Doubt on SAMPLE clause in SELECT statment

Hi all,
I am having table with rows of 41. I issued a statement like this
select * from TABLE_NAME SAMPLE(10);
and it selected 3 rows (it is varying) . Everytime, i issued this statement, it is
fetching different number of rows.
Can anybody please explain what is the basis for it and what is the best
option to select rows randomly.
Thanks in advance,
Pal

Thanks for your reply.
Everytime, the selected rows are different sometimes only one record, sometimes
three, sometimes 7 recoreds, and sometimes 4 records like that.
So i didnot understand what is going on inside of this query.
Thanks,
Pal

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SELECT STATMENT USING JOINS OF 2 TABLE WITH UPT 200 ROWS

Hi
     Any give me sample code for select statment'' SELECT STATMENT USING JOINS OF 2 TABLE WITH UPT 200 ROWS''.
Thanks in advance .
regards
veera

tables : mara.
data : begin of itab occurs 0,
       matnr like mara-matnr,
       maktx like makt-maktx,
       end of itab.
start-of-selection.
select amatnr bmaktx into table itab up to 200 rows
        from mara as a inner join makt as b on bmatnr = amatnr.

Select statment - where clause

Hello experts,
I want to write a select statment,
e.g.
select * from pa0001 where ename like '%Rahul%'.
so this stamemt will give me all DB rows in which ename contains Rahul but i also want rows those are having rahul or rAhul or raHul or RAhul or RAHul or RaHul like wise....
can u plz help me on this ???

Hi
Find the below code which may be useful for your requirement
ranges:r_sel for lfa1-name1.
data:v_name(5) type c value 'laxmi'.
data:len type i,
v_num type i,
v_num1 type i,
v_num2 type i,
v_name1(5) type c,
v_name2(5) type c,
v_name_final(7) type c,
v_char type c.
len = strlen( v_name ).
clear:v_name1,v_name2,v_name_final,v_num,v_num1,v_num2.
v_num1 = len.
do len times.
v_num1 = v_num1 - 1.
v_char = v_name+v_num(1).
v_num2 = v_num.
v_num = v_num + 1.
if v_num1 is initial.
    clear:v_name1.
else.
    v_name1 = v_name+v_num(v_num1).
endif.
if v_num2 is not initial.
    v_name2 = v_name+0(v_num2).
endif.
translate v_char to upper case.
concatenate '' v_name2 v_char v_name1 '' into v_name_final.
r_sel-option = 'CP'.
r_sel-sign = 'I'.
r_sel-low = v_name_final.
clear:r_sel-high.
append r_sel.
translate v_char to lower case.
concatenate '' v_name2 v_char v_name1 '' into v_name_final.
r_sel-option = 'CP'.
r_sel-sign = 'I'.
r_sel-low = v_name_final.
clear:r_sel-high.
append r_sel.
enddo.
Use range parameter in your select statement.
Regards
Sripal

Query in select statment

Hi ,
what is the difference between,select single and
select upto one row .
In a select statment .
Thanks ,
shankar.

According to SAP Performance course the SELECT UP TO 1 ROWS is faster than SELECT SINGLE because you are not
using all the primary key fields.
select single is a construct designed to read database records with primary key. In the absence of the primary key,
it might end up doing a sequential search, whereas the select up to 1 rows may assume that there is no primary key
supplied and will try to find most suitable index.
The best way to find out is through sql trace or runtime analysis.
Use "select up to 1 rows" only if you are sure that all the records returned will have the same value for the field(s)
you are interested in. If not, you will be reading only the first record which matches the criteria, but may be the
second or the third record has the value you are looking for.
The System test result showed that the variant Single * takes less time than Up to 1 rows as there is an additional
level for COUNT STOP KEY for SELECT ENDSELECT UP TO 1 ROWS.
The 'SELECT SINGLE' statement selects the first row in the database that it finds that fulfils the 'WHERE' clause
If this results in multiple records then only the first one will be returned and therefore may not be unique.
Mainly: to read data from
The 'SELECT .... UP TO 1 ROWS' statement is subtly different. The database selects all of the relevant records that
are defined by the WHERE clause, applies any aggregate, ordering or grouping functions to them and then returns
the first record of the result set.
Mainly: to check if entries exist.
You can refer to the below link..
http://www.sap-img.com/abap/difference-between-select-single-and-select-upto-one-rows.htm

Using distinct and orderby in the select statment

Hi All,
Can anyone tell me what is the purpose of using distinct and orderby in the select statment.

