Best way to write SELECT statement

Hi,
I am selecting fields from one table, and need to use two fields on that table to look up additional fields in two other tables.
I do not want to use a VIEW to do this.
I need to keep all records in the original selection, yet I've been told that it's not good practice to use LEFT OUTER joins. What I really need to do is multiple LEFT OUTER joins.
What is the best way to write this? Please reply with actual code.
I could use 3 internal tables, where the second 2 use "FOR ALL ENTRIES" to obtain the additional data. But then how do I append the 2 internal tables back to the first? I've been told it's bad practice to use nested loops as well.
Thanks.

Hi,
in your case having 2 internal table to update the one internal tables.
do the following steps:
*get the records from tables
sort: itab1 by key field, "Sorting by key is very important
 itab2 by key field. "Same key which is used for where condition is used here
loop at itab1 into wa_tab1.
read itab2 into wa_tab2 " This sets the sy-tabix
 with key key field = wa_tab1-key field
 binary search.
if sy-subrc = 0. "Does not enter the inner loop
 v_kna1_index = sy-tabix.
 loop at itab2 into wa_tab2 from v_kna1_index. "Avoiding Where clause
 if wa_tab2-keyfield <> wa_tab1-key field. "This checks whether to exit out of loop
 exit.
 endif.
****** Your Actual logic within inner loop ******
 endloop. "itab2 Loop
endif.
endloop. " itab1 Loop
Refer the link also you can get idea about the Parallel Cursor - Loop Processing.
http://wiki.sdn.sap.com/wiki/display/Snippets/CopyofABAPCodeforParallelCursor-Loop+Processing
Regards,
Dhina..

Similar Messages

Hi just want to know where is the best way to type the statement?

just to ask you what is the best way to write the statement please

Could you please explain what the topic and statement is about?
Helps to narrow the focus, down to a specific hardware or software
question pertaining to the Apple products involved, where applicable.
Basic word processing can be accomplished in TextEdit, if you do
not have Pages or any other software to write with, for example.
Yet, there is no indication of the purpose, direction, or problem.
Good luck & happy computing!

Best way to write this sql ?

Please let me know best way to write this SQL.
select col1, count(*)
from TableA
group by col1
having count(*) =
(select max(vals)
from
select col1, count(*) as vals
from TableA
group by col1
having count(*) > 1
)

post EXPLAIN PLAN
SELECT col1,
       COUNT(*)
FROM   tablea
GROUP BY col1
HAVING COUNT(*) = (SELECT MAX(vals)
                   FROM   (SELECT col1,
                                  COUNT(*) AS vals
                           FROM   tablea
                           GROUP BY col1
                           HAVING COUNT(*) > 1))

What is a best way to write SQL ?

Sample Case
drop table t;
drop table b;
create table t ( a varchar2(4), b number, c varchar2(1));
insert into t values ('A00', 10, 'R');
insert into t values ('A01', 11, 'R');
insert into t values ('A02', 12, 'R');
insert into t values ('A03', 13, 'R');
insert into t values ('A00', 10, 'P');
insert into t values ('A01', 11, 'P');
insert into t values ('A02', 12, 'P');
insert into t values ('A03', 13, 'P');
commit;
create table b ( j varchar(4), k varchar2(1), l varchar2(5), m number(3), n varchar2(5), o number(3));
insert into b values ('A00', 'P', 'FIXED', 100, 'FLOAT', 60);
insert into b values ('A01', 'P', 'FIXED', 101, 'FIXED', 30);
insert into b values ('A02', 'R', 'FLOAT', 45, 'FLOAT', 72);
insert into b values ('A03', 'R', 'FIXED', 55, 'FLOAT', 53);
commit;
10:19:13 SQL> select * from t;
A B C
A00 10 R
A01 11 R
A02 12 R
A03 13 R
A00 10 P
A01 11 P
A02 12 P
A03 13 P
8 rows selected.
10:19:19 SQL> select * from b;
J K L M N O
A00 P FIXED 100 FLOAT 60
A01 P FIXED 101 FIXED 30
A02 R FLOAT 45 FLOAT 72
A03 R FIXED 55 FLOAT 53
1/     In table t each reference having 2 records one with P another is with R
2/     In table b each refrence merged into single record and there are many records which are not existing in table t
3/      both t and j tables can be joined using a = j
4/     If from table t for a reference indicator is 'P' then if have to pick up l and m columns, if it is 'R' then I have to pick up n and o columns
5/     I want output in following format
A00     P     FIXED          100
A00     R     FLOAT          60
A01     P     FIXED          101
A01     R     FIXED          30
A02     P     FLOAT          72
A02     R     FLOAT          45
A03     P     FLOAT          53
A03     R     FIXED          55
6/     Above example is a sample ouput, In above example I have picked up only l,m,n,o columns, but in real example there are many columns ( around 40 ) to be selected. ( using "case when" may not be practical )
Kindly suggest me what is a best way to write SQL ?
thanks & regards
pjp

