Doubt in precedence

hello,
i have a doubt in the order in which a sql query will execute.
when there are joins and where conditions in an sql query, which would be executed first? the joins or the where conditions??
Regards,
Roopa.

you can generate an execution plan and read it to see how Oracle intends to execute a query, something like
SELECT STATEMENT     ALL_ROWS
SORT(AGGREGATE)
     HASH JOIN
       INDEX(FAST FULL SCAN) FEE_INDX1
       INDEX(FAST FULL SCAN) FIE_INDX1generally you go in as far as you can, then out again so the first one read should be FEE_INDX1, then FIE_INDX1. If other items existed you would then go down to the next operation and repeat the process until you are done.

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Operator Precedence Doubt

public class PrecedenceEx {
     public static int m(int i) {
          System.out.print(i + ", "); return i;
     public static void main(String s[]) {
              m(m(1) - m(2) + m(3) * m(4));
Output is : 1, 2, 3, 4, 11
I used operator precedence and got 3, 4, 1, 2, 11
Why is operator precedence not applicable here.

Operator precedence is applicable.
m(1) + m(2) * m(3)
In the above, precendence does NOT mean that m(2)*m(3) is executed before m(1). Expressions are evaluated left to right. Precedence simply means that the * binds more tightly than the +, so that it's like
m(1) + ((m(2) * m(3))
rather than
(m(1) + m(2)) * m(3).
So m(1) is evaluated first, then m(2), then m(3), then the results of m(2) * m(3) are computed, and the result of that is added to the m(1) that was computed previously.

Price condition precedence

Hi,
We have two Price condition types in a pricing procedure
1) ZPRO
2) ZP01
When a condition record is found in ZP01, it takes precedence over condition type ZPRO.
Is there any way we could configure this other than condition exclusion functionality ?
Regards,
Pavan

Pavan,
Maintain your ZP01 as the main condition for reference to any thing. Make the other one as statistical purpose only.
Now the main step is maintain an alternative formula for ZP01 condition, here in the formula check whether a condition record was found for ZP01, if not copy the condition record of the condition type ZPRO.
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Don't forget to reward points if useful.
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I have Windows Server 2008 R2 and GPOXX with settings about Security Zones and run normally.
I need create another GPOYY with settings about Security Zones different than GPOXX.
My doubt is: When I create GPOYY and my settings won't occur conflict in my GPOXX? I don't can problem in my environment production in my GPOXX.
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Hi,
>>My doubt is: When I create GPOYY and my settings won't occur conflict in my GPOXX?
As long as the settings we configure don't conflict with each other, there won't be conflict between GPOs. If the setting in GPOYY and GPOXX conflict with each other, saying we enable a setting in the former GPO and disable the same setting in the latter
GPO, then there will be conflict and the GPO processed at last will be the winning GPO for applying the setting.
Regarding group policy precedence, the following article can be referred to for more information.
Group Policy processing and precedence
http://technet.microsoft.com/en-us/library/cc785665(v=ws.10).aspx
Best regards,
Frank Shen

Operator precedence

Hello,
I was going through someone else's code today, and found something I didn't quite understand. The code fragment is as follows:
 for (int j = 0; j < count / 2; j++)
 k = j + 1;
 for (m = 0; m < height; m++)
 for (n = 0; n < width; n++)
 arrayOfInt[j][(m * width + n)] = imgpixels[(m / k * k)][(n / k * k)];
 (snip)
 }Now, most of it, I think I understand, apart from the line:
arrayOfInt[j][(m * this.width + n)] = imgpixels[(m / k * k)][(n / k * k)];
- how is Java interpreting the algebra in the square brackets? For the first set of square brackets, is it [m/(k*k)] or is it [m*k/k]? This latter one doesn't make any sense, as the k's would cancel leaving just m.
I've looked at precedence of the operators and found that *, / and % are given equal precedence, so what is going on here?

