WebDynpro TABLE accessibility
Hi,
It seems the accessibility feature of a WD Table is not really ok.
When I TAB onto the table it reads the whole table with its row values, this is okay.
Now when I enter into that table and press TAB to navigate between the cells then rows, first it reads all header cells, this is also okay.
Now come the cells. The cells which has a textView inside it, the screen reader just says 'Cell'. Neither its content value nor its header text are read. This is not the case when the cell contains an image, then both the cell header text and the tooltip of the image is read. In case of textView, it has a tooltip, the header label also has a tooltip and the column itself has an accessibilityDescription filled. The screen reader does no read it however, just says 'Cell'.
What may be the problem?
Thanks
Chopin
Hi Chopin,
I see mention in SAP's documentation for TextView Properties,
"a TextView with design=GroupTitle cannot be read by the screen reader"
So it sounds like there are some known limitations for a TextView with screen readers. Your scenario may be worth reporting to SAP in a customer message since it does sound like a bug if other UI elements with the same properties are read.
In the meantime, I can suggest a workaround. If the screen reader reads InputFields properly, instead of using a TextView in the table cell, you could instead use a readOnly InputField.
Cheers,
Amy
Similar Messages
-
hi experts,
How to Store and fetch the data from oracle BD and after fetching i want to display that result in webdynpro table and storing is also from webdynpro view interface.
can anybody help me on end to end procdure how can i achive.
Advance Thank you,
vijaiHi vijay,
<b> using EJB and connect with oracle.</b>
the step by step procedure is follow how to connect with oracle
1) Open the J2EE perspective
2) Create an EJB Module project
3) Right click on ejbModule, create a new EJB (select your EJB type)
4) While creating the ejb itself, you can add business methods by clicking Next in the UI. Another option is after creating the ejb, write the method in the bean, then select the method from ejb-jar.xml -> <bean name> ->method. Right click and select propogate to local & remote.
5) Double click on ejb-j2ee-engine.xml. select your bean and specify a Jndi name for eg: MyJndi.
6) Right click on the EJB project and add classes12.zip file (provided by Oracle) to its build path. (under libraries tab). Also check the same file under Order & Export.
7) Create an Enterprise Application project.
8) Right click on the EJB module project and select add to EAR project, then select the created EAR project.
9) Right click on the EJB project, select Build EJB Archive
10) Right click on the EAR project, select Build Application Archive
11) Open the WebDynpro perspective, open a new project, right click on the project ->properties. Do the following configurations :-
Java Build path - select the EJB project from projects , check the selected project under Order & Export
Project references select the EAR project
WebDynpro references select sharing references tab, click add & make an entry as : <vendor>/<EAR project name without .ear extension>
You can find the vendor name under application-j2ee-engine.xml file of the EAR project. By default it is sap.com. So if my EAR projects name is ABC, my entry would look like sap.com/ABC
12) Now the configurations are over and the EJB can be invoked by writing the client code inside the webdynpro component. Like:
InitialContext context = new InitialContext();
Object obj = context.lookup("MyJndi");
MyEJBHome home = MyEJBHome)PortableRemoteObject.narrow(obj,MyEJBHome.class);
MyEJB mybean = home.create();
int a = 0;
a= mybean.add(10,15);
wdContext.currentContextElement().setSum(a);
where MyEJB is my EJB name and MyJndi is my JNDI name
To connect to Oracle , you can write the usual Java code (given below) as a business methos of the ejb (similar to add() method in the example). And access it like mybean.<businessMethodName>().
DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@Oracle_server_ip:Oracle port:SID of the Database","user_name","password");
Statement stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery("your query");
i hope that the above steps are useful for u.
Regards,
P.Manivannan. -
INDEX UNIQUE SCAN instead of INDEX FULL SCAN or TABLE ACCESS FULL
I have calculated statistics in all tables and indexes
I have a table and a view and when I put it
SELECT *
FROM TABLE_A A
INNER JOIN VIEW_B B ON A.KEY_ID = B.PFK_KEY_ID
WHERE (B.FK_ID_XXX = 1)
If I see the execution plan:
In TABLE_A make a
TABLE ACCESS BY INDEX ROWID
INDEX UNIQUE SCAN (FIELD_A_TABLE_A_PK)
Itâs OK. I NEED IT (INDEX UNIQUE SCAN)
But If I put
SELECT A.Field_1, A.Field_2, A.Field_3, A.Field_4
FROM TABLE_A A
INNER JOIN VIEW_B B ON A.KEY_ID = B.PFK_KEY_ID
WHERE (B.FK_ID_XXX = 1)
In table A make a TABLE ACCESS FULL.