Hi,
Using the distinct function with more than one column yields some substantial results. SQL will return the rows with distinct or unique combinations of those columns. Assume this same employee table has another column including the salary of each employee. With the use of the distinct function we can pull a list of unique job titles - salaries.
SQL Code:
SELECT DISTINCT job_titles, salary FROM employees;
SQL has returned all the rows with unique combinations of job titles and salaries. Any duplicate combinations of job titles and salaries will be ignored. For example if we had two CEOs in the table making the same salary each year, only one row would be returned but if we had two CEOs with different salaries, both rows would be returned.
Order by
The SQL ORDER BY clause comes in handy when you want to sort your SQL result sets by some column(s). For example if you want to select all the persons from the already familiar Customers table and order the result by date of birth, you will use the following statement:
SELECT * FROM Customers
ORDER BY DOB
As you can see the rows are sorted in ascending order by the DOB column, but what if you want to sort them in descending order? To do that you will have to add the DESC SQL keyword after your SQL ORDER BY clause:
SELECT * FROM Customers
ORDER BY DOB DESC
If you don't specify how to order your rows, alphabetically or reverse, than the result set is ordered alphabetically, hence the following to SQL expressions produce the same result:
SELECT * FROM Customers
ORDER BY DOB
SELECT * FROM Customers
ORDER BY DOB ASC
You can sort your result set by more than one column by specifying those columns in the SQL ORDER BY list. The following SQL expression will order by DOB and LastName:
SELECT * FROM Customers
ORDER BY DOB, LastName
if its useful reward points

Problem in select statment & loop of itab.

Hi all,
      I am having on ITAB1 for, ex which is having five line items or more .
iam also using select statment SINGLE statment for 7 times ,to select values for
different data base table.
for ex,
loop at itab.
   1---> SELECT SINGLE Z_CTRY_ORIG INTO LS_PSHDESN-Z_CTRY_ORIG FROM ZLE_PART_MST
WHERE                           WERKS        = ITAB1-LGNUM
AND                                 MATNR        = ITAB1-MATNR .
2---
3---
4---
endloop
i want to remove from the loop statment and i have to select the datas ..
can any one sugesset some possible ways....
regards
veera

hi,
Solution:
Never use select single in loop at itab!! for that :
Solution 1:
say ur main table is ITAB and rferring this u want to select data from other tables.
SELECT SINGLE Z_CTRY_ORIG INTO LS_PSHDESN-Z_CTRY_ORIG FROM ZLE_PART_MST
into table itab2
FOR ALL ENTRIES IN ITAB
WHERE WERKS = ITAB-LGNUM
AND MATNR = ITAB-MATNR.
With this what will hapeen , u will get all records in itab2 which u can update itab1(master) using loop.
solution 2:
Instead of all this use JOINs in select statement properly and u can fetch data in one shot this will reduce database load as well as abap load ( More than 3 joins in SELECT stmt are not recommeded but can be used)
I believe this is perfect solution if and only if u are giving joins on KEY fields only. Same is applied for wherer clause.
Hope this will help u, if not revert.
Jogdand M B

How does "SELECT" statment work?

Hi,
Correct me if I'm wrong.
Data selected by SELECT statement (without ORDER BY) is unordered and sequence of selected lines may differ every time you execute the same SELECT.
My problem is that data on a production system has been always selected ordered ( without ORDER BY) and suddenly it changes and the rows of a result set are unordered.
It's also strange for me that it works differently on a test system and data is selected ordered ( the code is the same on both systems ).
Two questions:
1. How is it possible that data was always selected ordered? (the only answer which comes to my head is "LUCK" )
2. What has happened that data is now selected unordered? (and works as SELECT statment should work by definition)
Thanks for any ideas,
Mario