875465 wrote:
- how is Java interpreting the algebra in the square brackets? For the first set of square brackets, is it [m/(k*k)] or is it [m*k/k]? This latter one doesn't make any sense...Probably because it isn't possible.
Java will never re-order operators, it will only use predecence to evaluate one set before another, so in the case above the only two possible interpretations are:
<tt>(m / k) * k</tt> or
<tt> m / (k * k)</tt>
In fact it will use the first, because * and / have the same precedence, so evaluation works from left to right, which indeed looks like a roundabout way of saying 'm'.
However, since we don't know what the types of n, m, and k are, it's difficult to speculate what the effects are; it could also be a roundabout way of saying 'nearest multiple of k'.
On the other hand, it could also be
1. It's a horrible piece of code (my opinion).
2. They actually intended it to be <tt> m / (k * k)</tt>.
Which is why it's usually a good idea to explicitly bracket your code and remove all doubt. The only place that sort of stuff belongs is in SCJP tests.
Winston

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hi i have a doubt....
in fbl1n transaction, there are open items and cleared items.
in it the cleared items for certain document types such as invoice etc is not present in the open item table (bsik)
however the cleared items for document types such as general voucher its present in the open items table (bsik)
is this possible as all cleared item entries shld b present in the open item table with an indicator set for cleared or not...
plz exlain!

Hi
There are 2 tables(open and Closed Items) in FI for Account Payables and Account Receivables and GL accounts
1.Account payables: BSIK is Open Items and BSAK is Closed items
2.Account Receivables; BSID and BSAD for OPEN and closed items
3/GL accounts : BSIS and BSAS for Open and Closed Items
Reward points for useful Answers
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Anji

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Edited by: kevin liang on Oct 19, 2009 6:45 AM

Hi,
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Small Doubt Regarding SY-MANDT

Hi All,
     SELECT changenr FROM cdhdr CLIENT SPECIFIED INTO CORRESPONDING FIELDS OF TABLE it_cdhdr
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                                         AND   objectclas = 'MATERIAL'
                                         AND   objectid   = wa_matl-matnr
                                         AND   tcode      = 'MM02'.
     I have written the select stament as shown above.
     In this i have a doubt like adding a field sy-mandt in the where condition will increase the Efficiency of program or not.
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raghu.

Hi..
No doubt the efficency would be affected but from business point of view there will many things that need to be checked as in:
If you are viewing data from CDHDR and CDPOS which is client specific then you are not viewing complete data.
These tables give us and document changes made to a particular object in SAP but if anything is cross client like company code(lets assume) then changes to it wont be visible in all the clients..
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Hi, i've had a couple of doubts for a long while which I hope someone can clarify today:
1) I know how to use the AT statements, however, i'm not sure I get correctly what this part of help regarding this commands means:
"The control level structure with internal tables is static. It corresponds exactly to the sequence of columns in the internal table (from left to right). In this context, the criteria according to which you sort the internal table are unimportant."
I've always sorted the internal table before the control break and it works that way. For example:
SORT ITAB BY EBELN EBELP.
LOOP AT ITAB.
AT NEW EBELN.
* Code for the order header
ENDAT.
ENDLOOP.
If I don't sort the internal table, it doesn't work! (i get dupplicated processing). In the example, if i have more than one register with the same EBELN and they're not consecutive, the header gets processed twice. I really don't get that part of the help text.
2) I know this: "At the start of a new control level (i.e. immediately after AT), the following occurs in the output area of the current LOOP statement:
All character type fields (on the right) are filled with "*" after the current control level key.
All other fields (on the right) are set to their initial values after the current control level key."
My doubt is: WHY is that this way? Because sometimes (most times) I need those fields INSIDE the statement! So when that happened i've solved it in one of three ways:
LOOP AT ITAB INTO WA_ITAB.
WA_ITAB_AUX = WA_ITAB.
AT NEW FIELD.
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* ...Rest of the code for the first register
ENDAT.
ENDLOOP.
LOOP AT ITAB INTO WA_ITAB.
AT NEW FIELD.
 READ TABLE ITAB INDEX SY-TABIX INTO WA_ITAB.
* ...Rest of the code for the first register
ENDAT.
ENDLOOP.
* (Without AT)
LOOP AT ITAB INTO WA_ITAB.
IF WA_ITAB-FIELD <> FIELD_AUX.
 FIELD_AUX = WA_ITAB_FIELD.
* ...Rest of the code for the first register
ENDIF.
ENDLOOP.
Is there any problem with this way of coding? Can be done better?
Thank you very much in advance.