Then If I put:
SELECT /*+ INDEX(A FIELD_A_TABLE_A_PK) */ A.Field_1, A.Field_2, A.Field_3, A.Field_4
FROM TABLE_A A
INNER JOIN VIEW_B B ON A.KEY_ID = B.PFK_KEY_ID
WHERE (B.FK_ID_XXX = 1)
If I see the execution plan:
In TABLE_A make a
TABLE ACCESS BY INDEX ROWID
INDEX UNIQUE SCAN (FIELD_A_TABLE_A_PK)
Itâs OK. I NEED IT (INDEX UNIQUE SCAN)
Finally, If I put other tables and views in the query (I NEED IT)
For example:
SELECT /*+ INDEX(A FIELD_A_TABLE_A_PK) */ A.Field_1, A.Field_2, A.Field_3, A.Field_4
FROM TABLE_A A
INNER JOIN VIEW_B B ON A.KEY_ID = B.PFK_KEY_ID
INNER JOIN TABLE_Câ¦.
LEFT JOIN VIEW_Dâ¦.
WHERE (B.FK_ID_XXX = 1)
If I see the execution plan:
In TABLE_A make a
TABLE ACCESS BY INDEX ROWID
INDEX FULL SCAN (FIELD_A_TABLE_A_PK)
I need INDEX UNIQUE SCAN instead of INDEX FULL SCAN or TABLE ACCESS FULL.
How can obtain it?
What happens???
Thanks!Notice the difference in cardinality between your two select statements:
SELECT STATEMENT, GOAL = ALL_ROWS Cost=5 Cardinality=1
SELECT STATEMENT, GOAL = ALL_ROWS Cost=10450 Cardinality=472161Apparently since the optimizer believed the first statement was going to return one row, it used an index. But in the second statement it believed it was going to return nearly the whole table (didn't you say it had around 500k rows?). Hence full table scan. -
How to Display the content of Excel file into Webdynpro Table
Hi Experts
I am following the Blog to upload a file in to the webdynpro context,but my problem is after uploading a excel file i need to extract the content from that Excel file and that content should be displayed in the webdynpro table.Can any body please guide me how to read the content from excel and to Display in the Table.
Thanks and Regards
KalyanHI,
Take for example, if Excel file contains 4 fields,
Add jxl.jar to JavaBuild path and Use this snippet
File f=new File("sample.xls");
Workbook w=Workbook.getWorkbook(f);
Sheet sh=w.getSheet(0);
int cols=sh.getColumns();
int rows=sh.getRows();
Cell c=null;
String s1=null;
String s2=null;
String s3=null;
String s4=null;
ArrayList al=new ArrayList();
int j=0;
for(int i=1;i<rows;i++)
ITableElement table=wdContext.createTableElementz
s1=sh.getCell(0,i).getContents();
s2=sh.getCell(1,i).getContents();
s3=sh.getCell(2,i).getContents();
s4=sh.getCell(3,i).getContents();
table.setName(s1);
table.setAddress(s2);
table.setDesignation(s3);
table.setDummy(s4);
al.add(j,table);
j++;
wdContext.nodeTable().bind(al);
Regards
LakshmiNarayana -
Using index in a query return few records than full table access
Today we have an issue with a query, when it use the ok index the returned are not all records that apply to where clause condition.
See bellow
explain plan for
select * from movdb.zan_m03 where
M00AF = TO_DATE('11/01/28','YY/MM/DD') AND
M00za = 10 AND
m00AC = 50 AND
M00AD between 136906 and 136999
SELECT * FROM TABLE(dbms_xplan.display);
PLAN_TABLE_OUTPUT
Plan hash value: 1882720105
| Id | Operation | Name |
| 0 | SELECT STATEMENT | |
| 1 | TABLE ACCESS BY INDEX ROWID| ZAN_M03 |
|* 2 | INDEX RANGE SCAN | PK_ZAN_M03 |
Predicate Information (identified by operation id):
PLAN_TABLE_OUTPUT
2 - access("M00AF"=TO_DATE('11/01/28','YY/MM/DD') AND "M00ZA"=10 AND
"M00AC"=50 AND "M00AD">=136906 AND "M00AD"<=137141)
filter("M00AD"<=137141 AND "M00AD">=136906)
Note
- rule based optimizer used (consider using cbo)
20 rows selected.