Hello,
I see there is an equality 3-3 in the match here, between
1) those who are for "it's ordered" (Rodrigo Ariel G..., Danish2285, pavankumar.g)
2) and those "it's not ordered" (Diwakar Aggarwal, Keshav.T, Matt).
So I'd like to play too :-D and my answer is "it's not ordered" (with Diwakar Aggarwal, Keshav.T, Matt).
now 3-4
My advice is: always trust the SAP documentation when it's said explicitly (I'm aware that the arguments or context are sometimes missing, so a confirmation is then needed).
You'll find it also in the wikipedia for SQL article (http://en.wikipedia.org/wiki/SQL#Queries): "The ORDER BY clause identifies which columns are used to sort the resulting data, and in which direction they should be sorted (options are ascending or descending). Without an ORDER BY clause, the order of rows returned by an SQL query is undefined."
Oracle SQL Reference, in the Query Optimizer section (http://download.oracle.com/docs/cd/B14117_01/server.101/b10752/optimops.htm#35891) : "If data must be sorted by order, then use the ORDER BY clause, and do not rely on an index. If an index can be used to satisfy an ORDER BY clause, then the optimizer uses this option and avoids a sort."
In fact, this is logic when we know how RDBMS are built, all this is about the selection of the access path to get the data (that we see with the explain plan, the path depends especially on what the database contains, that is different between test and production), the faster way to do things (an ordering is not always required, so why the RDBMS would spend time to organize it)
Don't we have this question in the Forum's FAQ by the way?
Sandra

Performace problem in a select statment how to imporve the performance

fist select statment
SELECT    a~extno
          a~guid_lclic       " for next select
          e~ctsim
          e~ctsex
*revised spec 3rd
          f~guid_pobj
          f~amnt_flt
          f~amcur
          f~guid_mobj
          e~srvll     "pk
          e~ctsty     "PK
          e~lgreg "PK
INTO TABLE gt_sagmeld
FROM /SAPSLL/LCLIC as a
INNER JOIN /sapsll/tlegsv as e on elgreg = algreg
* revised spec 3rd
inner join /sapsll/legcon as f on fguid_lclic = aguid_lclic   " for ccngn1 selection
inner join /sapsll/corcts as g on gguid_pobj = fguid_pobj
                           where   a~extno in s_extno.
sort gt_sagmeld by guid_lclic guid_pobj.
lgreg ctsty srvll
delete adjacent duplicates from gt_sagmeld comparing guid_lclic guid_pobj.
it selects about 20 lakh records
belos select statment whichs is taking time as it is based on the entreis of gt_sagmeld
select /sapsll/corpar~guid_mobj
            /sapsll/corpar~PAFCT
            but000~bpext
            but000~partner
            /sapsll/corpar~parno
            into table gt_but001
    from    /sapsll/corpar
    INNER join but000 on but000partner = /sapsll/corparparno
    for all entries in gt_sagmeld
    where /sapsll/corpar~guid_mobj = gt_sagmeld-guid_mobj
    and    /sapsll/corpar~PAFCT = 'SH'.
   SELECT /sapsll/cuit~guid_cuit         " PK
          /sapsll/cuit~QUANT_FLT         " to be displayed
          /sapsll/cuit~QUAUM             " to be displayed
          /sapsll/cuit~RPTDT             " to be displayed
         /sapsll/cuhd~guid_cuhd         " next select
          /sapsll/cuit~guid_pr           " next select
INTO table gt_sapsllcuit
FROM /sapsll/cuit
inner join /sapsll/cuhd on /sapsll/cuitguid_cuhd = /sapsll/cuhdguid_cuhd
FOR all entries in gt_sagmeld
WHERE /sapsll/cuit~guid_cuit = gt_sagmeld-guid_pobj.
Delete adjacent duplicates from gt_sapsllcuit[].
       if not gt_sapsllcuit[] is initial.

