Select only some rows

Hi all,
I've a query with more than 500 rows as result. I'm only interested to show the first 50 rows. Did you know any way to prepare the select sentence to do it? I prefer avoid use cursors to do that.
Regards,
dbajug

Hitesh Nirkhey wrote:
hi
use ROWNUM keyword for fetching first 50 rows
simplest example
select * from emp
where rownum < 5 ;
regards
HiteshROWNUM applies to the rows after they are collected into a result set. Thus, it may, or may not, fulfill the OP's requirements. He still needs to define what he means by "first 5 rows".
http://psoug.org/reference/pseudocols.html
Also see description of ROWNUM in the fine SQL Reference manual

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ALV - how to make selectable only some rows on an ALV?

Hi my problem is:
I have an ALV GRID as output of a report.
I have to make selectable only few rows based on the contents of a field (showed in a column in the ALV).
Is it possible?
Best Regards, Vincenzo

I did understand, but as i told you there is nothing like that, neither an option nor an event to capture.
Here is the documentation: http://help.sap.com/saphelp_erp2005vp/helpdata/EN/bf/3bd1369f2d280ee10000009b38f889/frameset.htm
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Selecting only one row at a time

Hi experts,
i have following doubt regarding selecting rows from a db:
Is there any way of selecting only one row AT A TIME from a dabase just to collect the data in rows instead of in a unique document containing all the rows?
I would like you to ellaborate on this as i need to send only one row to the IE, and then other row, and so on... without throwing any error!
I have seen that there are SELECT SINGLE and SELECT UP TO 1 ROW, but these two methods are only useful when retrieving only one row, and that does not match my requirements. I need to process all the rows but one by one..
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Hope i had explained well..
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David

Hi kiran,
Yes, my table has 5 not null fields but i am selecting and updating fixes values so i think that I will definetely go for the next solution:
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David

Only some rows selectable

Hi,
I wonder if anybody could help me in my problem?
I made a table and would like only some of the rows to be selectable. Is this possible?
The best solution would be to hide those squares on the left of the rows.
Thanks in advance for your help.
Piotrek
Edited by: Piotr Kondratowicz on Feb 10, 2009 4:29 PM

Hi Piotr,
Create a value attribute of type boolean(Ex: ed) and assign it to all editable fields of the table.
Based on a condition enable(ed=true)/disable(ed=false) the row fields as read only.Which will fulfill your requirement.
Thanks & Regards,
Jhansi Miryala

How to edit only some rows in ALV

Hi Experts,
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Hi,
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append it_chg.
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L_POS = L_POS + 1.
**fieldcatalog
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Counting only some rows without where or subqueries?

Is it possible with oracle to count only some of the rows? I mean without excluding the rows in where or using sub queries.
This does not work but I think it illustrates what I want:
SELECT count(flags), count(flags like '%P%'), count(flags like '%F%') FROM table WHERE some_column = 2;
Where the first would return the number of flags rows, while the second contet the numbers that have P in them and the third counted the number with F.
Table would be
Flags Some_column
'AFP' 2
'A* 1
'PF' 1
'P' 2
And so on.
In postgres you can do: count(substring(flags from 'R')), to achieve the above mentioned idea. Does oracle have a way of doing the same?

Your requirement is not clear. But.. Is this what you are trying to achieve?
SQL> with t
2 as
3 (select 'AFP' st from dual
4 union all
5 select 'A*' from dual
6 union all
7 select 'PF' from dual
8 union all
9 select 'P' from dual
10 )
11 select sum(1) sum1,
12 sum(case when st like '%P%' then 1 else 0 end) sum2,
13 sum(case when st like '%F%' then 1 else 0 end) sum3
14 from t
15 /
SUM1 SUM2 SUM3
4 3 2

Download link for only some rows

Hi,
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The tables are linked by product_id.
I would like to display a report that shows all the column from the products table and a download link for only those products that have an image.
So far the query only returns those rows that have an image.
Thanks
Edited by: user12970007 on 20-Apr-2010 17:59

What does this query look like?

