Achieve dynamic pagination with sql query

Hi All,
I want to achieve pagination as you are seeing in this forum.
example:
My query condition satisfies for 100 records. But since i have implement pagination. Assume I am displaying 10 records at a time.
So, First time 10 records will be displayed. And 1,2,3,4...10 will be displayed at top.
When I click at page 2 then my query should fetch 20-30 records. for page 3 it should fetch 30-40. ........
The whole purpose is to achieve pagination without hit on database and without in memory object.
Thanks
Punit

Hi, Punit,
This looks like a revised version of another thread you started:
Problem in fetching rows randomly
Please don't post the same question twice. Mark one of your threads as "Answered" right away, and only continue with the other one.
The solution I posted in your other thread involves running a new query every time you want another page of information. That's very much like the way the "Thread List" on this forum works: it shows, say rows 1 through 15 in order by modification date (descending). If you ask for the next page, it does another query to get rows 16 though 30. If new threads are added between the two queries, then the same item that was #15 in the first query may appear as #16 (or higher) on the second query.
If you want a consistent result set that only executes the base query once, then you have to store the results of the base query, and then show pages from those stored results. Using pure SQL, you could store the results in another table; a Global Temporary Table would probably be best.

Similar Messages

Report region with sql query

Hi
I have a report region with sql query. There are two regions in page. On top of page, user enters data and after that second region show enterd data which is report region
based on sql query.
Now,when this page is opned, as user had not entered any thing, report region shows "no data found" message. Is it possible to remove that message or
may i conditionally disaply report region i.e if data is inserted then only report region is dispalyed.
Thanks

>
i was trying with select count(1) in expression.
>
Just for your info, COUNT() (without any grouping obviously) with always return 1 row. If there are no result for the query then 1 row will be returned with a value of zero - so there are results returned.
Secondly, why were you using COUNT(1) rather than COUNT(*)? That is is faster is a very common misconception and not true. If you need to know how many rows have been returned, use COUNT(*). If you need to take nulls into account (ie. not include them in your count) then use COUNT(column_name) and name the column that you are interested in specifically.
Cheers
Ben

Need help with SQL Query with Inline View + Group by

Hello Gurus,
I would really appreciate your time and effort regarding this query. I have the following data set.
Reference_No---Check_Number---Check_Date--------Description-------------------------------Invoice_Number----------Invoice_Type---Paid_Amount-----Vendor_Number
1234567----------11223-------------- 7/5/2008----------paid for cleaning----------------------44345563------------------I-----------------*20.00*-------------19
1234567----------11223--------------7/5/2008-----------Adjustment for bad quality---------44345563------------------A-----------------10.00------------19
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Please Ignore '----', added it for clarity
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The query should return the following data set
Reference_No---Check_Number---Check_Date--------Description-------------------------------Invoice_Number----------Invoice_Type---Paid_Amount-----Vendor_Number
1234567----------11223-------------- 7/5/2008----------paid for cleaning----------------------44345563------------------I-----------------*10.00*------------19
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4653456----------11223--------------7/5/2008-----------paid for cleaning------------------------35654765-------------------I---------------------30.00--------------19
The following is my query. I am kind of lost.
select B.Description, A.sequence_id,A.check_date, A.check_number, A.invoice_number, A.amount, A.vendor_number
from (
select sequence_id,check_date, check_number, invoice_number, sum(paid_amount) amount, vendor_number
from INVOICE
group by sequence_id,check_date, check_number, invoice_number, vendor_number
) A, INVOICE B
where A.sequence_id = B.sequence_id
Thanks,
Nick

It looks like it is a duplicate thread - correct me if i'm wrong in this case ->
Need help with SQL Query with Inline View + Group by
Regards.
Satyaki De.

Generate dynamic reports using sql query and send via mail

Can anyone provide me the links to dynamically generate the sql query based reports and send it to Mail. it should be called from the scheduler program using PL/SQL

suppose you have the query as
spool myrep.txt
select * from emp where rowid<3;
spool off
write the query in the emp.sql query at any directory like d:\sqljobs\emp.sql
the call make a batch file like sndml.bat and write the following codes
sqlplus scott/tiger@orcl @d:\sqljobs\emp.sql
explorer mailto:[email protected] d"\sqljobs\myrep.txt
or if you are using any mailing software then you can use that..

