Concat function or equivalent for CDS view?

Trying to create a CDS view and looking to combine multiple character fields (e.g. first_name + last_name) and am wondering if this is possible? Am on CRM NW 7.4 SP5 on HANA.
Using the arithmetic function gives me the following.
Data type CHAR is currently not supported in an arithmetic expression
Looking at the official documentation here, it doesn't appear to be included?
ABAP Keyword Documentation
I can always create a AMDP or even a HANA native view, just wondering if anyone has come across the same issue and found a solution within CDS view?
Thanks in advance,
Sean.

Hi Sean,
there's no concatenate function as of 7.4 SP5.
A workaround in OpenSQL (if that's the combination you use), you could use the columns of your choice in the projection list like (I use literals in the example for simplicity):
'a' as a,
'b' as b
and concatenate later by means of OpenSQL:
select a && b from <cds_view> into ….
However, if you want to use the view in an ALV this does not help you, I know…
Cheers,
Jasmin

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Exists in CDS view

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Dear Expert,
Kindly please let me know if we can use the HANA SQL Function (Ex: ADD_DAYS, SECONDS_BETWEEN) in the select list of CDS Views?
If I create a CDS like below I get error that timestamp is not supported.
For Example:
@AbapCatalog.sqlViewName: 'ZMR_H_CA'
@EndUserText.label: 'CAG A'
define view viewname
with parameters start_ts:abap.dec( 15, 0 ) , end_ts:abap.dec( 15, 0 )
as select from table {
key resource_key,
TO_TIMESTAMP(begtstmp) as start_tmp,
TO_TIMESTAMP(begtstmp) as end_tmp
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(begtstmp > $parameters.start_ts or endtstmp > $parameters.start_ts )
and
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Thanks,
Giri

Hi Giri,
the list of provided features can be found in the ABAP Language Documentation (F1 in the CDS View).
As CDS in ABAP is abstracted from the database layer, the database features are not directly accessible. That means, you cannot use any HANA or MaxDB feature available. So the answer to your question is no. The reason for this is, that ABAP CDS views can be created on all SAP-supported databases, hence, we can only provide those features, supported by all databases.
Having said this, there are some exception, e.g. the CDS views with input parameters, which are not supported by all databases. In these cases, you'd have to additionally use the utility class CL_ABAP_DBFEATURES (see http://scn.sap.com/community/abap/blog/2014/10/10/abap-news-for-740-sp08--abap-core-data-services-cds) for more details.
Best,
Jasmin

Not able to use CONCAT in CDS View

Hello,
My requirement is to prepare a field by concatenating 'PR' in front of the field and use it in a CDS view.
I am getting the below error while doing it.
Is the issue with my HANA version or the code is wrong.

Dear Abhishek,
which Version of the ABAP stack do you have?
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Best Regards, Thomas

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To calculate the number of days between january 1st and today, use the following.
1* select trunc(sysdate) - trunc(to_date('01-jan-05')) from dual
SQL> /
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Material creation for All VIEW using BAPI Function modules

Dear All,
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ORA-01732: what functions are allowed for view creation?

Hi,
i try to create a view, where i can delete rows. Here my view
CREATE OR REPLACE VIEW myview as select * from (select * from orders order by starttime) where rownum < 4
If i try to delete a row i get:
SQL Error: ORA-01732: Datenmanipulationsoperation auf dieser View nicht zulässig
(translation: data manipulation for this view not allowed)
Breaks the rownum the view? I tested it with rank() over and this breaks it too...

sql>
CREATE OR REPLACE VIEW myview
as
select * from (select * from emp order by hiredate) where rownum<4;
View created
sql>
create or replace trigger trig1
instead of delete
on myview
for each row
begin
delete from emp
where empno = :old.empno;
end;
Trigger created.
sql>select * from myview;
EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO
7499 ALLEN SALESMAN 7698 20-FEB-81 1600 300 30
7521 WARD SALESMAN 7698 22-FEB-81 1250 500 30
7566 JONES MANAGER 7839 02-APR-81 2975     20
sql>
delete from myview
where rownum=1;
1 row deleted.
sql>select * from myview;
EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO
7521 WARD SALESMAN 7698 22-FEB-81 1250 500 30
7566 JONES MANAGER 7839 02-APR-81 2975     20
7698 BLAKE MANAGER 7839 01-MAY-81 2850     30
Message was edited by:
        jeneesh