The query above return only one row insted 1579 record that apply to this conditions.
When forcing a full table acess with a hint, the query return all records that apply, the 1579 record.
select /*+ FULL(zan_m03) */ M00AF, M00za, m00AC , M00AD from movdb.zan_m03 where
M00AF = TO_DATE('11/01/28','YY/MM/DD') AND
M00za = 10 AND
m00AC = 50 AND
M00AD between 136906 and 137141
Can you help me to identify what's happening?
I am with Oracle 10g R2 10.2.0.4 standard edition
the statistics are up to date
the opitimizer_mode are rule, but altering in session level to all_rows happens the same issue.
Nothing about corruption in the alert log.
Thanks in advance
Regards
CristianoYes the query are the same and correct restriction for where clause are M00AD between 136906 and 137141.
I've pasted, by mistake, another test query
The corrects are:
select M00AF, M00za, m00AC , M00AD from movdb.zan_m03 where
M00AF = TO_DATE('11/01/28','YY/MM/DD') AND
M00za = 10 AND
m00AC = 50 AND
M00AD between 136906 and 137141
This use pk index and return one row
select /*+ FULL(zan_m03) */ M00AF, M00za, m00AC , M00AD from movdb.zan_m03 where
M00AF = TO_DATE('11/01/28','YY/MM/DD') AND
M00za = 10 AND
m00AC = 50 AND
M00AD between 136906 and 137141
This does a full table access and return 1579 records
I´ve been searching for wrong results bugs on my oracle support, but not found one that mentions something like our issue.
I checked the dba_tables and dba indexes and the number of rows are different, and I think this would be the same because it's is a pk.
Look this
SQL> select NUM_ROWS from dba_tables where table_name = 'ZAN_M03'
2 /
NUM_ROWS
228527878
select NUM_ROWS from dba_indexes where index_name = 'PK_ZAN_M03';
SQL> select NUM_ROWS from dba_indexes where index_name = 'PK_ZAN_M03';
NUM_ROWS
217510185
Is normal a index for pk having much fewer rows than table? I think not, but not sure.
Again
Thanks in advance
Regards
Cristiano -
Table access by index rowid taking more time
Hi All
I've a query like
update tab1
set col1 = ( select col2 from
tab2
where tab1.id = tab2.id) table 1 has arnd 10,000 rows
table 2 has arnd 1,700,000 rows and has a primay key on column id.
This query is taking around 20 secs to execute. I checked the xplan and most of time taken for table access by index rowid.
Could you please suggest what can be the reason for this. (Can it be the clustering factor or something else)
I checked the stats for the tab2, its just three days old.
Regards
Ashwani>
table 1 has arnd 10,000 rows
table 2 has arnd 1,700,000 rows and has a primay key on column id.
This query is taking around 20 secs to execute. I checked the xplan and most of time taken for table access by index rowid.
Could you please suggest what can be the reason for this. (Can it be the clustering factor or something else)
I checked the stats for the tab2, its just three days old.
>
If you checked the xplan why haven't you posted it so we can look at it? Then we could see what table is being accessed by index rowid. Presumably it is table 2 but we the plan would eliminate the need to make assumptions.
The clustering factor could be a factor. You haven't told us how table1 is being accessed. All rows are being updated so a full table scann is most likely but again the plan would actually show the access.
Did you query the dictionary to see what the clustering factor is? Post the results of that
SQL> select index_name, leaf_blocks, avg_leaf_blocks_per_key, avg_data_blocks_per_key, clustering_factor, distinct_keys
2 from dba_indexes
3 where owner = 'schema'
4 and index_name in ('index_b','index_a'); -
WebDynpro Table Contents to Adobe:
Hi ,
I have WebDynpro Table element containing lots of data and on click of button it has to open in Adobe and display all the contents in Adobe Table. The problem is that i receive only one record which is lead selected in WebDynpro table. In Adobe i used one Subform ( Content type is flowed) and a table element.
