I have the following query:
SELECT
'' + CONVERT(VARCHAR(MAX),c.ClientId) + ','
FROM [dbo].[tblClient] c
This returns 17,000 + rows. Is there a way to make all these rows return as 1 value? For example:
6A7A24CD-061C-4653-9790-882D90F81E1D,0980722E-6E96-4498-B3BB-BFB4CA60EAC6,etc etc etc.
I am trying to use this as a parameter for testing.
does this work for you?
DECLARE #v VARCHAR(MAX)
SELECT #v = ''
SELECT
#v = #v + CONVERT(VARCHAR(MAX),c.ClientId) + ','
FROM [dbo].[tblClient] c
WHERE c.ClientId IS NOT NULL
SELECT #v
Note: Just be aware that if you add an ORDER BY that it is not guaranteed to sort it, in that case use xml path as shown in Remus' answer
See also: Concatenate Values From Multiple Rows Into One Column Ordered
The article covers a number of techniques at your disposal: Concatenating Row Values in Transact-SQL. My favorite technique is the black-box XML method:
SELECT cast(c.ClientId as varchar(20)) + ','
FROM [dbo].[tblClient] c
for xml path(''), type;
Related
I have some rates for resources for all countries
The rows will be Resource IDs
Columns should be Country Codes
Challenge here, I cannot sort the Country Codes in ASC
It would be so grateful if you could help me on this.
When I query, I get the list of country codes, but not sorted. i.e., USA,BRA,ARG etc. But the expected result should be ARG,BRA,USA in columns of the pivot.
Here is my code:
DECLARE #idList nvarchar(MAX)
SELECT
#idList = COALESCE(#idList + ',', '') + CountryCodeISO3
FROM
(
SELECT
DISTINCT CountryCodeISO3
FROM
Published.RateCardsValues
WHERE
CardID = 55
) AS SRC
DECLARE #sqlToRun nvarchar(MAX)
SET
#sqlToRun = '
SELECT *
FROM (
SELECT
[ResourceCode]
,[TITLES]
,[MostRepresentativeTitle]
,[ABBR_RES_DESC]
,[TypicalJobGrade]
,[BidGridResourceCode]
,[OpUnit]
,[PSResType]
,[JobGradeORResCat]
,[CountryCodeISO3]
--,[CurrencyCode]
,[RateValue]
FROM
[Published].[RateCardsValues] rc
WHERE
CardID = 55) As src
PIVOT (
MAX(RateValue) FOR [CountryCodeISO3] IN (' + #idList + ')
) AS pvt'
EXEC (#sqlToRun)
As you have discovered, PIVOT in T-SQL requires you to know at development time what the values will be that you will be pivoting on.
This is limiting, because if you want something like "retrieve data for all the countries where Condition X is true, then pivot on their IDs!", you have to resort to dynamic SQL to do it.
If Condition X is constant -- I'm guessing that belonging to CardID = 55 doesn't change often -- you can look up the values, and hardcode them in your code.
If the CardID you're looking up is always 55 and you have relatively few countries in that category, I'd actually advise doing that.
But if your conditions for picking countries can change, or the number of columns you want can vary -- something like "all the countries where there were sales of product Y, for month Z!" -- then you can't predict them, which means that the T-SQL PIVOT can't be set up (without dynamic SQL.)
In that case, I'd strongly suggest that you have whatever app you plan to use the data in do the pivoting, not T-SQL. (SSRS and Excel can both do it themselves, and code can be written to do it in .NET langauges.) T-SQL, as you have seen, does not lend itself to dynamic pivoting.
What you have will "work" in the sense that it will execute without errors, but there's another downside, in the next stage of your app: not only will the number of columns potentially change over time, the names of the columns will change, as countries move in and out of Card ID 55. That may cause problems for whatever app or destination you have in mind for this data.
So, my two suggestions would be: either hard-code your country codes, or have the next stage in your app (whatever executes the query) do the actual pivoting.