Oracle database link to MySQL select only one row

Hello,
I have created a connection from the Oracle batabase 11.2 to a MySQL database via database link. The following statement shows, that 35 rows are in the mySQL table:
SQL> select count(*) from "main_pages"@MOREWEB;
COUNT(*)
        35
But a normal select statement only return 1 row.
SQL> select "subject" from "main_pages"@MOREWEB;
subject
Übersicht: Referenzen
I am using the mysql-connector-odbc-3.51.30-winx64 driver. A newer version cann't be installed because on Windows Server 2008 R2 I get an error with an missing dll-file. The DataDirect-ODBC-driver is not possible, because we like to use the free MySQL-database an DataDirect only support the enterprise edition.
I also have tried to limit the HS_OPEN_CURSORS or dont limit the HS_FDS_FETCH_ROWS, but there is no difference in the result. I always get only one row.
HS Init.ora
# This is a sample agent init file that contains the HS parameters that are
# needed for the Database Gateway for ODBC
# HS init parameters
HS_FDS_CONNECT_INFO = moreweb
HS_FDS_TRACE_LEVEL = ON
HS_FDS_FETCH_ROWS=1
# Environment variables required for the non-Oracle system
#set <envvar>=<value>
HS tracefile
Oracle Corporation --- MITTWOCH   NOV 05 2014 13:56:22.066
Heterogeneous Agent Release
11.2.0.1.0
Oracle Corporation --- MITTWOCH   NOV 05 2014 13:56:22.066
    Version 11.2.0.1.0
HOSGIP for "HS_FDS_TRACE_LEVEL" returned "ON"
HOSGIP for "HS_OPEN_CURSORS" returned "50"
HOSGIP for "HS_FDS_FETCH_ROWS" returned "1"
HOSGIP for "HS_LONG_PIECE_TRANSFER_SIZE" returned "65536"
HOSGIP for "HS_NLS_NUMERIC_CHARACTER" returned ".,"
HOSGIP for "HS_KEEP_REMOTE_COLUMN_SIZE" returned "OFF"
HOSGIP for "HS_FDS_DELAYED_OPEN" returned "TRUE"
HOSGIP for "HS_FDS_WORKAROUNDS" returned "0"
HOSGIP for "HS_FDS_MBCS_TO_GRAPHIC" returned "FALSE"
HOSGIP for "HS_FDS_GRAPHIC_TO_MBCS" returned "FALSE"
HOSGIP for "HS_FDS_RECOVERY_ACCOUNT" returned "RECOVER"
HOSGIP for "HS_FDS_TRANSACTION_LOG" returned "HS_TRANSACTION_LOG"
HOSGIP for "HS_FDS_TIMESTAMP_MAPPING" returned "DATE"
HOSGIP for "HS_FDS_DATE_MAPPING" returned "DATE"
HOSGIP for "HS_FDS_CHARACTER_SEMANTICS" returned "FALSE"
HOSGIP for "HS_FDS_MAP_NCHAR" returned "TRUE"
HOSGIP for "HS_FDS_RESULTSET_SUPPORT" returned "FALSE"
HOSGIP for "HS_FDS_RSET_RETURN_ROWCOUNT" returned "FALSE"
HOSGIP for "HS_FDS_PROC_IS_FUNC" returned "FALSE"
HOSGIP for "HS_FDS_REPORT_REAL_AS_DOUBLE" returned "FALSE"
using mpgw as default value for "HS_FDS_DEFAULT_OWNER"
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SQL text from hgopars, id=1, len=36 ...
     00: 53454C45 43542043 4F554E54 282A2920 [SELECT COUNT(*) ]
     10: 46524F4D 20606D61 696E5F70 61676573 [FROM `main_pages]
     20: 60204131                             [` A1]
Deferred open until first fetch.
Performing delayed open.
SQL text from hgopars, id=1, len=40 ...
     00: 53454C45 43542041 312E6073 75626A65 [SELECT A1.`subje]
     10: 63746020 46524F4D 20606D61 696E5F70 [ct` FROM `main_p]
     20: 61676573 60204131                    [ages` A1]
Deferred open until first fetch.
Performing delayed open.
Please can help me someone.
Thanks.
Bianca

mxallen wrote:
Bianca,
If you log directly into MySQL and issue the same query (select "subject" from "main_pages";) what data is returned?
I looks to me that you count is the number of rows in the entire table "main_pages"
while you select is for the data in the "subject" column only.
This seems to indicate that you have just one row in that subject column.
Regards,
Matt
WHAATT?
What do you mean by "just one row in that subject column"?
That makes no sense at all. A row is a row. A column is a part of a row. All rows have all columns, though not all columns of all rows will necessarily have an assigned value. Lacking a WHERE clause to filter rows, any SELECT should return all rows.