Make Dynamic Form from sql query

Hi... i'm trying to create a VO with sql query, but the attributes for this Vo are should made from rows from sql query not from columns, how i can do this?
example
NOMCAMPODATOS -- ORDENBLKWEB
PLANMINFIANZAS --
SERIEID -- 5
CODREMOLQUE -- 4
CODFORMPAGO -- 24
CODCIUDAD -- 13
DIREC -- 10
EMAIL -- 17
FECFINVIG -- 20
VO example
attributes:
PLANMDIANZAS NUMBER
SERIEID NUMBER
CODREMOLQUE NUMBER
ETC..
Edited by: JLopezJujuy on 18-dic-2012 10:01

Try a PIVOT operator in your SELECT command, or one of the other ways to turn rows into columns. Look in the SQL manual for more information, or ask in the SQL and PL/SQL forum.
By the way, this doesn't sound like a very good database design. Have a look at this "Ask Tom" thread for a discussion about what is wrong with it - http://asktom.oracle.com/pls/apex/f?p=100:11:0::NO::P11_QUESTION_ID:10678084117056

Dynamic filtering with BEx query variables in WebI 3.1

Hi experts.
Can anybody help me ?
1) I use BEx query variables in WebI 3.1 . But i can't understand how to order fields of selection screen in WebI reports
2) How can i use Dynamic filtering with BEx query variables in WebI 3.1 ?
It's need that list of second field on selection screen will be accoding to result of selection first field on selection screen and so on .
Need i use BEx user-exit variables ?
Thank you

Hi,
1) Variable sequence isn't respected in XI3.1 - and can't be modified in OLAP.unv (this enhancement exists in 4.0 )
2) Dynamic filtering? Yes, Exit routines are the best way to go for this.
Regards,
H

How to achieve this result using sql query?

hello gurus,
i have a table like this
id name
1 a
2 b
3 c
4 d
5 e
6 f
7 g
8 h
9 i
10 j
11 k
12 l
13 m now my result should be like this
id name id name id name
1 a 6 f 11 k
2 b 7 g 12 l
3 c 8 h 13 m
4 d 9 i
5 e 10 jhow to achieve it by sql query ?
thanks and regards,
friend
Edited by: most wanted!!!! on Feb 22, 2012 5:55 AM

hi,
Did you mean this:
with a as
(select 1 id ,'a' name from dual
union all select 2 id ,'b' name from dual
union all select 3 id ,'c' name from dual
union all select 4 id ,'d' name from dual
union all select 5 id ,'e' name from dual
union all select 6 id ,'f' name from dual
union all select 7 id ,'g' name from dual
union all select 8 id ,'h' name from dual
union all select 9 id ,'i' name from dual
union all select 10 id ,'j' name from dual
union all select 11 id ,'k' name from dual
union all select 12 id ,'l' name from dual
union all select 13 id ,'m' name from dual
select
id_1
,name_1
,id_2
,name_2
,id_3
,name_3
from
select
 id id_1
 ,name name_1
 ,lead(id,5) over (order by id) id_2
 ,lead(name,5) over (order by id) name_2
 ,lead(id,10) over (order by id) id_3
 ,lead(name,10) over (order by id) name_3
 ,rownum r
from
 a
where
r <=5
D_1 NAME_1 ID_2 NAME_2 ID_3 NAME_3
1 a 6 f 11 k
2 b 7 g 12 l
3 c 8 h 13 m
4 d 9 i
5 e 10 j Regards,
Peter

Problem with SQL query region source containing OLAP clauses

Hi team,
I believe I found a bug when HTMLDB validates the SQL Query in a report region.
My query includes an ORDER BY clause within a windowing function and HTMLDB refuses to accept the source owing to the presence of the ORDER BY and the column heading sort preference.
Clearly the order-by in a window function has little to do with the column heading sort, but this error prevents me from updating the conditional display item in the page definition.
Note also that the page was imported smoothly from the 1.5 version, so probably the region source is not checked at that time, but only when you update it "manually".
So, in the end, if I don't change anything the page works because the sql query is assumed to be correct but unfortunately I need to change the condition and I cannot.
The problem shows up in page 126 of app 21670, SQL query region.
Bye,
Flavio
PS: may be I can work around this by using the pl/sql function returning the sql query.