You need to sort the columns while creating the dynamic SQL
Also:
Do not use variable coalescing, use STRING_AGG or FOR XML instead
Use QUOTENAME to escape the column names
sp_executesql allows you to pass parameters to the dynamic query
DECLARE #idList nvarchar(MAX)
SELECT
#idList = STRING_AGG(QUOTENAME(CountryCodeISO3), ',') WITHIN GROUP (ORDER BY CountryCodeISO3)
FROM
(
SELECT
DISTINCT CountryCodeISO3
FROM
Published.RateCardsValues
WHERE
CardID = 55
) AS SRC;
DECLARE #sqlToRun nvarchar(MAX);
SET
#sqlToRun = '
SELECT *
FROM (
SELECT
[ResourceCode]
,[TITLES]
,[MostRepresentativeTitle]
,[ABBR_RES_DESC]
,[TypicalJobGrade]
,[BidGridResourceCode]
,[OpUnit]
,[PSResType]
,[JobGradeORResCat]
,[CountryCodeISO3]
--,[CurrencyCode]
,[RateValue]
FROM
[Published].[RateCardsValues] rc
WHERE
CardID = 55) As src
PIVOT (
MAX(RateValue) FOR [CountryCodeISO3] IN (' + #idList + ')
) AS pvt'
EXEC sp_executesql #sqlToRun;
On earlier versions of SQL Server, you cannot use STRING_AGG. You need to hack it with FOR XML. You need to also use STUFF to strip off the first separator.
DECLARE #idList nvarchar(MAX)
DECLARE #separator nvarchar(20) = ',';
SET #idList =
STUFF(
(
SELECT
#sep + QUOTENAME(CountryCodeISO3)
FROM
Published.RateCardsValues
WHERE
CardID = 55
GROUP BY
CountryCodeISO3
ORDER BY
CountryCodeISO3
FOR XML PATH(''), TYPE
).value('text()[1]','nvarchar(max)'),
1, LEN(#separator), '')
;
DECLARE #sqlToRun nvarchar(MAX);
SET
#sqlToRun = '
SELECT *
FROM (
SELECT
[ResourceCode]
,[TITLES]
,[MostRepresentativeTitle]
,[ABBR_RES_DESC]
,[TypicalJobGrade]
,[BidGridResourceCode]
,[OpUnit]
,[PSResType]
,[JobGradeORResCat]
,[CountryCodeISO3]
--,[CurrencyCode]
,[RateValue]
FROM
[Published].[RateCardsValues] rc
WHERE
CardID = 55) As src
PIVOT (
MAX(RateValue) FOR [CountryCodeISO3] IN (' + #idList + ')
) AS pvt'
EXEC sp_executesql #sqlToRun;
If i pass #count variable i am getting this error
Below is my query
DECLARE #Error_Description NVARCHAR(Max)
DECLARE #Count VARCHAR(20)
DECLARE #x NVARCHAR(Max)
SELECT #Error_Description = 'The external columns for Excel Source are out of synchronization with the data source columns.
The column "szReferencceNumber" needs to be added to the external columns.
The column "SMSa" needs to be added to the external columns.
The column "as" needs to be added to the external columns.'
SELECT #Count = (LEN(#Error_Description) - LEN(REPLACE(#Error_Description, '"', ''))) / LEN('"')
SELECT #Count
SELECT COALESCE(LTRIM(CAST(('<X>' + REPLACE(#Error_Description, '"', '</X><X>') + '</X>') AS XML).value('(/X)[' + #Count + ']', 'varchar(128)')), '')
The first parameter to value must be a string literal. To select the nodes with a dynamic index you can do the following
SELECT
n.value('.', 'varchar(128)') as Result
from (SELECT CAST(('<X>' + REPLACE(#Error_Description, '"', '</X><X>') + '</X>') AS XML)) ca(x)
CROSS APPLY x.nodes('(/X)') n(n)
WHERE n.value('for $l in . return count(../*[. << $l]) + 1', 'int') %2 = 0
This returns the value for every second node. So achieves your desired results of getting the values enclosed in quotes.
Result
---------------------
szReferencceNumber
SMSa
as
if you're using 2012+, and you can use nvarchar(4000) (not MAX), you could get a copy of DelimitedSplitN4K_LEAD and grab rows where the value of ItemNumber is even:
DECLARE #Error_Description nvarchar(4000);
SELECT #Error_Description = N'The external columns for Excel Source are out of synchronization with the data source columns.
The column "szReferencceNumber" needs to be added to the external columns.
The column "SMSa" needs to be added to the external columns.
The column "as" needs to be added to the external columns.';
SELECT DS.Item
FROM dbo.DelimitedSplitN4K_LEAD(#Error_Description,'"') DS
WHERE DS.ItemNumber % 2 = 0;
If you're on SQL server 2016+, then you could use some JSON manipulation (which supports MAX values):
SELECT OJ.value
FROM (VALUES(#Error_Description))V(Error_Description)
CROSS APPLY (VALUES('["' + REPLACE(REPLACE(REPLACE(V.Error_Description,'"','","'),NCHAR(13),''),NCHAR(10),'')+ '"]'))R(JSON)
CROSS APPLY OPENJSON(R.JSON) OJ
WHERE OJ.[Key] % 2 = 1;
You can use your #Count within the XQuery predicate, but not via concatenation. There is sql:variable():
TheXml.value('(/X)[sql:variable("#Count") cast as xs:int?][1]', 'varchar(128)')
It would help to declare the variable #Count as INT in order to avoid the XQuery cast.