Expecting right ans.
Thanks
Vinod V
Points waiting.Hi, Vinod,
Really its surprising. Everything is fine, then y its not working. here I have created a sample application regarding u r problem. Its working fine. While i am giving Updatepdf it shows only one record. In generate pdf, It shows all the records. Possible, Try to create your Interactive form again as its a simple one.
GS -
Oracle 9.2 prefers Table Access Full over Local Index by rowid access
There's this table that has phone call records (30 million per day) that is partitioned by month (using the date column) and stores the last 6 months.
The primary key is date (varchar2 in yymmdd format) + call_id (a varchar2(18) with a format like this yyyymmdd+<3letters>+<sequentialnumber>)
The partition is by range like this:
PARTITION BY RANGE (FECHA)
PARTITION P200804 VALUES LESS THAN ('080501')
LOGGING
NOCOMPRESS,
If I run this query I get this plan
SELECT FECHA, SENTIDOTRAFICO,GEOGRAFIAID,SWITCHID,TIPOTRAFICOID,COUNT(*)
FROM GES_CDRS_RCNG_NEW
WHERE FECHA BETWEEN '080801' AND '080825'
AND TASACION IS NULL
AND BORRADO IS NULL
GROUP BY FECHA, SENTIDOTRAFICO,GEOGRAFIAID,SWITCHID,TIPOTRAFICOID
Plan
SELECT STATEMENT CHOOSECost: 78 K Bytes: 24 K Cardinality: 1 K
2 SORT GROUP BY Cost: 78 K Bytes: 24 K Cardinality: 1 K
1 TABLE ACCESS FULL GESTION.GES_CDRS_RCNG_NEW Cost: 43 K Bytes: 625 M Cardinality: 31 M Partition #: 2 Partitions accessed #5
If I hint the primary key index using /*+INDEX(GES_CDRS_RCNG_NEW PK_CDRS_RCNG_NEW)*/
I get a different plan
Plan
SELECT STATEMENT CHOOSECost: 954 K Bytes: 24 K Cardinality: 1 K
3 SORT GROUP BY Cost: 954 K Bytes: 24 K Cardinality: 1 K
2 TABLE ACCESS BY LOCAL INDEX ROWID GESTION.GES_CDRS_RCNG_NEW Cost: 918 K Bytes: 625 M Cardinality: 31 M Partition #: 2 Partitions accessed #5
1 INDEX RANGE SCAN UNIQUE GESTION.PK_CDRS_RCNG_NEW Cost: 137 K Cardinality: 31 M Partition #: 3 Partitions accessed #5
Looking at the cost, the full scan is way better, but this is obviously not the case. Why does this happen?
This problem forces many querys on this table to use hints or force the index use by adding conditions to the where clause like this
where fecha = '080801'
and clave like '20080801%'
when just by stating the date would be enough to choose the correct partition. It also messes up joins with other tables.
The table is analized every month, it has statistics that claim: 237,981,000 rows, 3,222,677 blocks, GLOBAL STATS: YES, LAST ANALYZED: 15/10/2008 21:05:26, Average row length: 213.
The partition envolved in this query has this stats: 32,520,520 rows, 442,715 blocks, analized on 27/08/2008 20:43:40
The index has this stats: analized on 15/10/2008 21:35:32, Blevel: 3, leaf blocks: 1,056,410, distinct keys: 238,484,510.
It is a local index and each partition has its own statistics.If I don't understand incorrectly the plan and the Predicater information, it seems the full scan version that costs less is actually doing a full scan from the biggining of the table (6 months) up to the 080825 date and the one using an index (hinted) does a better scan.
