI.Street_Number_and_Modifier, '') + ',', '') +
COALESCE(NULLIF(VRI.Street_Direction, '') + ',', '') +
COALESCE(NULLIF(VRI.Street_Name, '') + ',', '') +
COALESCE(NULLIF(VRI.Street_Direction, '') + ',', '') +
COALESCE(NULLIF(VRI.Street_Suffix, '') + ',', '') +
COALESCE(NULLIF(VRI.Street_Post_Direction, '') + ',', '') +
COALESCE(NULLIF(VRI.Unit, ''), '')
FROM View_Report_Information_Tables VRI
I was able to get it to work with a slightly different approach. Putting the commas at the beginning of each field and then removing the first one with the STUFF function worked for me:
SELECT
STUFF((COALESCE(', ' + NULLIF(VRI.Street_Number_and_Modifier, ''), '') +
COALESCE(', ' + NULLIF(VRI.Street_Direction, ''), '') +
COALESCE(', ' + NULLIF(VRI.Street_Name, ''), '')) +
COALESCE(', ' + NULLIF(VRI.Street_Direction, ''), '')) +
COALESCE(', ' + NULLIF(VRI.Street_Suffix, ''), '')) +
COALESCE(', ' + NULLIF(VRI.Street_Post_Direction, ''), '')) +
COALESCE(', ' + NULLIF(VRI.Unit, ''), ''))
, 1, 2, '')
FROM View_Report_Information_Tables AS VRI
If the columns are empty instead of null, you can try this:
SELECT VRI.Street_Number_and_Modifier
+ CASE WHEN VRI.Street_Number_and_Modifier <> '' THEN ', ' ELSE '' END
+ VRI.Street_Direction
+ CASE WHEN VRI.Street_Direction <> '' THEN ', ' ELSE '' END
+ VRI.Street_Name
+ CASE WHEN VRI.Street_Name <> '' THEN ', ' ELSE '' END
+ VRI.Street_Direction
+ CASE WHEN VRI.Street_Direction <> '' THEN ', ' ELSE '' END
+ VRI.Street_Suffix
+ CASE WHEN VRI.Street_Suffix <> '' THEN ', ' ELSE '' END
+ VRI.Street_Post_Direction
+ CASE WHEN VRI.Street_Post_Direction <> '' THEN ', ' ELSE '' END
+ VRI.Unit
+ CASE WHEN VRI.Unit<> '' THEN ', ' ELSE '' END
FROM View_Report_Information_Tables VRI
For SQL 2008+
Using
ISNULL(Colmn1 + ', ', '')
Will always result with a leading comma in the end, so you'll have to handle it.
Example:
DECLARE #Column1 NVARCHAR(10) = 'Column1'
, #Column2 NVARCHAR(10) = 'Column2'
SELECT SUBSTRING( ISNULL(#Column1 + ', ', '') + ISNULL(#Column2 + ', ', '')
, 0 --Starting from 0 not 1 to remove leading comma
, LEN(ISNULL(#Column1 + ', ', '') + ISNULL(#Column2 + ', ', '')))
Or we could approach this the other way around and use the STUFF function to remove our beginning comma which looks cleaner, example:
SELECT STUFF (ISNULL(( ', ' + #Column1), '') + ISNULL(( ', ' + #Column2), ''), 1, 2, N'')
For SQL 2012+ we could use the CONCAT function and remove beginning comma using STUFF similar to our previous example but avoiding ISNULL:
SELECT STUFF(CONCAT( ', ' + #Column1, ', ' + #Column2), 1, 2, N'')
For SQL 2017+ CONCAT_WS was introduced where you can concatinate/join multiple string columns with a delimiter specified in the first argument of the function:
MS Documents CONCAT_WS
MS Doc Example:
SELECT CONCAT_WS(',' --delimiter
,'1 Microsoft Way', NULL, NULL, 'Redmond', 'WA', 98052) AS Address;
Try this:
SELECT COALESCE(VRI.Street_Number_and_Modifier + ',','') +
COALESCE(VRI.Street_Direction + ',','') +
COALESCE(VRI.Street_Name + ',','') +
COALESCE(VRI.Street_Direction + ',','') +
COALESCE(VRI.Street_Suffix + ',','') +
COALESCE(VRI.Street_Post_Direction + ',','') +
COALESCE(VRI.Unit,'')
FROM View_Report_Information_Tables VRI
Short or long answer?
Short answer - dont. This is a formatting issue, not a database issue.
Long answer - When you concatenate a string and a null in sql server, the result is null. So you can use combinations of ISNULL
SELECT ISNULL(afield + ',','') + ISNULL(bfield + ',','')
You have to use select case when IsNull(fieldname, '')= '' or ltrim(rtrim(fieldname))='') Then ... Else... end +...
Edit:
Was written from Android mobile.
Below your example.