Hint: You need the final [1] to enforce the singleton .value() demands for.
this is all based on the #Shnugo answer above, thanks a lot Shnugo
I have a long script saved in to a temp table
select * from #Radhe
I want to print the whole script.
DECLARE #SQL NVARCHAR(MAX)
DECLARE #XML3 XML
--load the script to XML
SELECT #XML3 = (SELECT #Radhe.Item AS x FROM #Radhe FOR XML PATH(''))
--print line by line
declare #i int = 1
select #sql = 'radhe'
while #sql is not null
begin
SELECT #sql = #xml3.value('(/x/text())[sql:variable("#i")
cast as xs:int?][1]', 'varchar(max)')
print #sql
select #i = #i + 1
if #i > 10000 --limit it to 10000 lines
set #sql = null
end
and it works.
It took me a long time to get this done.
Hope I can help a fellow DBA or developer.
I have two columns in a table. I want to merge them into a single column, but the merge should be done taking alternate characters from each columns.
For example:
Column A --> value (1,2,3)
Column B --> value (A,B,C)
Required result - (1,A,2,B,3,C)
It should be done without loops.
You need to make use of the UNION and get a little creative with how you choose to alternate. My solution ended up looking like this.
SELECT ColumnA
FROM Table
WHERE ColumnA%2=1
UNION
SELECT ColumnB
FROM TABLE
WHERE ColumnA%2=0
If you have an ID/PK column that could just as easily be used, I just didn't want to assume anything about your table.
EDIT:
If your table contains duplicates that you wish to keep, use UNION ALL instead of UNION
Try This;
SELECT [value]
FROM [Table]
UNPIVOT
(
[value] FOR [Column] IN ([Column_A], [Column_B])
) UNPVT
If you have SQL 2016 or higher you can use:
SELECT QUOTENAME(STRING_AGG (cast(a as varchar(1)) + ',' + b, ','), '()')
FROM test;
In older versions, depending on how much data you have in your tables you can also try:
SELECT QUOTENAME(STUFF(
(SELECT ',' + cast(a as varchar(1)) + ',' + b
FROM test
FOR XML PATH('')), 1, 1,''), '()')
Here you can try a sample
http://sqlfiddle.com/#!18/6c9af/5
with data as (
select *, row_number() over order by colA) as rn
from t
)
select rn,
case rn % 2 when 1 then colA else colB end as alternating
from data;
The following SQL uses undocumented aggregate concatenation technique. This is described in Inside Microsoft SQL Server 2008 T-SQL Programming on page 33.
declare #x varchar(max) = '';
declare #t table (a varchar(10), b varchar(10));
insert into #t values (1,'A'), (2,'B'),(3,'C');
select #x = #x + a + ',' + b + ','
from #t;
select '(' + LEFT(#x, LEN(#x) - 1) + ')';
As the title states, I need help in converting a single row of data E.g,
col1 col2 col3 <-- This are column names
value1 value2 value3
To something like
dataResult <-- this is the column name from running the procedure or call
value1,value2,value3
The requirements are that this call ( or rather procedure) needs to be able to accept the results of sql queries of any column length and is able to convert that row to a comma delimited string format. Been stuck at this for weeks any help would be greatly appreciated...
EDIT*
Assume the unique key is the first column. Also assume that only 1 row will be returned with each query. Multiple rows will never occur.
The idea is to convert that row to a comma separated string without having to select the column names manually (in a sense automatically convert the query results)
You might try it like this:
A declared table variable to mock-up as test table. Be aware of the NULL value in col2!