Is this?
select b.j,t.c as k,decode(t.c,'P',l,n) as l,decode(t.c,'P',m,o) as m
from t,b
where t.a=b.j
order by j,k
J K L M
A00 P FIXED 100
A00 R FLOAT 60
A01 P FIXED 101
A01 R FIXED 30
A02 P FLOAT 45
A02 R FLOAT 72
A03 P FIXED 55
A03 R FLOAT 53
8 rows selected.
or is this?
select b.j,t.c as k,decode(t.c,b.k,l,n) as l,decode(t.c,b.k,m,o) as m
from t,b
where t.a=b.j
order by j,k
J K L M
A00 P FIXED 100
A00 R FLOAT 60
A01 P FIXED 101
A01 R FIXED 30
A02 P FLOAT 72
A02 R FLOAT 45
A03 P FLOAT 53
A03 R FIXED 55
8 rows selected.

Best way to write Pl/Sql

Dear all,
Can someone say the best way writing below stored proc:
procedure missing_authorized_services is
v_truncate_sql varchar2(200);
v_sql varchar2(2000);
BEGIN
v_truncate_sql := 'truncate table missing_authorized_services';
     execute immediate v_truncate_sql;
     commit;
v_sql := 'INSERT into missing_authorized_services select distinct trim(service_group_Cd) as service_group_Cd, trim(service_cd) as service_cd from stage_1_mg_service_request
where (service_group_cd, service_cd) not in (
                    select distinct service_group_cd, service_cd from stage_3_servcd_servgrp_dim)';
execute immediate v_sql;
     commit;
END missing_authorized_services;
/* I am doing select from table and then try to Insert into a different table the result set */
Please guide,
Thanks
J

Hi,
The best way to write PL/SQL (or any code) is in very small increments.
Start with a very simple procedure that does something (anything), just enough to test that it's working.
Add lots of ouput statments so you can see what the procedure is doing. Remember to remove them after testing is finished.
For example:
CREATE OR REPLACE procedure missing_authorized_services IS
        v_truncate_sql VARCHAR2 (200);
BEGIN
     v_truncate_sql := 'truncate table missing_authorized_services';
     dbms_output.put_line ( v_truncate_sql
                    || ' = v_truncate_sql inside missing_authorized_services'
END      missing_authorized_services;If you get any errors (for example, ORA-00955, becuase you're trying to give the same name to a procedure that you're already using for a table), then fix the error and try again.
When it worls perfectly, then add another baby step. For example, you might add the one line
EXECUTE IMMEDIATE v_truncate_sql;and test again.
Don't use dynamic SQL (EXECUTE IMMEDIATE) unless you have to.
Is there any reason to use dynamic SQL for the INSERT?

How to write select statement in XSL-FO type XML program

Hi All,
Could you please anyone explain briefly how to write select statement in XSL-FO XML Program.
Requirement:
In the seeded program, OAF page is creating one XML file and through XSL-FO type XML Pulisher loading data and generating PDF output. as per the requirement some of the informations are missing in the XML file and for modifing the OAF page will be taking someting. we are planing to write a select query inside the XSL-FO program to get the required information.
Could you please help me how to write a select statement inside the XSL-FO type programs.
Please give me some example program for this...
Thanks in Advance.
Regards,
Senthil

Hi ,
Please check the below code and modified plant as select-option
Check the below code :
tables : mara,
mast.
data : begin of i_data occurs 0,
matnr like mara-matnr,
end of i_data.
select-options : s_matnr for mara-matnr,
S_werks for mast-werks.
start-of-selection.
select a~matnr into table i_data
from mara as a inner join mast as b on amatnr = bmatnr
where b~werks in s_werks
and a~matnr in s_matnr
and a~mtart = 'AA'
or a~mtart = 'UT'
and b~stlan = '1'.
loop at i_data.
write:/ i_data-matnr.
endloop.
Hope you got it.
Thanks
Seshu