Hi..,
1)
See if u sort the table on a field on which u r using AT ENDAT .. then all the records which are having the same value for that field will form a group or those reocrds will be at one place.. so when u sort the table for all the records AT ENDAT will get executed onli once..
If u dont sort this table on this field then all these records will be at different places and in between there may be records with different value for this field.. so this AT ENDAT will get executed for each record !!
2)
No u cannot use the Right hand fields of the field in the table .. Because these AT events work as Group based operations... So till that field on which AT ENDAT is working it breaks that record into two groups.. One is the left hand fields including that field.. and right hand fields as another group.. and makes the right hand group as stars ****. Thats y u can observe that even any one field in the left hand group changes the AT ENDAT will get executed !!!!
Hope u understood !!!
regards,
sai ramesh

LOOP DOUBT INSIDE PACKAGE

CREATE PACKAGE EMP_PKG AS
CURSOR EMP_CUR IS
SELECT EMPNO,DEPTNO,SAL,HIREDATE
FROM EMP
WHERE DEPTNO=30;
PROCEDURE P_EMP;
PROCEDURE P_GET_SAL(V_EMPNO NUMBER);
PROCEDURE P_GET_LOC(V_EMPNO NUMBER);
Now inside my Package Body
INSIDE THE MAINPROCEDURE P_EMP
I WILL BE CALLING THE BELOW TWO PROCEDURES
PROCEDURE P_EMP
BEGIN
FOR I IN EMP_CUR LOOP
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NOW WHAT IAM DOING IS
in my P_GET_SAL Procedure is
PROCEDURE P_GET_SAL(V_EMPNO NUMBER)
V_SAL EMP.SAL%TYPE;
BEGIN
FOR I IN EMP_CUR LOOP
SELECT SAL INTO V_SAL FROM EMP
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I WANT TO KNOW WHETHER I NEED TO LOOP AGAIN
HERE OR INSTEAD OF THAT
PROCEDURE P_GET_SAL(V_EMPNO NUMBER)
V_SAL EMP.SAL%TYPE;
BEGIN
SELECT SAL INTO V_SAL FROM EMP
WHERE EMPNO =V_EMPNO;
END;
SINCE iam calling V_EMPNO WITH CURSOR FROM MY
MAINPROCEDURE ..
WILL THE PROCEDURE USES THE CURSOR VALUES
AND LOOP ITSELF FOR EVERY EMPLOYEE TO
GET THE SALALRY ?
PLEASE LET ME KNOW SINCE MY PACKAGE IS MORE THAN 3000
LINES I cant proceed unless its confirmed i can
do so ..

Hi all,
Thanks for Looking into my Problem
I Got answer by MySelf ..i dont need to loop again my sub procedures
if i try to do that iam getting the error
ERROR at line 1:
ORA-06511: PL/SQL: cursor already open
Thank you all once again ..

Doubt on Rows and Coloums in BEx Query Designer.

Hello, Experts.
I have a Doubt in BEx Query Designer.
In the Rows I have a Fiscal year Period, if the user enters the Fiscal year period for e.g. : 001/2006 .
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Thanks in Advance .
Sharp

yes i am Doing Offest.
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AND OR precedence in JOIN ON condition

Hi Guys,
I have a small operator precedence problem.
the last part of my LEFT OUTER JOIN clause looks like this:
ON bsch.key# = aknl.key# AND aknl.month = bsch.month
The above works fine, but there are some cases that need an addition
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Edited by: metalray on 23.05.2012 02:03

It looks like you want
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and if you don't want the default precedence, just use ()
Sybrand Bakker
Senior Oracle DBA

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Doubt in precedence

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