Flavio,
We're aware of this problem. For now, your workaround is described in this thread:
HTMLDB 1.6 and "order by" in analytic functions
Sergio

Help with sql query the status of A/P Reserve Invoice

Hi,
I am trying to write a query which lists all A/P Reserve Invoice info with OPEN status.
I check the OPCH table and cannot find the rule to tell the status.
The "DocStatus" field has two values only: 'O' for open and 'C' for closed.
However, the status of A/P Reserve Invoice are OPEN, CLOSED, DELIVERED, PAID, etc.
I try to use DocStatus field to filter, but the result does not match what I see in SAP.
Could you please give me some hints about how to get the data I need? Thank you.
Best regards,
Sylvia
Edited by: csylvia on Jun 23, 2011 5:54 AM

Hi Darius,
Thanks for your reply.
However, I don't know what is the relationship between Purchase order and A/P Reserve Invoice.
Do you mean using "SELECT T0.DocEntry FROM OPCH T0, OPOR T1 WHERE T0.DocNum = T1.DocNum AND T1.DocStatus = 'O';" to query the A/P Reserve Invoice data with OPEN status?
But the result is not what I want.
The result of "*SELECT * FROM OPOR WHERE DocStatus = 'O';*" is also not.
I'd like to query A/P Reserve Invoice list with OPEN status, and I try the following sql query:
SELECT DocEntry FROM OPCH WHERE DocStatus = 'O' AND InvntSttus = 'O';
The result is close to what I need, but it's not exactly correct.
Moreover, I don't think the sql query conditions is accurate.
Please give me some advice. Thank you.
Best regards,
Sylvia

Issue with SQL Query with Presentation Variable as Data Source in BI Publisher

Hello All
I have an issue with creating BIP report based on OBIEE reports which is done using direct SQL. There is this one report in OBIEE dashboard, which is written using direct SQL. To create the pixel perfect version of this report, I am creating BIP data model using SQL Query as data source. The physical query that is used to create OBIEE report has several presentation variables in its where clause.
select TILE4,max(APPTS), 'Top Count' from
SELECT c5 as division,nvl(DECODE (C2,0,0,(c1/c2)*100),0) AS APPTS,NTILE (4) OVER ( ORDER BY nvl(DECODE (C2,0,0,(c1/c2)*100),0)) AS TILE4,
c4 as dept,c6 as month FROM
select sum(case when T6736.TYPE = 'ATM' then T7608.COUNT end ) as c1,
     sum(case when T6736.TYPE in ('Call Center', 'LSM') then T7608.CONFIRMED_COUNT end ) as c2,
     T802.NAME_LEVEL_6 as c3,
     T802.NAME_LEVEL_1 as c4,
     T6172.CALENDARMONTHNAMEANDYEAR as c5,
     T6172.CALENDARMONTHNUMBERINYEAR as c6,
     T802.DEPT_CODE as c7
from
     DW_date_DIM T6736 /* z_dim_date */ ,
     DW_MONTH_DIM T6172 /* z_dim_month */ ,
     DW_GEOS_DIM T802 /* z_dim_dept_geo_hierarchy */ ,
     DW_Count_MONTH_AGG T7608 /* z_fact_Count_month_agg */
where ( T802.DEpt_CODE = T7608.DEPT_CODE and T802.NAME_LEVEL_1 = '@{PV_D}{RSD}'
and T802.CALENDARMONTHNAMEANDYEAR = 'July 2013'
and T6172.MONTH_KEY = T7608.MONTH_KEY and T6736.DATE_KEY = T7608.DATE_KEY
and (T6172.CALENDARMONTHNUMBERINYEAR between substr('@{Month_Start}',0,6) and substr('@{Month_END}',8,13))
and (T6736.TYPE in ('Call Center', 'LSM')) )
group by T802.DEPT_CODE, T802.NAME_LEVEL_6, T802.NAME_LEVEL_1, T6172.CALENDARMONTHNAMEANDYEAR, T6172.CALENDARMONTHNUMBERINYEAR
order by c4, c3, c6, c7, c5
))where tile4=3 group by tile4
When I try to view data after creating the data set, I get the following error:
Failed to load XML
XML Parsing Error: mismatched tag. Expected: . Location: http://172.20.17.142:9704/xmlpserver/servlet/xdo Line Number 2, Column 580:
Now when I remove those Presention variables (@{PV1}, @{PV2}) in the query with some hard coded values, it is working fine.
So I know it is the PV that's causing this error.
How can I work around it?
There is no way to create equivalent report without using the direct sql..
Thanks in advance

