SQL & PL/SQL :: Select Greatest Number From Row
Sep 18, 2012
I've a table where I've to select the greatest value from each row.
create table find_max ( colA number, colB number, colC number );
insert all
into find_max values (8,12,13)
into find_max values (-1,-22,3)
into find_max values (1,null,13)
into find_max values (-1,-2,-3)
into find_max values (-1,0,-10)
select * from dual;
the desired format of output is:
three fields for colA, colB, colC and max_value
max_value for 1st row is 13, 2nd is 3, 3rd is 13, 4th is -1,5th is 0.
how can I find the max_value without using any built in functions??
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Oct 21, 2012
I am confused with third one.
CODE1. >> Comparing two strings >>
SQL> select greatest('99' ,'100') from dual;
GR
99
2. >> comparing both numbers >>
SQL> select greatest( 99 ,100) from dual;
GR
100
3.>> Comparing string and number >>
SQL> select greatest('99' ,100) from dual;
GR
99
whats the logic behind 99 being returned for thirdone.
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Aug 4, 2010
SQL> select greatest ( 1000,null) from dual;
GREATEST(1000,NULL)
-------------------
SQL> with t as
2 ( select 1 a from dual union all
3 select null from dual)
4 select max(a) from t;
MAX(A)
----------
1
Why greatest returns null ( as the greatest value among the list of values) as the greatest value while max returns 1 in the above case?
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Jul 22, 2011
I am trying to update the greatest value in a column from a string of other column.
Ex: f the value is shown 10M+16M+25M-DG, then populate 25 only
so for that I had written query as follows:
update ANCHOR set IEL_STRAND_SIZE= greatest(
substr
(REPLACE(REPLACE(REGEXP_REPLACE( F_TYP, '[A-Z]', '' ),'+',','),'-',','),
0,
length(REPLACE(REPLACE(REGEXP_REPLACE( F_TYP, '[A-Z]', '' ),'+',','),'-',','))-1))
The output is given as 10,16,25,but not as 25.so how could i write it?Do I need to implement procedure or arrays for it.
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Jul 10, 2010
Which part of the Posting Guidelines (
[URL]......)
did you NOT read & follow?
Was it the part about using SEARCH (
[URL]......
or GOOGLE (
[URL]......
before posting?
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Jun 13, 2007
In sql plus How do I get the number of distinct rows of a certain value?
for example
select group_number from records group by group_number
How would I query for the total number of group_numbers in this query?
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Oct 16, 2012
I have a column COL1 in table TAB1 which is varchar2. I want select only rows which has number and not alphanumeric value? I don't want to use regexp for this since
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Oct 17, 2012
This is what I've been trying to do.
I have the following table:
FOOTBALL PLAYERS < ID, NAME, ATTRIBUTE>
100-JIM-TALL
101-BOB-STRONG
102-MARK-SMART
...etc
I want to form a query that regardless of the total returned records, I will be able to specify how many of each "kind" of players I want returned. There are several good reasons that it has to be one query and not many.
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Mar 2, 2011
The query below returns 101 rows. If I replace the column list with an asterik the query returns 892 rows. I do not understand why.
--select *
select Ref_Consultant_CD
,Resident_CD
,ID
,Ref_Facility_CD
[code]......
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Jul 1, 2010
I am facing a problem in bulk insert using SELECT statement.My sql statement is like below.
strQuery :='INSERT INTO TAB3
(SELECT t1.c1,t2.c2
FROM TAB1 t1, TAB2 t2
WHERE t1.c1 = t2.c1
AND t1.c3 between 10 and 15 AND)' ....... some other conditions.
EXECUTE IMMEDIATE strQuery...These SQL statements are inside a procedure. And this procedure is called from C#.The number of rows returned by the "SELECT" query is 70.
On the very first time call of this procedure, the number rows inserted using strQuery is 70. But in the next time call (in the same transaction) of the procedure, the number rows inserted is only 50.And further if we are repeating calling this procedure, it will insert sometimes 70 or 50 etc. It is showing some inconsistency.On my initial analysis it is found that, the default optimizer is "ALL_ROWS". When i changed the optimizer mode to "rule", this issue is not coming.I am using Oracle 10g R2 version.
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Feb 9, 2011
I need to export large number of records from select into the text file. It's about 2milion records.I can do it by PLSQL (see below) where executing of process takes time too much. How to export to text file faster?
DECLARE
fileid UTL_FILE.file_type;
BEGIN
fileid := UTL_FILE.fopen ('VRS_CEM', 'cust.txt', 'W');
UTL_FILE.put ( fileid, 'IMSI|MSISDN|CONTRACT');
UTL_FILE.NEW_LINE(fileid);
[code]....
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May 4, 2010
The below sql is giving different number of result sets while adding further columns in select clause.i.e After adding the columns 4,5,6 in the below query its giving different number of result set.In this case the result set count would be 5.