Questions on CDS Views with input parameters

Dear Experts,
1. Can we call a CDS View (or generated database view) with input parameters inside an AMDP? I am looking for something similar to the feature in HANA where we can consume calculation view with filters inside SQL Script?
2. I understand we can next CDS Views, but how we can next (call) a CDS View with input parameters inside another CDS View?
Thanks,
Giri

Hi Thomas,
I get the below error that the CDS View's generated table function cannot take field from AMDP.
I have a requirement to query the CDS View using 2 timestamps (start & end). So, in AMDP I have used the TIME_STAMP and try to pass it to the CDS View
View code:
define view Z_Ngi_Cag_A
with parameters start_ts:abap.dec( 15, 0 ) , end_ts:abap.dec( 15, 0 )
as select from table {
resource_key
where
(begtstmp > $parameters.start_ts or endtstmp > $parameters.start_ts )
and
(begtstmp < $parameters.end_ts or endtstmp < $parameters.end_ts )
I am calling using the below AMDP:
DECLARE iv_start_date TIMESTAMP;
DECLARE iv_end_date TIMESTAMP;
SELECT CURRENT_TIMESTAMP INTO iv_start_date from dummy;
SELECT ADD_DAYS(CURRENT_TIMESTAMP, 30) INTO iv_end_date from dummy;
et_data = SELECT * FROM ZMR_H_CA ( start_ts => iv_start_date, end_ts => iv_end_date );
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Giri

Equivalent of Materialized Views in SQL Server

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we are migrating Oracle Database to SQL Server 2012 and is looking for solution, equivalent to Materialized Views in Oracle.
we had tried to implement indexed View, but that was not possible, because the MVs have outer joins, subqueries, aggregate functions and also there is no column in it which can act as a Primary Key.
Please Help to get a solution for this issue.
Regards
Joyasree Mondal