I have found a solution to this problem after some more investigation. PowerQuery does not support to use SQL statement as source for Teradata (possibly same for other sources as well). This is "by design" according to Microsoft. Hence the problem
is not because different PowerQuery versions as mentioned above. When designing the query in PowerQuery in Excel make sure to use the interface/navigation to create the query/select tables and NOT a SQL statement. The SQL statement as source works fine on
a client machine but not when scheduling it in Power BI in the cloud. I would like to see that the functionality within PowerQuery and Excel should be the same as in Power BI in the cloud. And at least when there is a difference it would be nice with documentation
or more descriptive errors.
//Jonas

Dynamic Link in SQL Query Report

Andy,
I refromatted the message since it was all garbled, I didn't realize it came out like that the first time.
1) I am not sure what you meant by the "#" in your message until I did the substitution of #'s for < > I didn't have that in my URL.
2) Since the whole statement is enclosed in single quotes to be inside of a decode statement I think this is an issue with the javascript and it's double quotes or is it?
3) I took care of the passing values for items, even if I can just get the link to work some what I would be happy I can worry abou those values later..
Hello I have a a link that is generated in a report
sql based on an SQL query and I would like to turn it
into a popup instead of a direct link. But I seem to
be having some problems going from a link to a popup
link...
 I replaced the brackets < > with "#" 
This statement works;
SELECT decode(create_date, NULL, NULL, '#a
href="f?p=&APP_ID.:71:&SESSION.::NO:100:P71_EQUIPMENT_
ID,P71_CONTAINER_TYPE_ID:' || equipment_id || ',' ||
container_type_id || '"/#' || create_date ||'#/#>' )
AS "HIST_NOTE",


but I would like to turn make it a popup instead of a
direct link, I think the problem has something to do
with the parenthesis (double and single mixed) any
ideas?


I tried doubling them up (using three single ticks
for double parens inside of single ticks and
everything


 I replaced the brackets < > with "#" 
decode(create_date,
NULL,
NULL,
'#a href="javascript:popupPage('f?p=&APP_ID.:71:&SESSION.::NO:100:P71_EQUIPMENT_ID,P71_CONTAINER_TYPE_ID:' || equipment_id || ',' || container_type_id || '"/#' || create_date ||'#/a#')" ' AS "HIST_NOTE",


Any ideas?
The error I usually get mostly complains about "ORA-00907: missing right parenthesis"....
I put an example up on apex.oracle.com if you want to debug it there (it of course does not work right now)
http://apex.oracle.com/pls/otn/f?p=18490:5
guest/apex123
Thanks
Justin
Message was edited by:
Justin P

Denes,
I was able to get it working based on one of your examples, it gets ugly when you embed the popup javascript into the link as you know. You have some really great examples, I hadn't been to your page in awhile.
Here is my end result (this is embedded in a decode statement so single ticks would go around the entire example below)
<a href="javascript:popUp2('''
|| 'f?p=&APP_ID.:71:&SESSION.::NO:100:'
|| 'P71_EQUIPMENT_ID,P71_CONTAINER_TYPE_ID:'
|| equipment_id || ',' || '&F110_CONTAINER_TYPE_IP.'
|| ''', 900, 600);">'
|| create_date
|| '</a>
Thanks to all that helped me out here,
Justin

Get file name of an email attachment with sql query

Hi all,
How can I get the file name of an email attachment with a sql or pl/sql query?
Thanks in advance.
Edited by: JonasZzZz on Sep 14, 2009 10:52 AM

Hi, anynone? please..