How to write select statement directly in java file instead of using vo

Hi,
I have written the following code in my java file:
if(empvo==null)
empvo=worklistamimpl2.createViewObject("InvoiceVO", "xxetfc.oracle.apps.icx.icatalog.shopping.server.InvoiceVO");
if(empvo!=null){
OAViewObject oaviewobject2 = (OAViewObject)worklistamimpl2.findViewObject("InvoiceVO");
OAViewObjectImpl oaviewobjectimpl = (OAViewObjectImpl)oapagecontext.getApplicationModule(oawebbean).findViewObject("InvoiceVO");
oaviewobject2.setWhereClause("Invoice_num="+" ' " + s + " ' ");
oaviewobjectimpl.executeQuery();
String abc = (String)oaviewobjectimpl.first().getAttribute("Invoice_id");
It is giving me error as
oracle.apps.fnd.framework.OAException: oracle.jbo.SQLStmtException: JBO-27122: SQL error during statement preparation. Statement: SELECT * FROM (select invoice_id from ap_invoices_all) QRSLT WHERE (Invoice_num='ERS15022012_3')
1. Why is this error coming.. how to solve this
2. Instead of using vo how can i write select statement directly in the above code
Thanks,
Edited by: user10873676 on Apr 9, 2012 1:18 AM
Edited by: user10873676 on Apr 9, 2012 1:21 AM

it says java.sql.SQLSyntaxErrorException: ORA-00904: "INVOICE_NUM": invalid identifier
where as invoice_num column is present in my table

How to write Select statement for this codition

I need to check whether SGTXT contains BELNR value.
SGTXT is a text field and It should be matched with BELNR
How to write select statement for this.
Select AUGBL AUGDT into t_BSAD
from BSAD
where SGTXT should have the given BELNR Value.
Plz note : Here I cannot give as SGTXT = BELNR as coz BELNR have only 10 digits.

Hi,
data temp(12).
concatenate '%' belnr '%' into temp.
Select AUGBL AUGDT into t_BSAD
from BSAD
where SGTXT like temp.
If belnr is having multiple values,just create a internal table as follows.
types : begin of ty,
        belnr....
        temp(12),
        end of ty.
data itab_ type standard table of ty.
data wa type ty.
loop at itab into wa.
concatenate '%' wa-belnr '%' into wa-temp.
modify itab from wa index sy-tabix transporting temp.
endloop.
Change your select statement accordingly.
Kindly reward poits if it helps.

How to write SELECT statement using tables ekko,ekpo and eket?

Hi,
I got a problem in performance tuning using below tables?
how to write SELECT statement using tables EKKO,EKPO and EKET and in conditon ( WHERE clause) use only fields
                    ekko~ebeln       IN ebeln
                   ekko~loekz       EQ ' '
                   ekko~lifnr       IN lifnr
                   ekko~ekorg       IN ekorg
                  ekko~ekgrp       IN ekgrp
                   ekpo~werks       IN werks
                   ekpo~pstyp       EQ '3'
                   ekpo~loekz       EQ space
                   ekpo~elikz       EQ space
                   ekpo~menge       NE 0
                 eket~rsnum       NE space.
Thanks in Advance.
bye.

Hi,
ekko~ebeln IN ebeln
ekko~loekz EQ ' '
ekko~lifnr IN lifnr
ekko~ekorg IN ekorg
ekko~ekgrp IN ekgrp
ekpo~werks IN werks
ekpo~pstyp EQ '3'
ekpo~loekz EQ space
ekpo~elikz EQ space
ekpo~menge NE 0          " Remove this from where clause
eket~rsnum NE space.    " Remove this from where clause
' instead delete the entries after fetching into the table
DELETE it_itab WHERE menge EQ '0' AND rsnum EQ ' '.
Regards
Bala Krishna

Best way to write an Wrapper class around a POJO

Hi guys,
What is the best way to write an Wrapper around a Hibernate POJO, given the latest 2.2 possibilities? The goal is, of course, to map 'regular' Java Bean properties to JavaFX 2 Properties, so that they can be used in GUI.
Thanks!