The following translations (from German) apply, FYI:
Vorname: given name
Name: surname
Benutzer: User
And here's the example code:
CREATE VIEW [dbo].[V_RPT_SEL_Benutzer]
AS
SELECT
BE_ID AS RPT_UID,
CASE
WHEN (ISNULL(BE_Name, '0') = '0' OR LTRIM(RTRIM(BE_Name)) = '') AND (ISNULL(BE_Vorname, '0') = '0' OR LTRIM(RTRIM(BE_Vorname)) = '')
THEN ''
WHEN (ISNULL(BE_Name, '0') = '0' OR LTRIM(RTRIM(BE_Name)) = '')
THEN ISNULL(BE_Vorname, '')
WHEN (ISNULL(BE_Vorname, '0') = '0' OR LTRIM(RTRIM(BE_Vorname)) = '')
THEN ISNULL(BE_Name, '')
ELSE
ISNULL(BE_Name, '') + ', ' + ISNULL(BE_Vorname, '')
END AS RPT_Name,
ROW_NUMBER() OVER (ORDER BY BE_Name, BE_Vorname ASC) AS RPT_Sort
FROM T_Benutzer
You could use the ISNULL(field + ',', '')
SELECT isnull(VRI.Street_Number_and_Modifier + ',','')+
isnull(VRI.Street_Direction + ',','')+
isnull(VRI.Street_Name + ',','')+
isnull(VRI.Street_Direction + ',','')+
isnull(VRI.Street_Suffix + ',','')+
isnull(VRI.Street_Post_Direction + ',','')+
isnull(VRI.Unit,'')
FROM View_Report_Information_Tables VRI
I would agree completely with Jamiec's short answer.
Otherwise, I would look at a nasty solution of using a REPLACE([concat], ',,', ',') everywhere you concatenate two columns, and then figure out how to trim commas from the beginning and end of the string where the first and last columns might be empty. Very very messy.
Wanted to see if I can get it without using CASE but could not. A long-winded way of mine:
SELECT case when isnull(nullif(VRI.Street_Number_and_Modifier, ''),'')='' then '' else VRI.Street_Number_and_Modifier end
+ case when isnull(nullif(VRI.Street_Direction, ''),'')='' then '' else ',' + VRI.Street_Direction end
+ case when isnull(nullif(VRI.Street_Name, ''),'')='' then '' else ',' + VRI.Street_Name end
+ case when isnull(nullif(VRI.Street_Suffix, ''),'')='' then '' else ',' + VRI.Street_Suffix end
+ case when isnull(nullif(VRI.Street_Post_Direction, ''),'')='' then '' else ',' + VRI.Street_Post_Direction end
+ case when isnull(nullif(VRI.Street_Post_Direction, ''),'')='' then '' else ',' + VRI.Street_Post_Direction end
FROM View_Report_Information_Tables VRI
SELECT COALESCE(NULLIF(ad.UDEFPROPERTYADDRESS_ADDRSS_LN_1_TXT, ''), ',')+
COALESCE(NULLIF(ad.UDEFPROPERTYADDRESS_ADDRSS_LN_2_TXT, '') , ',')+
COALESCE(NULLIF(ad.UDEFPROPERTYADDRESS_ADDRSS_LN_3_TXT, '') , ',')+
COALESCE(NULLIF(ad.UDEFPROPERTYADDRESS_CITY_TXT, '') , ',')+
COALESCE(NULLIF(ad.UDEFPROPERTYADDRESS_ST_TXT, '') , ',')+
COALESCE(NULLIF(ad.UDEFPROPERTYADDRESS_CNTRY_TXT, '') , ',')+
COALESCE(NULLIF(ad.UDEFPROPERTYADDRESS_PSTL_CD, '') , '')
FROM ACCOUNT_DETAILS ad
This will not add any commas if null-strings
SELECT CONCAT_WS(', ', IFNULL(column1, NULL),
IFNULL(column2, NULL), IFNULL(column3, NULL),
IFNULL(column4, NULL), IFNULL(column5, NULL))
FROM yourtable
Related
How do i use the LTRIM & RTRIM with the following SQL? I need to LTRIM and RTRIM all these fields for leading spaces
UPDATE CORE.WeccoPartyAddress
SET AddressElements = CONTROL.TrimChar(
CASE when COALESCE(Address1,'') != '' THEN Address1 + ', ' ELSE '' END +
CASE when COALESCE(Address2,'') != '' THEN Address2 + ', ' ELSE '' END +
CASE when COALESCE(Address3,'') != '' THEN Address3 + ', ' ELSE '' END +
CASE when COALESCE(Town,'') != '' THEN Town + ', ' ELSE '' END +
CASE when COALESCE(County,'') != '' THEN County + ', ' ELSE '' END +
CASE when COALESCE(Postcode,'') != '' THEN Postcode ELSE '' END, ', '
)
Use like below nested:
UPDATE CORE.WeccoPartyAddress SET AddressElements = rtrim(ltrim(CASE when COALESCE(Address1,'') != '' THEN Address1 + ', ' ELSE '' END + CASE when COALESCE(Address2,'') != '' THEN Address2 + ', ' ELSE '' END + CASE when COALESCE(Address3,'') != '' THEN Address3 + ', ' ELSE '' END + CASE when COALESCE(Town,'') != '' THEN Town + ', ' ELSE '' END + CASE when COALESCE(County,'') != '' THEN County + ', ' ELSE '' END + CASE when COALESCE(Postcode,'') != '' THEN Postcode ELSE '' END))
You don't have to use CASE in your statement
UPDATE CORE.WeccoPartyAddress
SET AddressElements = ISNULL( STUFF (
COALESCE( ', ' + LTRIM( RTRIM(Address1) ) , '') +
COALESCE( ', ' + LTRIM( RTRIM(Address1Address2) ) , '') +
COALESCE( ', ' + LTRIM( RTRIM(Address1Address3) ) , '') +
COALESCE( ', ' + LTRIM( RTRIM(Address1Town) ) , '') +
COALESCE( ', ' + LTRIM( RTRIM(Address1County) ) , '') +
COALESCE( ', ' + LTRIM( RTRIM(Address1Postcode) ) , '')
,1
,2
,''
), '')
If any of Address values is not null you will get string like this: ', Address', then using the function STUFF you replace ', ' at the beginning of the string to get 'Address' as the result.
If all values are null the STUFF function will return NULL which will be replaced with '' by ISNULL function.
Hi I have a select which works great where I use CHARINDEX on a varchar column, but when I try it on a integer column I get the following error;
Argument data type int is invalid for argument 1 of charindex function.
Below I have listed both queries.
stremail is varchar
intEmployeeID in integer
**below returns results as aspected**
SELECT intEmployeeID
FROM [dbo].[tblEmployees]
WHERE CHARINDEX(',' + strEmail + ',', ',' + REPLACE('test#gmail.com, test2#gmail.com', ' ', '') + ',') > 0
**below I get an error if I'm trying to select on a integer column**
SELECT intEmployeeID
FROM [dbo].[tblEmployees]
WHERE CHARINDEX(',' + intEmployeeID + ',', ',' + REPLACE('1, 2', ' ', '') + ',') > 0
Any help would be most greatful.
SELECT intEmployeeID
FROM [dbo].[tblEmployees]
WHERE CHARINDEX(',' + cast(intEmployeeID as nvarchar(max)) + ',', ',' + REPLACE('1, 2', ' ', '') + ',') > 0
+ cast(intEmployeeID as varchar)+
Cast intEmployeeID as varchar
You have to explicitly convert the integer to a character string, otherwise it compiles the + operators as integer addition instead of string concatenation :
CHARINDEX(',' + CONVERT(VARCHAR(10),intEmployeeID) + ',', ',' + REPLACE('1, 2', ' ', '') + ',')
I can't seem to figure out how to use the opposite of isnull or ifnull statements in sql. I need to say if a.Error1 is not null -- then print the ' - ' and the + CHAR(13)+CHAR(10). Basically There should be no dash or no new line break if the a.Error1 comes back null. So print the information if the field isn't null.
select a. ....
' - ' + a.Error1 + CHAR(13)+CHAR(10) +
' - ' + a.Error2 + CHAR(13)+CHAR(10) +
' - ' + a.Error3 + CHAR(13)+CHAR(10) +
' - ' + a.Error4 + CHAR(13)+CHAR(10) +
' - ' + a.Error5 + CHAR(13)+CHAR(10) +
' - ' + a.Error6 as 'error_message'
...
from table1 a
For example if for a given record error1, 2 and 5 returned output I would like the output to be as follows:
- Error1: There was a ...
- Error2: ....
- Error5: The data was ...
If no errors existed for that row it should simply be an empty/null field.
You can use CASE:
SELECT a. ....
(CASE WHEN a.Error1 IS NOT NULL
THEN ' - ' + a.Error1 + CHAR(13)+CHAR(10)
ELSE ''
END) +
(CASE WHEN a.Error2 IS NOT NULL
THEN ' - ' + a.Error2 + CHAR(13)+CHAR(10)
ELSE ''
END) +
(CASE WHEN a.Error3 IS NOT NULL
THEN ' - ' + a.Error3 + CHAR(13)+CHAR(10)
ELSE ''
END) +
...etc
Yes! i know i'm like 5 years too late but i too enountered this problem.
It's weird how it doesn't exist some kind of !ISNULL() but whatever.
Try this for a cleaner code:
select a. ....