Problem with SQL Query

I am a java developer and having problem writing a simple sql query. Any help is highly appreciated.
USER_LOGIN
CREATE TABLE USER_LOGIN
EMAIL_ADDRESS VARCHAR2(30 BYTE) NOT NULL,
PASSWORD VARCHAR2(30 BYTE) NOT NULL,
LAST_NAME VARCHAR2(20 BYTE),
FIRST_NAME VARCHAR2(20 BYTE),
STATUS VARCHAR2(1 BYTE)
DATA:
INSERT INTO USER_LOGIN (EMAIL_ADDRESS, PASSWORD, LAST_NAME, FIRST_NAME, STATUS) VALUES ( [email protected], UjBhZHJ1bm5lcg==, klein, james, 1);
INSERT INTO USER_LOGIN (EMAIL_ADDRESS, PASSWORD, LAST_NAME, FIRST_NAME, STATUS) VALUES ( [email protected], UjBhZHJ1bm5lcg==, cullen, sarah, 1);
INSERT INTO USER_LOGIN (EMAIL_ADDRESS, PASSWORD, LAST_NAME, FIRST_NAME, STATUS) VALUES ( [email protected], UjBhZHJ1bm5lcg==, cole, kling, 1);
INSERT INTO USER_LOGIN (EMAIL_ADDRESS, PASSWORD, LAST_NAME, FIRST_NAME, STATUS) VALUES ( [email protected], UjBhZHJ1bm5lcg==, stein, amy, 1);
INSERT INTO USER_LOGIN (EMAIL_ADDRESS, PASSWORD, LAST_NAME, FIRST_NAME, STATUS) VALUES ( [email protected], UjBhZHJ1bm5lcg==, stone, edward, 1);
INSERT INTO USER_LOGIN (EMAIL_ADDRESS, PASSWORD, LAST_NAME, FIRST_NAME, STATUS) VALUES ( [email protected], UjBhZHJ1bm5lcg==, simps, harris, 1);
INSERT INTO USER_LOGIN (EMAIL_ADDRESS, PASSWORD, LAST_NAME, FIRST_NAME, STATUS) VALUES ( [email protected], UjBhZHJ1bm5lcg==, brown, steven, 1);
INSERT INTO USER_LOGIN (EMAIL_ADDRESS, PASSWORD, LAST_NAME, FIRST_NAME, STATUS) VALUES ( [email protected], UjBhZHJ1bm5lcg==, kumar, vikram, 1);
INSERT INTO USER_LOGIN (EMAIL_ADDRESS, PASSWORD, LAST_NAME, FIRST_NAME, STATUS) VALUES ( [email protected], UjBhZHJ1bm5lcg==, gray, susan, 1);
INSERT INTO USER_LOGIN (EMAIL_ADDRESS, PASSWORD, LAST_NAME, FIRST_NAME, STATUS) VALUES ( [email protected], UjBhZHJ1bm5lcg==, green, monica, 1);
INSERT INTO USER_LOGIN (EMAIL_ADDRESS, PASSWORD, LAST_NAME, FIRST_NAME, STATUS) VALUES ( [email protected], UjBhZHJ1bm5lcg==, tile, eric, 1);
INSERT INTO USER_LOGIN (EMAIL_ADDRESS, PASSWORD, LAST_NAME, FIRST_NAME, STATUS) VALUES ( [email protected], UjBhZHJ1bm5lcg==, parder, sergey, 1);
INSERT INTO USER_LOGIN (EMAIL_ADDRESS, PASSWORD, LAST_NAME, FIRST_NAME, STATUS) VALUES ( [email protected], UjBhZHJ1bm5lcg==, fossil, bill, 1);
This is just the sample data. In production I have around 30,000 records and I have a requirement to retrieve the records in a batch of 5,000 at a time.
For testing on the above 10 records, I need to retrieve 3 at a time.
For instance: From my java servlet phase listener, I am going to run a loop, inside which I make a database call. For the first time inside the loop, it has to fetech records 1 to 3, the second time 4 to 6, the third time 7 to 9 and finally the last record. I will be able to pass two parameters for start and end row indexes.
I have come up with the following query...
SELECT U.EMAIL_ADDRESS,
U.PASSWORD,
U.LAST_NAME,
U.FIRST_NAME,
U.STATUS
FROM USER_LOGIN U
WHERE ROWNUM > /*start index*/ AND ROWNUM < /*end index*/
ORDER BY EMAIL_ADDRESS
But the results are not as expected. It works well for the first batch where start index is 0 and end index is 4, but it returns zero records when start index is 3 and end index is 7. Any help on this would be highly appreciated
Thanks.