without hint
| Id | Operation | Name | Rows | Bytes | Cost | Pstart| Pstop |
| 0 | SELECT STATEMENT | | 1170 | 24570 | 78443 | | |
| 1 | SORT GROUP BY | | 1170 | 24570 | 78443 | | |
|* 2 | TABLE ACCESS FULL | GES_CDRS_RCNG_NEW | 31M| 625M| 42579 | 5 | 5 |
Predicate Information (identified by operation id):
2 - filter("GES_CDRS_RCNG_NEW"."FECHA"<='080825')
Note: cpu costing is offWith the hint:
| Id | Operation | Name | Rows | Bytes | Cost | Pstart| Pstop |
| 0 | SELECT STATEMENT | | 1170 | 24570 | 953K| | |
| 1 | SORT GROUP BY | | 1170 | 24570 | 953K| | |
| 2 | TABLE ACCESS BY LOCAL INDEX ROWID| GES_CDRS_RCNG_NEW | 31M| 625M| 918K| 5 | 5 |
|* 3 | INDEX RANGE SCAN | PK_CDRS_RCNG_NEW | 31M| | 136K| 5 | 5 |
Predicate Information (identified by operation id):
3 - access("GES_CDRS_RCNG_NEW"."FECHA">='080801' AND "GES_CDRS_RCNG_NEW"."FECHA"<='080825')
Note: cpu costing is off -
Currency Key Reference field in WebDynpro Table Column
Hi Experts,
I am using a WebDynpro table (not ALV) showing multiple currency fields in a single row - each one potentially referencing a different currency key e.g. Japanese Yen and USD in a single row.
My currency context attributes are already defined as currency types, but how can I assign different currency key references to each of my currency context attributes? Or is this somehow done as a property of the table column UI element?
Thanks for your help,
PeterHi Kris,
You answer is very helpful, but I do have a question about going the DDIC route. So you are saying that if I take a DDIC structure into my context with multiple currency keys as reference fields for multiple currency fields, then my WebDynpro context will know exactly which currency key is the reference for which currency field without having do do this programatically as you described? If that's true, can I bring a whole DDIC structure over to the context and then delete the 'Dictionary Structure' refrence from my context node, so that I can add my own additional fields to the context node? E.g. in the case of DDIC structure VBAP can I get all my currency fields and their reference fields from the DDIC from VBAP and then delete 'VBAP' as a 'Dictionary Structure' from my context node and add my own custom fields. The fields I would have brought in from VBAP still retain their type and everything after the deletion of 'VBAP' as a 'Dictionary Structure', so my question is will it also retain the node_info of what currency key goes with what field?
Please let me know if you happend to have done this before.
Thanks,
Peter -
Export table access to oracle with Database ODBC()
Hi,
I export a table, access 2003, ent_tab whit 'DataBase ODBC()' to oracle.
I open Oracle SQL Developer and i can show table ent_tab, but i go worksheet and execute:
select * from ent_tab
and display error: ORA-00942...
Why??!!
Regards
JomarBecause ODBC created the table with "" which allowed lower case table name, but Oracle uses upper case table name by default. Suggest you recreate the table with upper-case name to avoid having to use "" in select statements.
Edited by: rgeier on Oct 27, 2009 5:34 PM -
How to make 2 lines in a webdynpro table cell?
Hi
Is it possiable to create a WebDynpro Table Call that can contains 2 lines in 1 cell ?Hi Ami,
There are a limited number of UI elements that you may use for a Table Cell Editor, however, with a TextView, you can display text that includes a line break.
The line break is achieved by including the carriage-return-line-feed characters in the Table's data source...
LOOP AT lt_flight_tab ASSIGNING <f>.
CONCATENATE 'Line One' cl_abap_char_utilities=>cr_lf 'Line Two' INTO <f>-test.
ENDLOOP.
Cheers,
Amy -
Excluding slow table access in a UNION ALL view
Hi,
I have a view which unions three tables together.
One component of the view requires a table scan, as 90% of the records are required.
This view is then used in another outer select where these records are actually not required.
So I tagged each component with a code and excluded that in the outer select. However it still appears to access the table.
Is there any way I can exclude a component of the UNION ALL or do I need to explicitly split them?
example:
SELECT * FROM (
SELECT 'A' Q, JANUARY F FROM ENORMOUS.TABLE WHERE KEY = 'Non Selective Key' UNION ALL
SELECT 'B' Q, 1 F FROM DUAL UNION ALL
SELECT 'C' Q, 1 F FROM DUAL
) A
WHERE Q = 'B'
When I run the query plan without the WHERE it performs the table scan
When I include the WHERE it still performs the table scan but with a FILTER NULL IS NOT NULL afterwards.
So it appears that it is doing the table scan regardless and then throwing the records away - is that correct?