hi navenet
that didnt worked
we need to try ur range options
but not sure what you told in the last mail as not clear with range can u pls eloboragte more i am pasting the full code here
SELECT     a~extno
           a~guid_lclic       " for next select but000
           e~ctsim
           e~ctsex
           e~srvll
           e~ctsty
           e~lgreg
INTO TABLE gt_sagmeld
FROM /SAPSLL/LCLIC as a
INNER JOIN /sapsll/tlegsv as e on elgreg = algreg
                           where   a~extno in s_extno.
sort gt_sagmeld by guid_lclic.
delete adjacent duplicates from gt_sagmeld comparing all fields.
IF not gt_sagmeld[] is initial.
SELECT /sapsll/legcon~guid_lclic
          /sapsll/legcon~guid_pobj
          /sapsll/legcon~amnt_flt
          /sapsll/legcon~amcur
           but000~bpext
           *revised spec
           /sapsll/corpar~PAFCT
          /sapsll/legcon~guid_mobj
         /sapsll/cuit~guid_cuit
INTO TABLE gt_but000
FROM /SAPSLL/LEGCON
for all entries in gt_sagmeld
where /SAPSLL/legcon~guid_lclic = gt_sagmeld-guid_lclic.
        IF NOT GT_BUT000[] IS INITIAL.
       sort gt_but000 by guid_mobj.
       delete adjacent duplicates from gt_but000 comparing guid_mobj.
     select /sapsll/corpar~guid_mobj
            /sapsll/corpar~PAFCT
            /sapsll/corpar~parno
            into table gt_but001
    from    /sapsll/corpar
    for all entries in gt_but000
    where /sapsll/corpar~guid_mobj = gt_but000-guid_mobj.
   and    /sapsll/corpar~PAFCT = 'SH'.
DELETE gt_but001 where PAFCT <> 'SH'.
*sort gt_corpar by parno.
*delete adjacent duplicates from gt_corpar comparing parno.
*select gd000~partner
      gd000~bpext
     from gd000 into table gt_but001
for all entries in gt_corpar
where gd000~partner = gt_corpar-parno.
my ultimat aim is to select bpext from gd000
can u please explain how to use ranges here and what is the singnificance and how ill i read the data from the final table if we use ranges
regards
Nishant

Sample-function in select-statement

hello,
i have a sql statement to get 10% of the cutomers using the sample function:
select count(*) from
(select * from L_CUST sample(10));
The table C_CUST contains 1800001 rows.
if i execute the given statement, the resulut number of rows are different in range 1000
1800001 * 0.10 = 180000
if the number of rows differs between 0 and 2 record, its ok, but 1000 is to mutch.
hast anyone an idea?

If you read the documentation you will see that Oracle selects a random sample. It's the random part that's obviously confusing you. A 10% sample does not select every 10th row. Rather it says for each row there's a 1 in 10 chance of that row being selected. It's just like flipping a coin, only with ten values rather than two.
If you are really bothered by this try...
SELECT * FROM
( SELECT rownum as rn, a.* FROM
( SELECT * FROM your_table
ORDER BY dbms_random.random ) a )
WHERE mod(rn, 10) = 0
/Cheers, APC
Cheers, APC

How to put OR clause in SELECT statement

Hi
How to put OR clause in SELECT statement to return number_first/number_last to match records from another table's column.
<pre>
SELECT
a.id ,
flat_number ||' '|| a.number_first||' '||a.street_name||' '||a.suburb address1,
apt_no ||' '|| street_no||' '||b.street_name||' '||b.suburb address2
from
a ,
b
where b.street_name = a.street_name
AND b.SUBURB = a.SUBURB
AND b.STATE = a.STATE
</pre>
Thsi will return this as exact match.
ADDRESS 1
12 TAMAN TENANG A ORCHARD 3142
10 RAMA YISHUN 2095
ADDRESS2
12 TAMAN TENANG A ORCHARD 3142
10 RAMA YISHUN 2095
However this only matches number_first.
How can I get the query work that it will match both number_first and number_last (table b)in address 1 to match street_no in address2 ( table b).My oracle version is 10GR/2.

Hi, I have a hard time understanding your request, and below is what I thought you want:
SELECT
    a.id ,
       flat_number ||' '|| (decode(b.street_no, a.number_first, a.number_first, a.number_last, a.number_last)||' '||a.street_name||' '||a.suburb address1,
         apt_no ||' '|| street_no||' '||b.street_name||' '||b.suburb address2
      from
             a ,
             b
            where          b.street_name = a.street_name
             AND            b.SUBURB      = a.SUBURB
            AND            b.STATE       = a.STATE
            AND (B.street_no=a.number_first OR b.street_no=a.number_last);Not tested.
Also, since your B.street_no will be either a.number_first OR a.number_last, you could replace
(decode(b.street_no, a.number_first, a.number_first, a.number_last, a.number_last) with just b.street_no.
Edited by: PhoenixBai on Aug 26, 2010 11:33 AM