Saludos Sirgeneral,
This is one of the technique you should be working on
SELECT * FROM(
SELECT ROWNUM rn,e.* FROM emp e
ORDER BY empno)
WHERE rn BETWEEN &st_range AND &end_rangeIn your case the query would be
select * from(
SELECT rownum en, U.EMAIL_ADDRESS,
U.PASSWORD,
U.LAST_NAME,
U.FIRST_NAME,
U.STATUS
FROM USER_LOGIN U
ORDER BY EMAIL_ADDRESS)
where rn between 4 and 6); --second set for exampleCheers!!!
Bhushan

Using prompts with SQL query

Post Author: wleonetti
CA Forum: Crystal Reports
Hello!
I have acquired a report from our regional headquarters, and have been asked locally to add a prompt to one that already exists in the report.
The report currently uses an SQL query, which in turn uses a single prompt to limit the data reported. However, the name of the parameter in the Field Explorer in Parameter Fields is "Facility", but, when I use the Database Expert and select edit for the query (under Selected Tables, right-click on "Command" under the database and click on "Edit Command"--is Command a default name?), under the Parameter List, the name of the parameter there is "Facility1" (?). The SQL references the parameter "Facility1" (...like '{?Facility1}'), but I cannot find any link/interface between the Parameter List "Facility1" to the Parameter Field "Facility", and I cannot find any other references to "Facility1" anywhere else in the report (sorry, I'm very new at CR, and am not sure how to do a global search of a desired text string in the reports).
I have asked the author for an explanation, but he would only offer, after indicating that he ... was not obligated to help me in any way .., the following bone: "I just simply rename the parameter in Command from Facility1 to Facility which bears the same name as the parameter interface and it just works fine." This only served to confuse me more, since the parameter name currently in Command is "Facility1" (and the report works the way it is)--when I change the name of the parameter in Parameter List (and the parameter name in the SQL query) to "Facility" (to match the Parameter Field's "Facility"?) ... the parameter in the Parameter Fields ... disappears?
Can someone please instruct me how to, in whatever steps are necessary, add a parameter to the Parameter Fields and edit the SQL code to use that parameter? or point me to some documentation that will help me with this?
Thanks in advance for any help offered.
wleonetti

Hi Eric,
Try expressing the source as this:
begin
return functionname(to_date('30-sep-2010', 'dd-mon-yyyy'));
end;That works fine for me, and if I take out the begin-end and the trailing semicolon from the return statement I get the same behavior as you.
It does mention in the help for the source (only during the wizard though) that this source type has to be expressed that way, but I agree it would be helpful if the tool would validate for this format when 'Function Returning SQL Query' is used or give some sort of indication of the trouble. Anyway, this should get you going again.
Hope this helps,
John
If you find this information useful, please remember to mark the post "helpful" or "correct" so that others may benefit as well.

Help with SQL query invloving time operations

I have created 2 tables in my SQL. One is the user_info table which stores the time of login and timezone of login for each user. The other is the post_table which stores the postid, user who makes the post, time of post and timezone for each posts.
CREATE TABLE user_info
user_id VARCHAR(20),
login_date DATE,
login_time_zone VARCHAR(20),
PRIMARY KEY (user_id)
CREATE TABLE post_table
post_id VARCHAR(20),
user_id VARCHAR(20),
datepost DATE,
time_zone VARCHAR(20),
PRIMARY KEY (post_id),
FOREIGN KEY (user_id) REFERENCES user_info(user_id) ON DELETE CASCADE
) ;Some sample data for my tables is as below -
INSERT INTO user_info VALUES( 'u1', to_date('9/17/2009 20:00','MM/DD/YYYY mi:ss'), -2 );
INSERT INTO user_info VALUES( 'u2', to_date('9/17/2009 19:55','MM/DD/YYYY mi:ss'), -4 );
INSERT INTO post_table VALUES( 'p1', 'u1', to_date('9/17/2009 20:50','MM/DD/YYYY mi:ss'), 6 );
INSERT INTO post_table VALUES( 'p2', 'u2', to_date('9/17/2009 20:30','MM/DD/YYYY mi:ss'), -5 );
INSERT INTO post_table VALUES( 'p3', 'u2', to_date('9/18/2009 6:00','MM/DD/YYYY mi:ss'), 2 );
INSERT INTO post_table VALUES( 'p4', 'u1', to_date('9/17/2009 21:00','MM/DD/YYYY mi:ss'), -3 );I need to write an SQL query which - finds the user(s) whose time difference between the login time and the latest time when he/she writes a post is the smallest. I need to consider the timezones here as well.
I am unsure if time_zone should be of type VARCHAR or TIMESTAMP so have created it as VARCHAR in my tables.
Someone please help me form this query.
PS : How do I user <code> tags in this forum to write sql statements.
Edited by: user11994430 on Oct 9, 2009 5:59 PM