>use tempdb
>drop table t
>go
>create table t(id int, constraint pk_t primary key (id))
>
>go
>insert into t(id)
>select top 1000 cast( cast( newid() as binary(4) ) as int)
>from sys.objects o, sys.columns c
>go 100
>
>
>select id
>from t with (index=pk_t, tablockx)
>
>
>select id
>from t with (index=pk_t, nolock)
Still the same order.
>> No, its always in the key order like I've shown here.
> You are extrapolating from a single example.
Actually, this information doesn't even come from my exampleS (there were quite a few so far). Its written in the article you posted here. My examples are meant to confirm that and explain why the ORDER BY clause is redundant in some cases.
> I have. ORDER BY in a view used to always return ordered results. Then it didn't.
Examples? References?
>GROUP BY without an ORDER BY used to always return ordered results. Then it didn't. Many queries have >change the result ordering when you get a parallel plan.
Now you finally admit ordered results would always be returned, even without an order by clause. We are in the right track it appears. The reason for this change of behavior is a variation in the logical operator used by the query optimizer, and not the
way the engine reads pages from disk.
In the beginning of times there was stream aggregate, an operator that would require its input to be sorted. And this is how a GROUP BY clause would ensure results were always ordered.
But then his ugly cousin came and messed things up. He doesnt need an ordered input so yeah, order would be random. AGAIN, there are still ways of enforcing order here, through query hints, without requiring an order by clause, so this changes nothing.
You have confirmed that for a given operator, results will always be ordered. Your own argument has, once again, proven my point.
> Right. But there are different _kinds_ of scans. An ordered scan, where SQL Server reads rows based on the logical order of the index is just one kind.
It only won't scan in key order (by scheduling reads) if you change the transaction isolation level and hope for the worse. Because the key order scan is the best performing way of reading pages, this behavior (although possible) wasan't even observed in
the example with NOLOCK/TABLOCK (known to cause allocation-order scans in larger tables) you posted above.
> Other kinds include the parallel scan, the reverse scan,
References?
> the merry-go-round scan,
Only applies to table scans, not indexes.
http://technet.microsoft.com/en-us/library/ms191475%28v=SQL.105%29.aspx
> And the allocation-order (or unordered) scan.
Only if you specify TABLOCK or NOLOCK query hints, which I haven't done. This is something that goes without saying, it's irrelevant to an indexed view scenario such as this one.
Some people have also said it will perform an allocation-order scan if the index is too fragmented in SQL Server 2005, but as of 2012 it (probably) won't, as I have shown here. There is also no document anywhere in the internet (you are free to search for
it), that would point us otherwise. If you have access to additional information, I would be more than happy if you could share it with us.
Reference: http://sqlmag.com/database-development/quaere-verum-clustered-index-scans-part-iii
> And don't take my word for it. Take Conor Cunningham's:
>If you need order in your query results, put in an ORDER BY. It's that simple. Anything else is like >riding in a car without a seatbelt.
>No Seatbelt - Expecting Order without ORDER BY
Again, with all due respect, did you read your own article? Did you read what I said earlier about having multiple I/O threads as a whole other situation? If you add new variables, OF COURSE the results will be different. Parallelism was disabled in the
server I performed these tests on, but still you can control this by query hints, and you can enforce execution plans by using plan gudes.
Its like I always say - it's always about the 0.001% of situations, the exceptions, rather than the general rule.
Tell Mr Connor to add MAXDOP 1 to his querys OPTION clause and see if results are still unordered lol
References:
http://msdn.microsoft.com/en-us/library/ms190417.aspx
http://msdn.microsoft.com/en-us/library/ms181714.aspx
http://technet.microsoft.com/en-us/library/ms188611%28v=sql.105%29.aspx
http://blogs.msdn.com/b/conor_cunningham_msft/archive/2008/08/27/no-seatbelt-expecting-order-without-order-by.aspx
Imagining uncontrollable factors that would get an ordered input to be retrieved in an unordered manner is one of SQL Server's myths. There are a whole other people around who think the same way because of some experiences they had when they didn't know
how to control the execution plan, and adding an order by clause is a very popular and easy shortcut to a complex problem. "In the worst cases it will just be redundant", they say. What they like to forget is that sorting has an often high cost,
and it can be avoided by taking advantage of indexes.

Is there a logic:match equivalent for JSTL?

In a search page I execute a query which returns an array of objects (All objects are of the same object type and are cast to Object[]) and each object has many attributes. I tried using <logic:iterate>, but I was never successful in having it display any results. I believe this had something to do with the entire array being passed via session scope instead of just one record and me not specifying it properly with <logic:iterate>. I was able to successfully use <c:forEach> and it worked right away. I stuck with using that because of its "just works" ability in addition to using a lot of other JSTL code. However, one of the attributes that is being printed out needs to be parsed and is of the form "Yxxx". <logic:match> covers this very nicely, but when I specify it in the below code it is not able to find my variable in any scope.
<c:forEach var="myResults" items="${sessionScope.result}" varStatus="status">
    <logic:match parameter='${myResults}' property='pin' value='Y'>
        <c:out value="Preeti"/>
    </logic:match>
</c:forEach>I have done several google searches, but I haven't found a JSTL equivalent for <logic:match>. If there is one could someone please tell me what it is? In addition, although <logic:match> is great I still need to print out a substring of that attribute. Could someone tell me how to do that? If this is not possible could someone please tell me if its possible to use <logic:iterate> with an array of objects like I was attempting to do initially so that I could use <logic:match> at least?
Thanks to all of you for your time.