what about this:
import javafx.beans.property.SimpleStringProperty;
import javafx.beans.property.StringProperty;
public class PersonPropertyWrapper {
     private StringProperty firstName;
     private StringProperty lastName;
     private Person _person;
     public PersonPropertyWrapper(Person person) {
          super();
          this._person = person;
          firstName = new SimpleStringProperty(_person.getFirstName()) {
               @Override
               protected void invalidated() {
                    _person.setFirstName(getValue());
          lastName = new SimpleStringProperty(_person.getLastName()) {
               @Override
               protected void invalidated() {
                    _person.setLastName(getValue());
     public StringProperty firstNameProperty() {
          return firstName;
     public StringProperty lastNameProperty() {
          return lastName;
     public static class Person {
          private String firstName;
          private String lastName;
          public String getFirstName() {
               return firstName;
          public void setFirstName(String firstName) {
               this.firstName = firstName;
          public String getLastName() {
               return lastName;
          public void setLastName(String lastName) {
               this.lastName = lastName;
     public static void main(String[] args) {
          Person p = new Person();
          p.setFirstName("Jim");
          p.setLastName("Green");
          PersonPropertyWrapper wrapper = new PersonPropertyWrapper(p);
          wrapper.firstNameProperty().setValue("Jerry");
          System.out.println(p.getFirstName());
}Edited by: 906680 on 2012-7-27 上午10:56

Best way to write the following query

Hi ,
I've the following table structures and data..
And i've written the query to get the records which are greater than BBB-
But could you please hint me to write in simpler way.
create table obj (ob_id )
as select 1 from dual union all
select 2 from dual union all
select 3 from dual union all
select 4 from dual union all
select 5 from dual union all
select 6 from dual
create table og_dt (or_id , rt_cd,rt_ct_cd)
AS SELECT 1 ,'B','BRID' FROM DUAL UNION ALL
 SELECT 1 ,'B','BRD' FROM DUAL UNION ALL
 SELECT 2 ,'BB-','ACR' FROM DUAL UNION ALL
 SELECT 2 ,'BB-','AQCR' FROM DUAL UNION ALL
 SELECT 3 ,'BBB','QYRE' FROM DUAL UNION ALL
 SELECT 4 ,'BB+','TUR' FROM DUAL UNION ALL
 SELECT 5 ,'BBB-','KUYR' FROM DUAL
create table rt_srt (srt_ord,rt_cd,rt_ct_cd)
as select 50 ,'B','VID' FROM DUAL UNION ALL
 SELECT 50 ,'B','BRD' FROM DUAL UNION ALL
 SELECT 40 ,'BB-','ACR' FROM DUAL UNION ALL
 SELECT 41 ,'BB-','AQCR' FROM DUAL UNION ALL
 SELECT 30 ,'BBB','QYRE' FROM DUAL UNION ALL
 SELECT 33 ,'BB+','TUR' FROM DUAL UNION ALL
 SELECT 20 ,'BBB-','KUYR' FROM DUAL
select distinct
 from obj,og_dt,rt_srt
where obj.ob_id=og_dt.or_id
and og_dt.rt_cd = rt_srt.rt_cd
and og_dt.rt_ct_cd=rt_srt.rt_ct_cd
and rt_srt.srt_ord > all (select rt_srt.srt_ord from rt_srt
where rt_cd='BBB-' I've used the table rt_srt twise in the above query
Could you please hint to write it in the simple way.
Thank you