I tried with the following test data
INSERT INTO user_info VALUES( 'u1', to_date('9/17/2009 20:00','MM/DD/YYYY mi:ss'), 1 );
INSERT INTO user_info VALUES( 'u2', to_date('9/16/2009 13:00','MM/DD/YYYY mi:ss'), 1 );
INSERT INTO user_info VALUES( 'u3', to_date('9/18/2009 15:00','MM/DD/YYYY mi:ss'), 0 );
INSERT INTO user_info VALUES( 'u4', to_date('9/20/2009 17:00','MM/DD/YYYY mi:ss'), 0 );
INSERT INTO user_info VALUES( 'u5', to_date('9/14/2009 3:00','MM/DD/YYYY mi:ss'), -3 );
INSERT INTO user_info VALUES( 'u6', to_date('9/15/2009 6:00','MM/DD/YYYY mi:ss'), -3 );
INSERT INTO user_info VALUES( 'u7', to_date('9/16/2009 7:00','MM/DD/YYYY mi:ss'), 0 );
INSERT INTO user_info VALUES( 'u8', to_date('9/17/2009 8:00','MM/DD/YYYY mi:ss'), -8 );
INSERT INTO user_info VALUES( 'u9', to_date('9/18/2009 9:00','MM/DD/YYYY mi:ss'), 0 );
INSERT INTO user_info VALUES( 'u10', to_date('9/19/2009 10:00','MM/DD/YYYY mi:ss'), 1 );
INSERT INTO user_info VALUES( 'u11', to_date('9/20/2009 11:00','MM/DD/YYYY mi:ss'), -5 );
INSERT INTO user_info VALUES( 'u12', to_date('9/21/2009 19:00','MM/DD/YYYY mi:ss'), -8 );
INSERT INTO user_info VALUES( 'u13', to_date('9/1/2009 4:00','MM/DD/YYYY mi:ss'), -3 );
INSERT INTO user_info VALUES( 'u14', to_date('9/22/2009 7:00','MM/DD/YYYY mi:ss'), 1 );
INSERT INTO user_info VALUES( 'u15', to_date('9/24/2009 23:00','MM/DD/YYYY mi:ss'), 1 );
INSERT INTO user_info VALUES( 'u16', to_date('9/25/2009 11:00','MM/DD/YYYY mi:ss'), 1 );
INSERT INTO user_info VALUES( 'u17', to_date('9/26/2009 18:00','MM/DD/YYYY mi:ss'), -4 );
INSERT INTO user_info VALUES( 'u18', to_date('9/27/2009 13:00','MM/DD/YYYY mi:ss'), -8 );
INSERT INTO user_info VALUES( 'u19', to_date('9/17/2009 18:00','MM/DD/YYYY mi:ss'), -5 );
INSERT INTO user_info VALUES( 'u20', to_date('9/29/2009 22:00','MM/DD/YYYY mi:ss'), -8 );
INSERT INTO user_info VALUES( 'u21', to_date('9/30/2009 5:00','MM/DD/YYYY mi:ss'), -8 );
INSERT INTO user_info VALUES( 'u22', to_date('9/15/2009 7:00','MM/DD/YYYY mi:ss'), -4 );
INSERT INTO user_info VALUES( 'u23', to_date('9/16/2009 17:00','MM/DD/YYYY mi:ss'), -8 );
INSERT INTO user_info VALUES( 'u24', to_date('9/17/2009 19:00','MM/DD/YYYY mi:ss'), 0 );
INSERT INTO user_info VALUES( 'u25', to_date('9/18/2009 22:00','MM/DD/YYYY mi:ss'), -5 );
INSERT INTO user_info VALUES( 'u26', to_date('9/19/2009 15:00','MM/DD/YYYY mi:ss'), 1 );
INSERT INTO user_info VALUES( 'u27', to_date('9/20/2009 23:00','MM/DD/YYYY mi:ss'), 1 );
INSERT INTO post_table VALUES('p1', 'u26', to_date('9/14/2009 18:00','MM/DD/YYYY mi:ss'), -5 ) ;
INSERT INTO post_table VALUES('p2', 'u2', to_date('7/1/2009 15:00','MM/DD/YYYY mi:ss'), 1 ) ;
INSERT INTO post_table VALUES('p3', 'u2', to_date('7/20/2009 20:00','MM/DD/YYYY mi:ss'), 1 );