DECLARE #tbl TABLE(col1 VARCHAR(100),col2 VARCHAR(100),col3 VARCHAR(100));
INSERT INTO #tbl VALUES('test1',NULL,'test3');
--This is the query:
SELECT
STUFF(
(
SELECT ',' + elmt.value('.','nvarchar(max)')
FROM
(
SELECT
(
/*YOUR QUERY HERE*/
SELECT TOP 1 *
FROM #tbl
/*--------------------*/
FOR XML AUTO ,ELEMENTS XSINIL,TYPE
)
) AS A(t)
CROSS APPLY t.nodes('/*/*') AS B(elmt)
FOR XML PATH('')
),1,1,'')
FOR XML AUTO will return each row as XML with all the values within attributes. But this would omit NULL values. Your returned string would not inlcude the full count of values in this case. Stating ELEMENT XSINIL forces the engine to include NULL values into the XML. This CROSS APPLY t.nodes('/*/*') will return all the elements as derived table and the rest is re-conactenation.
See the double comma in the middle! This is the NULL value of col2
test1,,test3
ATTENTION: You must be aware, that the whole approach will break, if there is a comma part of a (string) column...
Hint
Better was a solution with XML or JSON. Comma separated values are outdated...
Applay the next Approach:-
Use For Xml to sperate comma,
Get Columns Names Via using INFORMATION_SCHEMA.COLUMNS.
According to your need, select TOP (1) for getting First
Row.
Demo:-
Create database MyTestDB
go
Use MyTestDB
go
Create table Table1 ( col1 varchar(10), col2 varchar(10),col3 varchar(10))
go
insert into Table1 values ('Value1','Value2','Value3')
insert into Table1 values ('Value11','Value12','Value13')
insert into Table1 values ('Value21','Value22','Value23')
go
Declare #Values nVarchar(400),
#TableName nvarchar (100),
#Query nvarchar(max)
Set #TableName = 'Table1'
Select #Values = Stuff(
(
Select '+'','' + ' + C.COLUMN_NAME
From INFORMATION_SCHEMA.COLUMNS As C
Where C.TABLE_SCHEMA = T.TABLE_SCHEMA
And C.TABLE_NAME = T.TABLE_NAME
Order By C.ORDINAL_POSITION
For Xml Path('')
), 1, 2, '')
From INFORMATION_SCHEMA.TABLES As T
where TABLE_NAME = #TableName
select #Values = right(#Values,len(#Values)-4)
select #Query = 'select top(1)' + #Values + ' from ' + #TableName
exec sp_executeSQL #Query
Result:-
I have a problem and can't solve it. Furthermore I can't find an answer anywhere in the internet.
Simplified I have a big table with coloumns, where values to products with an ID are stored by year:
year
id
value
In my stored procedure the attributes for getting information are:
#year
#id
If you want to get information about more than one product, you can use a comma-seperated list of product-ids like ('654654,543543,987987').
My TSQL should be like this:
select year,
sum(case when id = #id[1] then value),
sum(case when id = #id[2] then value),
[...]
from table myTable
where year = #year
group by year
order by year
What I want to do is iterate throught the comma-seperated ids and for each id, I want to add a new select attribut like this (sum(case when id = #id[x] then value).
Can you help me with this problems? Any suggestions to solve it?!
Thanks for your help!
PIVOT operation could simplify the query.
But, anyway, it seems that the only way to construct such a query is to use dynamic SQL.
DECLARE
#Ids NVARCHAR(MAX),
#stmt NVARCHAR(MAX)
SET #Ids = '1,2'
-- Transform Ids into the format PIVOT understands - with square brackets.
-- Primitive way, to not overcomplicate sample.
SET #Ids = '[' + REPLACE(#Ids, ',', '], [') + ']'
PRINT #Ids -- [1], [2]
SET #Stmt = '
SELECT *
FROM Products as p
PIVOT
(
SUM(p.Value)
FOR p.Id IN (' + #Ids + ')
) AS t
ORDER BY Year'
EXEC sp_executesql #Stmt
If you need more accurate way of splitting a comma separated list into an array (table), please see this article for details.
This example is available on SQL Fiddle
As you are using stored procedure, you can use sp_executesql to executed dynimically build SQL statement.
So, you have to iterate over the CSV like this:
DECLARE #List NVARCHAR(MAX) = N'1001,dada,1002,1003'
DECLARE #ProductsID TABLE ( [ID] BIGINT )
DECLARE #XML xml = N'<r><![CDATA[' + REPLACE(#List, ',', ']]></r><r><![CDATA[') + ']]></r>'
INSERT INTO #ProductsID ([ID])
SELECT DISTINCT CAST(Tbl.Col.value('.', 'float') AS bigint)
FROM #xml.nodes('//r') Tbl(Col)
WHERE ISNUMERIC(Tbl.Col.value('.', 'varchar(max)')) = 1
SELECT [ID] FROM #ProductsID
Then, having a table with the ID to dynamically build you SQL statement and execute it.