Here are execution plans for 3 possible solutions (incuding one you posted). Second & third solutions assume rt_srt.srt_ord is not null:
SQL> explain plan for
2 select distinct *
3 from obj,
4 og_dt,
5 rt_srt
6 where obj.ob_id = og_dt.or_id
7 and og_dt.rt_cd = rt_srt.rt_cd
8 and og_dt.rt_ct_cd = rt_srt.rt_ct_cd
9 and rt_srt.srt_ord > all (
10 select rt_srt.srt_ord
11 from rt_srt
12 where rt_cd = 'BBB-'
13 )
14 /
Explained.
SQL> @?\rdbms\admin\utlxpls
PLAN_TABLE_OUTPUT
Plan hash value: 3210303028
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | 7 | 504 | 16 (25)| 00:00:01 |
| 1 | HASH UNIQUE | | 7 | 504 | 16 (25)| 00:00:01 |
| 2 | MERGE JOIN ANTI NA | | 7 | 504 | 15 (20)| 00:00:01 |
| 3 | SORT JOIN | | 7 | 385 | 11 (19)| 00:00:01 |
|* 4 | HASH JOIN | | 7 | 385 | 10 (10)| 00:00:01 |
|* 5 | HASH JOIN | | 7 | 238 | 7 (15)| 00:00:01 |
PLAN_TABLE_OUTPUT
| 6 | TABLE ACCESS FULL| OBJ | 6 | 78 | 3 (0)| 00:00:01 |
| 7 | TABLE ACCESS FULL| OG_DT | 7 | 147 | 3 (0)| 00:00:01 |
| 8 | TABLE ACCESS FULL | RT_SRT | 7 | 147 | 3 (0)| 00:00:01 |
|* 9 | SORT UNIQUE | | 1 | 17 | 4 (25)| 00:00:01 |
|* 10 | TABLE ACCESS FULL | RT_SRT | 1 | 17 | 3 (0)| 00:00:01 |
Predicate Information (identified by operation id):
 4 - access("OG_DT"."RT_CD"="RT_SRT"."RT_CD" AND
PLAN_TABLE_OUTPUT
 "OG_DT"."RT_CT_CD"="RT_SRT"."RT_CT_CD")
 5 - access("OBJ"."OB_ID"="OG_DT"."OR_ID")
 9 - access("RT_SRT"."SRT_ORD"<="RT_SRT"."SRT_ORD")
 filter("RT_SRT"."SRT_ORD"<="RT_SRT"."SRT_ORD")
10 - filter("RT_CD"='BBB-')
Note
 - dynamic sampling used for this statement (level=2)
31 rows selected.
SQL> explain plan for
2 select distinct *
3 from obj,
4 og_dt,
5 rt_srt
6 where obj.ob_id = og_dt.or_id
7 and og_dt.rt_cd = rt_srt.rt_cd
8 and og_dt.rt_ct_cd = rt_srt.rt_ct_cd
9 and rt_srt.srt_ord > (
10 select max(rt_srt.srt_ord)
11 from rt_srt
12 where rt_cd = 'BBB-'
13 )
14 /
Explained.
SQL> @?\rdbms\admin\utlxpls
PLAN_TABLE_OUTPUT
Plan hash value: 3391900174
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | 1 | 55 | 14 (15)| 00:00:01 |
| 1 | HASH UNIQUE | | 1 | 55 | 14 (15)| 00:00:01 |
|* 2 | HASH JOIN | | 1 | 55 | 10 (10)| 00:00:01 |
| 3 | MERGE JOIN CARTESIAN| | 2 | 68 | 6 (0)| 00:00:01 |
|* 4 | TABLE ACCESS FULL | RT_SRT | 1 | 21 | 3 (0)| 00:00:01 |
| 5 | SORT AGGREGATE | | 1 | 17 | | |
PLAN_TABLE_OUTPUT
|* 6 | TABLE ACCESS FULL| RT_SRT | 1 | 17 | 3 (0)| 00:00:01 |
| 7 | BUFFER SORT | | 6 | 78 | 3 (0)| 00:00:01 |
| 8 | TABLE ACCESS FULL | OBJ | 6 | 78 | 3 (0)| 00:00:01 |
| 9 | TABLE ACCESS FULL | OG_DT | 7 | 147 | 3 (0)| 00:00:01 |
Predicate Information (identified by operation id):
 2 - access("OBJ"."OB_ID"="OG_DT"."OR_ID" AND
 "OG_DT"."RT_CD"="RT_SRT"."RT_CD" AND
PLAN_TABLE_OUTPUT
 "OG_DT"."RT_CT_CD"="RT_SRT"."RT_CT_CD")
 4 - filter("RT_SRT"."SRT_ORD"> (SELECT MAX("RT_SRT"."SRT_ORD") FROM
 "RT_SRT" "RT_SRT" WHERE "RT_CD"='BBB-'))
 6 - filter("RT_CD"='BBB-')
Note
 - dynamic sampling used for this statement (level=2)
30 rows selected.
SQL> explain plan for
2 select distinct obj.*,
3 og_dt.*,
4 rt_srt.srt_ord,
5 rt_srt.rt_cd,
6 rt_srt.rt_ct_cd
7 from obj,
8 og_dt,
9 (
10 select t.*,
11 max(case rt_cd when 'BBB-' then srt_ord end) over() max_srt_ord
12 from rt_srt t
13 ) rt_srt
14 where obj.ob_id = og_dt.or_id
15 and og_dt.rt_cd = rt_srt.rt_cd
16 and og_dt.rt_ct_cd = rt_srt.rt_ct_cd
17 and rt_srt.srt_ord > max_srt_ord
18 /
Explained.
SQL> @?\rdbms\admin\utlxpls
PLAN_TABLE_OUTPUT
Plan hash value: 998396165
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | 7 | 476 | 11 (19)| 00:00:01 |
| 1 | HASH UNIQUE | | 7 | 476 | 11 (19)| 00:00:01 |
|* 2 | HASH JOIN | | 7 | 476 | 10 (10)| 00:00:01 |
|* 3 | HASH JOIN | | 7 | 238 | 7 (15)| 00:00:01 |
| 4 | TABLE ACCESS FULL | OBJ | 6 | 78 | 3 (0)| 00:00:01 |
| 5 | TABLE ACCESS FULL | OG_DT | 7 | 147 | 3 (0)| 00:00:01 |
PLAN_TABLE_OUTPUT
|* 6 | VIEW | | 7 | 238 | 3 (0)| 00:00:01 |
| 7 | WINDOW BUFFER | | 7 | 147 | 3 (0)| 00:00:01 |
| 8 | TABLE ACCESS FULL| RT_SRT | 7 | 147 | 3 (0)| 00:00:01 |
Predicate Information (identified by operation id):
 2 - access("OG_DT"."RT_CD"="RT_SRT"."RT_CD" AND
 "OG_DT"."RT_CT_CD"="RT_SRT"."RT_CT_CD")
 3 - access("OBJ"."OB_ID"="OG_DT"."OR_ID")
PLAN_TABLE_OUTPUT
 6 - filter("RT_SRT"."SRT_ORD">"MAX_SRT_ORD")
Note
 - dynamic sampling used for this statement (level=2)
27 rows selected.
SQL> SY.
Edited by: Solomon Yakobson on May 7, 2012 4:46 PM