Any thoughts appreciated. I would prefer not the split this view out if possible as it is used everywhere.In summary my question is: is The Oracle query planner smart enough to exclude a component from a load of stacked UNION ALL queries?
given this query:
CREATE VIEW TEST AS
SELECT Q, F
FROM
SELECT 'A' Q, JANUARY F FROM ENORMOUS.TABLE WHERE KEY = 'Non Selective Key' UNION ALL
SELECT 'B' Q, 1 F FROM DUAL UNION ALL
SELECT 'C' Q, 1 F FROM DUAL
) A;
-- 1. This one selects from all tables, including a table scan on the enormous table
SELECT * FROM TEST;
-- 2. This one selects from all tables, including a table scan on the enormous table
-- However the query plan has a FILTER after the table scan. Does it exclude this work?
SELECT * FROM TEST WHERE Q = 'B';When I run the query plan without the WHERE it performs the table scan
When I include the WHERE the query plan indicates it's doing the table scan but with a FILTER NULL IS NOT NULL afterwards.
So it appears that it is doing the table scan regardless and then throwing the records away - is that correct?
Any thoughts appreciated. I would prefer not the split this view out if possible as it is used everywhere.
Oracle version:
Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production
PL/SQL Release 11.2.0.2.0 - Production
CORE 11.2.0.2.0 Production
TNS for 64-bit Windows: Version 11.2.0.2.0 - Production
NLSRTL Version 11.2.0.2.0 - Production
Plan output for 1:
SELECT STATEMENT Optimizer Mode=ALL_ROWS (Cost=7166 Card=2 M Bytes=41 M)
1 VIEW (Cost=7166 Card=2 M Bytes=41 M)
2 1 UNION-ALL
3 2 TABLE ACCESS FULL PLANNING.BF_GEN_STATS_TRAN (Cost=7162 Card=2 M Bytes=72 M)
4 2 FAST DUAL (Cost=2 Card=1)
5 2 FAST DUAL (Cost=2 Card=1)
Plan output for 2:
SELECT STATEMENT Optimizer Mode=ALL_ROWS (Cost=2 Card=3 Bytes=48)
1 VIEW (Cost=2 Card=3 Bytes=48)
2 1 UNION-ALL
3 2 FILTER
4 3 TABLE ACCESS FULL PLANNING.BF_GEN_STATS_TRAN (Cost=7162 Card=2 M Bytes=72 M)
5 2 FAST DUAL (Cost=2 Card=1)
6 2 FILTER
7 6 FAST DUAL (Cost=2 Card=1) -
Hi Colleagues.
Im using NW 7.0 Java webdynpro
Can I use dynamic pagination for java webdynpro table. I found an article explaining the same with NW7.1.
Is there any option the functionality available in NW 7.0
Thanks
BalaHi
PLease check this article link
https://www.sdn.sap.com/irj/scn/index?rid=/library/uuid/e0d6c30a-c99e-2b10-f09b-c9a00b7e78c6&overridelayout=true
Also check this blog link
/people/bertram.ganz/blog/2008/11/27/web-dynpro-java-table-paging-unleashed-optimizing-heavy-table-performance
Regards
Ruturaj
Edited by: Ruturaj Inamdar on Jul 31, 2009 1:32 PM -
Regarding excel file download from webdynpro table element
Hi All,
I want steps to do excel download from webdynpro table element.
Thanks in advance.
Regards,
Muneesh Gitta.Hi Gitta,
There are 2 ways in doing it, one is using GUI DOWNLOAD FM or using class clwd_runtime_services.
DATA:
node_node_alv TYPE REF TO if_wd_context_node,
elem_node_alv TYPE REF TO if_wd_context_element,
stru_node_alv TYPE wd_this->element_node_alv,
itab_node_alv TYPE TABLE OF wd_this->element_node_alv..
navigate from <CONTEXT> to <NODE_ALV> via lead selection
@TODO handle not set lead selection
IF ( node_node_alv IS INITIAL ).
ENDIF.
get all declared attributes
node_node_alv->get_static_attributes_table(
IMPORTING
table = itab_node_alv ).