Select statment - fill internal table

Hi,
I have following situation:
TYPES: BEGIN OF q_data,
         i_lqua LIKE lqua,
         v_xxx(20) type c,
       END OF q_data.
DATA: a_data TYPE STANDARD TABLE OF q_data.
Now I would write a select statment and fill the table a_data.
select lqua~matnr lqua~werks... from lqua inner join mch1 into (i_lqua-matnr, i_lqua-werks.....)...
Is it possible to write a statement without writing the whole structure (all the names of columns) of lqua in the SQL-statement (lquamatnr lquawerks lqua~........)?
Thanks
Michael

1. you can write that but i think you have to write that in SELECT ...ENDSELECT.
select lquamatnr lquawerks... from lqua inner join mch1 into (i_lqua-matnr, i_lqua-werks.....
append i_lqua.
endselect.
2. OR you can use INTO CORRESPONDING FIELDS OF TABLE
   select lquamatnr lquawerks... from lqua inner join mch1 into corresponding fields of table i_lqua.

WHERE clause in SELECT statement

hi experts..
i want to give 'OR' condition in the 'where' clause of 'SELECT' statement.
is it possible?
for examlpe..
IF EXIDV2 IS NOT INITIAL.
   SELECT * FROM YSDT_SHIPLOAD
            INTO TABLE IG_SHIPLOAD
            WHERE EXIDV2 = EXIDV2 AND
                         VHILM = PC1 OR PC2 OR PC3.
ENDIF.
i want that VHILM should be one of those three.
how can i do this?
thanks..

Hi ,
its possible,
Select * from ysdt_shipload int table ig_shipload where exidv2 = exidv2
                                                                        AND vhilm = pc1
                                                                        OR     vhilm = pc2
                                                                         OR   vhilm = pc3.
OR
Select * from ysdt_shipload int table ig_shipload where exidv2 = exidv2
                    AND (vhilm = pc1 or vhilm = pc2 or vhilm = pc3).
Regards
Arani Bhaskar
Edited by: arani bhaskar on Mar 16, 2009 5:14 PM

Regarding dynamically assigning the where clause to select query

hi,
Please send the code regarding how to dynamically assign the where clause to select query.
thanks in advance

SELECT <fileds>
        INTO TABLE itab
        FROM dbase
        WHERE condition.

Select statment Query

Hi,
I am devloping Query with the table DBERCHZ1
it having two fields
    V_ ABRMENGE        value 456
   N_ ABRMENGE        value   0.67899
Here i want to print as 456.67899 with one select statment.
is any way to sum in select statment.
Thanks

Hi,
I have just given a code snippet similar to your requirement.
DATA:   average TYPE p DECIMALS 2,
        sum     TYPE p DECIMALS 2.
SELECT AVG( luggweight ) SUM( luggweight )
INTO (average, sum)
FROM sbook.
WRITE: / 'Average:', average,
       / 'Sum    :', sum.
Just replace with your variables and let me know if it works.
Thanks,
Harini

Dynamic field in select statment.

Hello,
I created a report in which i have two checkboxes in the selection screen. The first checkbox is for the option to bring or not, initial purchase requisitions (BANFN) from EKPO and the second is to bring initial or not, RFQs
(ANFNR). I want the select statment to have this form:
select ...
from ekpo
into g_table
where ..
and dynamic field = " ".
Can this be done ?
i tried to put it as a string but it didnt work. (data: dynamic field type string value "EKPO-BANFN")
P.S i know that it can be by writing the same select code twice.
I just wonder if this can be done by this way
\Regards.

Hey Nick,
I have more conditions than the one i said before , should all be in the lv_where_clause ?
check my code.
DATA: G_CHBFLD type STRING.
G_CHBFLD = 'P~BANFN = '' " '.
FORM SELECT_DATA_EKPO_EKKO.
SELECT .....
      FROM EKPO AS P INNER JOIN EKKO AS K
        ON PEBELN = KEBELN
          INTO CORRESPONDING FIELDS OF TABLE GT_EKPOEKKO
            WHERE K~EBELN IN S_EBELN
            AND K~AEDAT IN S_AEDAT
            AND K~BSTYP IN S_BSTYP
            and ( G_CHBFLD ) .   -
> //DEBUGER ")" is not a valid comparison operator. comparison operator.

Doubt on SAMPLE clause in SELECT statment

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