What is the best way to write 10 channels of data each sampled at 4kHz to file?

Hi everyone,
I have developed a vi with about 8 AI channels and 2 AO channels... The vi uses a number of parallel while loops to acquire, process, and display continous data.. All data are read at 400 points per loop interation and all synchronously sampled at 4kHz...
My questions is: Which is the best way of writing the data to file? The "Write Measurement To File.vi" or low-level "open/create file" and "close file" functions? From my understanding there are limitations with both approaches, which I have outlines below..
The "Write Measurement To File.vi" is simple to use and closes the file after each interation so if the program crashes not all data would necessary be lost; however, the fact it closes and opens the file after each iteration consumes the processor and takes time... This may cause lags or data to be lost, which I absolutely do not want..
The low-level "open/create file" and "close file" functions involves a bit more coding, but does not require the file to be closed/opened after each iteration; so processor consumption is reduced and associated lag due to continuous open/close operations will not occur.. However, if the program crashes while data is being acquired ALL data in the buffer yet to be written will be lost... This is risky to me...
Does anyone have any comments or suggestions about which way I should go?... At the end of the day, I want to be able to start/stop the write to file process within a running while loop... To do this can the opn/create file and close file functions even be used (as they will need to be inside a while loop)?
I think I am ok with the coding... Just the some help to clarify which direction I should go and the pros and cons for each...
Regards,
Jack
Attachments:
TMS [PXI] FINAL DONE.vi ‏338 KB

One thing you have not mentioned is how you are consuming the data after you save it. Your solution should be compatible with whatever software you are using at both ends.
Your data rate (40kS/s) is relatively slow. You can achieve it using just about any format from ASCII, to raw binary and TDMS, provided you keep your file open and close operations out of the write loop. I would recommend a producer/consumer architecture to decouple the data collection from the data writing. This may not be necessary at the low rates you are using, but it is good practice and would enable you to scale to hardware limited speeds.
TDMS was designed for logging and is a safe format (<fullDisclosure> I am a National Instruments employee </fullDisclosure> ). If you are worried about power failures, you should flush it after every write operation, since TDMS can buffer data and write it in larger chunks to give better performance and smaller file sizes. This will make it slower, but should not be an issue at your write speeds. Make sure you read up on the use of TDMS and how and when it buffers data so you can make sure your implementation does what you would like it to do.
If you have further questions, let us know.
This account is no longer active. Contact ShadesOfGray for current posts and information.