Yes you can use the logic:iterate tag. I think you have to specify the type of the exposed variable though. I prefer the forEach loop.
I think you are using the wrong attribute in the logic:match tag. You should be using the "name" attribute rather than "parameter"
Parameter attribute refers you to a request parameter, and I pretty sure you don't want that.
So given the collection of objects in the session attribute "result"
This should loop through them all, and see if they start with the letter 'Y'
<c:forEach var="myResults" items="${sessionScope.result}" varStatus="status">
    <logic:match name='myResults' property='pin' value='Y'>
        <c:out value="Preeti"/>
    </logic:match>
</c:forEach>As for the latter bit, are you using a JSP2 container and JSTL1.1? It would appear so seeing as you are trying to use EL expressions in the logic:match tag.
If so, you could make use of the JSTL function library:
<c:forEach var="myResults" items="${sessionScope.result}" varStatus="status">
   <c:if test='${fn:startsWith(myResults.pin, "Y")}'>
      <c:out value="${fn:substring(myResults.pin, 1, -1)}"/>
    </c:if>
</c:forEach>And I've just spotted a very cool function in there: substringAfter
<c:forEach var="myResults" items="${sessionScope.result}" varStatus="status">
      <c:out value='${fn:substringAfter(myResults.pin, 'Y')}'/>
</c:forEach>Cheers,
evnafets

How to use Special Characters in CONCAT function or another form with Xquer

Hello everyone
I'm using PS3 OEPE within message flow (proxy)and I'm using Xquery.
I'm using the CONCAT function, but this does not allow me to concatenate special characters not allowed, for example:
I want to concatenate these strings:
String1 = “&lt;get-person&gt;&lt;id-person&;gt;”
String2 = “123”
String3 = “&lt;/id-person&;gt; &lt;/get-person&gt;”
I want to represent characters regex. It means no XML characters
Someone knows some way, any function that allows me to concatenate in OSB these values with Xquery?
Edited by: chromosoma on Sep 5, 2012 5:59 PM

Hi,
It seems to me you're doing things in the most complicated way possible...
Firstly, you should use codepoints-to-string not the reverse... Secondly, the function work with decimals, not hexa
http://www.xqueryfunctions.com/xq/fn_codepoints-to-string.html
http://www.xqueryfunctions.com/xq/fn_string-to-codepoints.html
This works...
concat(codepoints-to-string(38),'lt',codepoints-to-string(59),'get-person')But this also works... Note that I've inserted a space between the & and the lt so the forum formatting can show it...
let
$String1 := "& lt;get-person& gt;& lt;id-person& gt;",
$String2 := "123",
$String3 := "& lt;/id-person& gt;& lt;/get-person& gt;"
return
concat($String1,$String2,$String3)And, finally this also works... So what's the reason for escaping < and > with &lt and &gt; and why codepoints?
let
$String1 := "<get-person><id-person>",
$String2 := "123",
$String3 := "</id-person></get-person>"
return
concat($String1,$String2,$String3)Cheers,
Vlad

SQL Concat function seem not to work properly in SQL query data model. BIP 11g

I try to use this function to show entire name CONCAT(name, ' ', surname) and it doesnt show the surname. it looks like it only tooks 2 arguments. I use it with the option "Add element by expression" within a SQL Query - Data set.
Lucia

i don't believe you
please post more info, may be screen or sql or some more useful statement
CONCAT(name, ' ', surname) and it doesnt show the surname
may be because for some case "surname" is empty or may be you incorrect use concat function
one way mentioned by BluShadow is " || " operator - http://docs.oracle.com/cd/B28359_01/server.111/b28286/operators003.htm#SQLRF51156
and another is concat function http://docs.oracle.com/cd/B28359_01/server.111/b28286/functions026.htm#SQLRF00619
so for your case it can be like
CONCAT(CONCAT(name, ' '), surname)

When we will go for TABLE, VIEW

Hi Experts,
I have doubt regarding Generic DS . If Standard DS are not match with the Business Requirement , then we will create Generic DS.
But iam asking What is the Exact Requirement to go for Generic DS in SD and MM. At what instance Standard DS are not match with the requirement in SD and MM Applications.
When we will go for TABLE, VIEW, FUNCTION MODULE, INFOSET
in realtime, What is Exact Requirement to go with these .
Plz provide Solutions ASAP.
I will allocate points to those who help me in detail. My advance thanks who respond to my query.

Hi,
as this is one of those questions already asked a lot of times I would strongly suggest to use the search functionality in the forums ASAP.
regards
Siggi

Concat function or equivalent for CDS view?

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