DATA:
node_file_download TYPE REF TO if_wd_context_node,
elem_file_download TYPE REF TO if_wd_context_element,
stru_file_download TYPE wd_this->element_file_download ,
item_fname LIKE stru_file_download-fname.
navigate from <CONTEXT> to <FILE_DOWNLOAD> via lead selection
node_file_download = wd_context->get_child_node( name = wd_this->wdctx_file_download ).
get element via lead selection
elem_file_download = node_file_download->get_element( ).
get single attribute
elem_file_download->get_attribute(
EXPORTING
name = `FNAME`
IMPORTING
value = item_fname ).
CALL FUNCTION 'GUI_DOWNLOAD'
EXPORTING
filename = item_fname
FILETYPE = 'ASC'
TABLES
data_tab = itab_node_alv.
IF sy-subrc <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
OR
check this blog for
Re: Export to Excel Sheet functionality -
oracle 9.2.0.8 (if there's a 10G way that would work)
This is a simplified view of a much biiger table I am having to deal with.
create table stg
(ddate date,
num number);
insert into stg
select sysdate, 26 from dual
union all
select sysdate - 1, 38 from dual
union all
select sysdate - 2, 10 from dual
union all
select sysdate - 3, 40 from dual
union all
select sysdate - 4, 50 from dual
union all
select sysdate - 5, 1 from dual
union all
select sysdate - 6, 11 from dual
union all
select sysdate - 7, 50 from dual
union all
select sysdate - 9, 38 from dual
union all
select sysdate - 10, 20 from dual
union all
select sysdate - 11, 11 from dual
union all
select sysdate - 12, 99 from dual
union all
select sysdate - 13, 18 from dual
union all
select sysdate - 14, 27 from dual
union all
select sysdate - 15, 28 from dual
union all
select sysdate - 16, 2 from dual
union all
select sysdate - 17, 99 from dual
union all
select sysdate - 18, 12 from dual
union all
select sysdate - 19, 27 from dual
union all
select sysdate - 20, 28 from dual
select
sum(case when ddate > d.the_date then 1
else 0
end)
,sum(case when ddate < d.the_date then 1
else 0
end)
,the_date
,max(ddate)
from stg, (select min(ddate) as the_date from stg
where num in (10,11,12,13,14,25))d
group by the_date
the query does give me the result set I'm looking for but the explain plan
shows it takes 2 table accesses. My question is how to re-write this so it
takes one access.
I have tried the analytic functions but there does not seem to be a way to
use the where clause in just the analytic function. Also I have tried:
select min(ddate), max(ddate) from stg
where num in (10,11,12,13,14,25)
but the problem with this is the max is the max where num is (10,11,12,13,14,25)not the max of the whole table.
any ideas to get rid of the nested loop would be helpful
thanksWhat do you want is not clear for me, but you can try to replace your query :
SCOTT@demo102> select greater,lesser,min_date,max_date
2 from
3 (SELECT
4 SUM(decode(SIGN(ddate -stg_sub."min_date"), 1, 1, 0)) over() AS greater
5 ,SUM(decode(SIGN(ddate -stg_sub."min_date"), -1, 1, 0)) over() AS lesser
6 ,stg_sub."min_date" AS min_date
7 ,stg_sub."max_date" AS max_date
8 ,rownum AS rnum
9 FROM
10 (SELECT
11 ddate
12 ,(SELECT MIN(ddate) FROM stg WHERE num IN(10,11,12,13,14,25)) AS "min_date"
13 ,max(ddate) over() AS "max_date"
14 FROM stg)stg_sub)
15 where rnum = 1
16 ;
GREATER LESSER MIN_DATE MAX_DATE
17 2 26/09/06 14/10/06by
SCOTT@demo102> select sum(greater) greater, sum(lesser) lesser, max(min_date) min_date, max(max_date) max_date
2 from
3 (SELECT
4 case when ddate - MIN(case when num IN(10,11,12,13,14,25) then ddate end) over () > 0 then 1 end AS greater,
5 case when ddate - MIN(case when num IN(10,11,12,13,14,25) then ddate end) over () < 0 then 1 end AS lesser,
6 MIN(case when num IN(10,11,12,13,14,25) then ddate end) over () as min_date,
7 max(ddate) over() AS max_date
8 FROM stg)
9 ;
GREATER LESSER MIN_DATE MAX_DATE
17 2 26/09/06 14/10/06
SCOTT@demo102>
It is a lower cost What did you mean by cost ? Is it cost from explain plan ? Take care, a low cost here doesn't say that your query will run fatser...
Nicolas.
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