How is the best way to manage the stats table?

Hello!
I have the Integration 2.1 working with an Oracle 8.1.7 db. I noticed that the table
STATS is growing pretty fast.
How is the best way to manage this table?... I haven't found something related with
this issue in the documentation, but at least I want to know how to safely delete
records from this table.
For example, if I know the minimal time I have to keep in the table, is quite simple
to create a shell script and/or Oracle pl/sql job to trim the table.
I hope somebody can help me!!!!
Thank you!
Ulises Sandoval

Write an app people want to buy and rate highly.

How to write select statement into SCRIPT editor

hello,
i build a sap script for purchase order printing for exporting.
now after all po order print fine then our client want some more should be print into layout regarding po header.
At the soul my q is can i write select query into script editor itself.
thanks and regards
amit.

You cannot write your select statement inside your SAPscript, to overcome this SAP has provided us an option of calling sub-routines.. go through the below example
Go through this example
Ex. SAPSCRIPT
/: PERFORM <Subroutine name> IN PROGRAM <subroutine prog name>
/:USING &<field name>&
/:CHANGING &<field name1& "It will be returned back from sub-routine
/:ENDPERFORM
Then create subroutine pool program(of your own name) and you have to write the code.
FORM ><subroutine name> tables int_cond structure itcsy
outt_cond structure itcsy.
data : value(20), value1(20). "do your own declarations
Read int_cond table index 1.
value = int_cond-value.
value1 = value1 + value.
*****Write your select statement
Read outt_cond table index 1.
outt_cond-value = value1.
Modify outt_cond index 1.
ENDFORM.
Just rough idea given above.
Regards,
SaiRam

How to write select statement ?

Hi,
i have requirement like below :
In selection screen we have material number as selection options and plant as single entry.
Based on the input.
We have to extract the material number and plant based on MTART = AA or UT in MARA table and STLAN = 1 in MAST table.
how to write a select statment to pick values from selection option and extract those material and plant which fullfill above conditions.
Please let me know..
its urgent
please help..
i have written code like below..
types: begin of x_it_mat,
 matnr type mkal-matnr,
 werks type mkal-werks,
 stlan type mast-stlan,
 end of x_it_mat.
types: begin of x_it_mat1,
 matnr type mkal-matnr,
 werks type mkal-werks,
 mtart type mara-mtart,
 end of x_it_mat1.
data : it_mat type table of x_it_mat,
 wa_mat like line of it_mat.
data : it_mat1 type table of x_it_mat1,
 wa_mat1 like line of it_mat1.
TABLES: MKAL , MAST , MARA.
SELECTION-SCREEN BEGIN OF BLOCK matnr
 WITH FRAME TITLE TEXT-001.
select-options :
so_matnr for mkal-matnr.
SELECTION-SCREEN END OF BLOCK matnr.
SELECTION-SCREEN BEGIN OF BLOCK plant
 WITH FRAME TITLE TEXT-002.
parameter p_werks type mkal-werks.
SELECTION-SCREEN END OF BLOCK plant.
select matnr
 werks
 stlan
 from mkal INTO table it_mat
 where matnr in so_matnr
 and werks = p_werks.
after this how to write another select statement to extract material by satisfiying above 2 conditions..

Hi ,
Please check the below code and modified plant as select-option
Check the below code :
tables : mara,
mast.
data : begin of i_data occurs 0,
matnr like mara-matnr,
end of i_data.
select-options : s_matnr for mara-matnr,
 S_werks for mast-werks.
start-of-selection.
select a~matnr into table i_data
from mara as a inner join mast as b on amatnr = bmatnr
where b~werks in s_werks
and a~matnr in s_matnr
and a~mtart = 'AA'
or a~mtart = 'UT'
and b~stlan = '1'.
loop at i_data.
write:/ i_data-matnr.
endloop.
Hope you got it.
Thanks
Seshu

Best way to write SELECT statement

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