Insert to table as select only some values

Hi all,
I have those two table
Table ANAGUTEN
CODI_UTEN NOT NULL NUMBER(5)
NOME_UTEN NOT NULL VARCHAR2(30)
PASS_UTEN NOT NULL VARCHAR2(30)
Table RELAUTENPROF
CODI_PROF NOT NULL NUMBER(5)
CODI_UTEN NOT NULL NUMBER(5)
The problem is that only some records of ANAGUTEN are in RELAUTENPROF, but this is an error.
How can I insert into RELAUTENPROF only the record (the field CODI_UTEN) that are in ANAGUTEN and that aren't into Relautenprof.
Is there a single statment to do this. I wouldn't use a pl/sql procedure
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Thank's and sorry for the simple question
Paolo

Here's three, I can think of at least three more.
INSERT INTO relautenprof
SELECT 2, codi_uten
FROM anaguten
WHERE codi_uten NOT IN (SELECT codi_uten
                        FROM relautenprof)
INSERT INTO relautenprof
SELECT 2, codi_uten
FROM anaguten a
WHERE NOT EXISTS (SELECT 1
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                  WHERE r.codi_uten = a.codi_uten)
INSERT INTO relautenprof
SELECT 2, codi_uten
FROM (SELECT codi_uten
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      MINUS
      SELECT codi_uten
      FROM anaguten)John

Restricting rights to modify only some rows

Hi,
I just discovered HTML DB and played around with it on myhtmldb.com because htmldb.oracle.com is down for some reason.
Is there a way to restrict write access to some rows of a table for each user? For example everybody can see the whole table but you can only add/delete/modify the rows where your id/company name/.. is present in one column.
Cheers
Mathias

Hi,
I just discovered HTML DB and played around with it
on myhtmldb.com because htmldb.oracle.com is down for
some reason.
Is there a way to restrict write access to some rows
of a table for each user? For example everybody can
see the whole table but you can only
add/delete/modify the rows where your id/company
name/.. is present in one column.
Cheers
Mathias

Select only the row with the latest updatedate

Hi to All !
Can anyone help me with this problem. If I want to select from the existing table:
ROWNUM:UPDATEDATE:NUMBER:UNIT:LOC:ONHAND:DESC:LOTEXP:EXTRACTIONDATE
6     106102     81016     CH9     ADMEIER     2     C4D84M          106104
5     106102     81016     CH9     ADMEIER     2     C4D84M     111030     106103
4     106102     81016     CH9     ADMEIER     2     C4D84M     111030     106102
3     106101     81016     CH9     ADMEIER     4     C4D84M     111030     106100
2     106081     81016     CH9     ADMEIER     0     C4D04Y          106100
1     106073     81016     CH9     ADMEIER     1     A4AU8W          106100
only the rows with the latest updatedate, results in : (row number 3,4,5 have to be out)
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6     106102     81016     CH9     ADMEIER     2     C4D84M          106104
2     106081     81016     CH9     ADMEIER     0     C4D04Y          106100
1     106073     81016     CH9     ADMEIER     1     A4AU8W          106100
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The select for the colums looks like:
UPDATEDATE, NUMBER, UNIT, LOC, ONHAND, DESC, LOTEXP, EXTRACTIONDATE
The table has the following unique key:
UPDATEDATE, NUMBER, UNIT, LOC, LOTEXP, EXTRACTIONDATE
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How to select only one row

hello,
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thank you!
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84A8E46E8C97     9410     20110812
84A8E46E8C97     9420     20110813
84A8E46E8C6E     9410     20110816
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876602 wrote:
my sample of my data as below , the first and seconde record is equal and i want to display all the colomn for the first row and ignore the second rowThere is no row order in relational database tables. Same query canreturn rows in different order next time you run it unless you specify ORDER BY. Only ORDER BY guarantees order, so when you say first row/second row you must provide ordering criteria.
SY.

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Ensure that the Display As Column Attribute for the report column is Standard Report Column.

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