IIF(a.Error1 IS NOT NULL, ' - ' + a.Error1 + CHAR(13)+CHAR(10) , '') as Error1,
IIF(a.Error1 IS NOT NULL, ' - ' + a.Error1 + CHAR(13)+CHAR(10) , '') as Error2
from table1 a
Learn more about IIF() function : SQL Server IIF Function
The COALESCE function does what you want here. The result of COALESCE is the first NOT NULL value it is passed. Below we use '', which is distinct from NULL so that the outer + is always applied to NOT NULL strings.
e.g.
select a. ....
COALESCE( ' - ' + a.Error1 + CHAR(13)+CHAR(10), '' ) +
COALESCE( ' - ' + a.Error2 + CHAR(13)+CHAR(10), '' ) +
COALESCE( ' - ' + a.Error3 + CHAR(13)+CHAR(10), '' ) +
COALESCE( ' - ' + a.Error4 + CHAR(13)+CHAR(10), '' ) +
COALESCE( ' - ' + a.Error5 + CHAR(13)+CHAR(10), '' ) +
COALESCE( ' - ' + a.Error6 , '' ) as 'error_message'
...
from table1 a
SELECT (CASE WHEN a.Error1 IS NOT NULL
THEN ' - ' + a.Error1 + CHAR(13)+CHAR(10) +
ELSE a.Error1
END) +
(CASE WHEN a.Error2 IS NOT NULL
THEN ' - ' + a.Error2 + CHAR(13)+CHAR(10) +
ELSE a.Error2
END) +
.....etc
I have the following T-SQL query;
SELECT
Site.Address1 + CHAR(13) + Site.Address2 + CHAR(13) +
Site.Address3 + CHAR(13) + Site.Town + CHAR(13) +
Site.eCounty AS SiteAddress
FROM Site
If any of the Site.AddressX fields making up SiteAddress are NULL, then SiteAddress is itself NULL. I would like a Site.AddressX field and it's following new line character to be ignored if it is NULL.
I have tried adding a CASE statement for a single field and it's new line character, but have not been able to get it to work.
SELECT
(CASE WHEN (Site.Address1 IS NULL) THEN '' ELSE Site.Address1 + CHAR(10)) +
Site.Address2 + CHAR(13) +
Site.Address3 + CHAR(13) + Site.Town + CHAR(13) +
Site.eCounty AS SiteAddress
FROM Site
How might I go about doing this?
Try this:
SELECT
COALESCE([Site].Address1 + CHAR(13), '') +
COALESCE([Site].Address2 + CHAR(13), '') +
COALESCE([Site].Address3 + CHAR(13), '') +
COALESCE([Site].Town + CHAR(13), '') +
[Site].eCounty AS SiteAddress
FROM [Site]
Try this
SELECT
CASE WHEN Site.Address1 IS NULL THEN ''
ELSE Site.Address1 + CHAR(10) +
Site.Address2 + CHAR(13) +
Site.Address3 + CHAR(13) + Site.Town + CHAR(13) +
Site.eCounty END AS SiteAddress
FROM SITE Site
I need to export SQL records to outlook vcards, so 1 vcard per result row returned. Does anyone know how to do this?
Maybe something like this:
DECLARE #crlf char(2)
SET #crlf = CHAR(13) + CHAR(10)
SELECT
'BEGIN:VCARD' + #crlf
+ COALESCE ('N:' + COALESCE (Last, '') + ';'
+ COALESCE (First, '') + ';'
+ COALESCE (Mi, '') + #crlf, '')
+ COALESCE ('FN:' + FullName + #crlf, '')
+ COALESCE ('TITLE:' + Title + #crlf, '')
+ COALESCE ('ORG:' + Company + #crlf, '')
+ COALESCE ('TEL;WORK;VOICE:' + PhoneWork + #crlf, '')
+ COALESCE ('TEL;WORK;FAX:' + FaxWork + #crlf, '')
+ COALESCE ('TEL;HOME;VOICE:' + [PhoneHome] + #crlf, '')
+ COALESCE ('TEL;HOME;FAX:' + [FaxHome] + #crlf, '')
+ COALESCE ('TEL;CELL;VOICE:' + [PhoneMobile] + #crlf, '')
+ COALESCE ('TEL;PAGER;VOICE:' + [Pager] + #crlf, '')
+ 'ADR;WORK:;;' + COALESCE ([Address], '') + ';'
+ COALESCE ([City], '') + ';' + COALESCE ([State], '') + ';'
+ COALESCE ([Zip], '') + #crlf
+ COALESCE ('EMAIL;PREF;INTERNET:' + [email] + #crlf, '')
+ 'REV:' + { fn REPLACE({ fn REPLACE(
{ fn REPLACE(CONVERT(varchar, GETDATE(), 120), '-', '')
}, ':', '') }, ' ', 'T') } + 'Z'+ #crlf
+ 'END:VCARD' + #crlf AS vcard
FROM
yourTable