INSERT INTO post_table VALUES('p4', 'u5', to_date('7/20/2009 22:00','MM/DD/YYYY mi:ss'), 1) ;
INSERT INTO post_table VALUES( 'p5', 'u2', to_date('7/21/2009 10:00','MM/DD/YYYY mi:ss'), 1 );
INSERT INTO post_table VALUES( 'p6', 'u8', to_date('8/1/2009 20:00','MM/DD/YYYY mi:ss'), -8 );
INSERT INTO post_table VALUES( 'p7', 'u10', to_date('5/3/2009 15:00','MM/DD/YYYY mi:ss'), -3 ) ;
INSERT INTO post_table VALUES( 'p8', 'u25', to_date('9/15/2009 20:00','MM/DD/YYYY mi:ss'), -5 ) ;
INSERT INTO post_table VALUES( 'p9', 'u6', to_date('9/7/2009 19:00','MM/DD/YYYY mi:ss'), -3 ) ;
INSERT INTO post_table VALUES( 'p10', 'u10', to_date('7/22/2009 10:00','MM/DD/YYYY mi:ss'), 1 ) ;
INSERT INTO post_table VALUES( 'p11', 'u9', to_date('7/7/2009 13:00','MM/DD/YYYY mi:ss'), 0) ;
INSERT INTO post_table VALUES( 'p12', 'u2', to_date('7/30/2009 11:00','MM/DD/YYYY mi:ss'), 1 );
INSERT INTO post_table VALUES( 'p13', 'u10', to_date('7/22/2009 8:00','MM/DD/YYYY mi:ss'), 1 );
INSERT INTO post_table VALUES( 'p14', 'u6', to_date('5/30/2009 23:00','MM/DD/YYYY mi:ss'), 1 );
INSERT INTO post_table VALUES( 'p15', 'u3', to_date('5/31/2009 2:00','MM/DD/YYYY mi:ss'), 0 ) ;
INSERT INTO post_table VALUES( 'p16', 'u12', to_date('6/20/2009 7:00','MM/DD/YYYY mi:ss'), -8 ) ;
INSERT INTO post_table VALUES( 'p17', 'u20', to_date('6/20/2009 9:00','MM/DD/YYYY mi:ss'), -8) ;
INSERT INTO post_table VALUES( 'p18','u27', to_date('9/15/2009 11:00','MM/DD/YYYY mi:ss'), -5 );
INSERT INTO post_table VALUES( 'p19','u26', to_date('7/1/2009 20:00','MM/DD/YYYY mi:ss'), 0 ) ;
INSERT INTO post_table VALUES( 'p20', 'u25', to_date('7/2/2009 17:00','MM/DD/YYYY mi:ss'), -5 );
INSERT INTO post_table VALUES( 'p21', 'u27', to_date('7/3/2009 20:00','MM/DD/YYYY mi:ss'), 1) ;
INSERT INTO post_table VALUES( 'p22', 'u2', to_date('9/15/2009 13:00','MM/DD/YYYY mi:ss'), 1 ) ;
INSERT INTO post_table VALUES( 'p23', 'u21', to_date('5/30/2009 17:00','MM/DD/YYYY mi:ss'), -8 );
INSERT INTO post_table VALUES( 'p24', 'u25', to_date('8/30/2009 20:00','MM/DD/YYYY mi:ss'), -5 );
INSERT INTO post_table VALUES( 'p25', 'u18', to_date('9/13/2009 18:00','MM/DD/YYYY mi:ss'), -8 );
INSERT INTO post_table VALUES( 'p26', 'u11', to_date('9/9/2009 13:00','MM/DD/YYYY mi:ss'), -8 );
INSERT INTO post_table VALUES( 'p27', 'u23', to_date('9/10/2009 1:00','MM/DD/YYYY mi:ss'), -5 );
INSERT INTO post_table VALUES( 'p28', 'u22', to_date('9/10/2009 14:00','MM/DD/YYYY mi:ss'), -4 );The output I get is
USER_ID
u25
u9
u20
u5
u27
u8
u21
u23
u22
u26
u10
USER_ID
u3
u12
u18
u2
u6
u11
17 rows selected.

Achieve dynamic pagination with sql query

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