Before adding the columns 4,5,6,the result set count was 11.
SELECT PAYMENT_METHOD_MAP.NETTINGGROUP_ID,
PAYMENT_METHOD_MAP.CREDITPAYMENTMETHOD_CD,
PAYMENT_METHOD_MAP.DEBITPAYMENTMETHOD_CD,
PAYMENT_METHOD_MAP.AGENT_ID,
SETTLEMENT.NETTINGGROUP_ID,
SETTLEMENT.SETTLEMENTDATE
[code]....
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Sep 18, 2009
When i'm sorting on a calculated field i'm getting the following error:
ORDER BY item must be the number of a SELECT-list expression
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Aug 22, 2011
I am importing some data from Oracle into another database on a regular basis. It works fine for most of the queries but couple of queries don't work sometimes (random). I don't get any errors or any data.
We switched on the Oracle auditing to find out the queries being sent to oracle db. We can see all the queries in the Audit log. Is it possible to configure Auditing to get the "Number of Rows" returned by Select statements so that we can be sure that some data was returned.
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Aug 27, 2010
wanna to make matrix report retrieve months year and the number of weeks from dual table it supposes to the weeks number is 52 or 53 week months and weeks on the rows please find attach pic it show what i need to do for exmple
month name: January February March April May June July August September Nov October December
no of week : 1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-20-21-22....... TO 52 week
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Dec 27, 2012
Ive a requirement which ive overlooked for a while now as below,
On my tabular form i have fields: Empid as Select List and when the value is picked from this Select List EmpID i want the associated/corresponding phone# displayed in its TEXT FIELD in that same row,
apex 4.1.1/Oracle 11gR2,
also i tried the below as a workaround but it doesnt fulfill my requirement, [URL]....
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Jan 26, 2010
i am using oracle developer 6i report builder i required this type of query
example
if (:page number LIKE '1')
then
srw.set_text_color('darkred');
end if;
return (TRUE);
end;
but page number is not my table database item how can i use builtan page &<pagenumber> use for conditional format.
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Jun 17, 2010
i want to replace 4 digit number in a given string with the same number incremented by 10000.
That mean in the given sting 1201 should be replace by 11201 (Icremented BY 10000).
Input String:
<query><matchAll>true</matchAll><row><columnId>1201</columnId><dataType>31</dataType><op>Like</op><val>North America - Houston</val></row><row><columnId>1212</columnId><dataType>31</dataType><op>!=</op><val>Agreement Date Mismatch</val></row><row><columnId>1212</columnId><dataType>31</dataType><op>!=</op><val>Facility Type Mismatch</val></row><row><columnId>1224</columnId><dataType>31</dataType><op>Like</op><val>y</val></row></query>
Required output :
<query><matchAll>true</matchAll><row><columnId>11201</columnId><dataType>31</dataType><op>Like</op><val>North America - Houston</val></row><row><columnId>11212</columnId><dataType>31</dataType><op>!=</op><val>Agreement Date Mismatch</val></row><row><columnId>11212</columnId><dataType>31</dataType><op>!=</op><val>Facility Type Mismatch</val></row><row><columnId>11224</columnId><dataType>31</dataType><op>Like</op><val>y</val></row></query>
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Oct 21, 2011
I have a text field and if the text field has 5 consecutive numbers then I have to extract the number and the previous character from where the 5digit number starting
For example i/p asdfasfsdS251432dasdasd o/p should be S251432
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Oct 3, 2013
I gone through many forums and found that the number of voting disks should be always in odd number. Then why the maximum number of voting disk is 32?
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May 21, 2010
how do I count a list of number value eg 1,1,1,1,3,3,6,4 and find the one with maximum number which is 1
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Mar 3, 2011
I have a table with around 80 columns. All i need is to select first 40 columns.
Is there any way to select first 40 columns without giving all the 40 Column Names in select clause.
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Jul 4, 2010
i want to select dynamic column names in my select statement in my function.
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Oct 5, 2012
I M USING APEX 4.1 AND CREATED SELECT LIST ON PAGE, I WANT TO SHOW MIN VALUE OF THE SELECT LIST FOR THAT I WROTE IN THAT SELECT LIST PROPERTIES UNDER DEFAULT TAG MIN; AND CHOOSE PL/SQL EXPRESSION BUT ITS GIVING ERROR "Error computing item default value for page item P1_PRODUCT."
BUT IF I HARDCORE THE VALUE CONTAINING IN MY DATA LIKE PRODUCT ID = 1, I HARDCODED IN DEFAULT VALUE 1 AND SELECT PL/SQL EXPRESSION IT WORKS.
BUT ITS NOT DONE LIKE THIS I WANT TO SELECT BY DEFAULT MIN VALUE OF THE SELECT LIST, SO THAT THE DATA SHOULD BE DISPLAYED ACCORDING TO THAT.
THE EXACT REQUIREMENT IS TO ENTER THE SELECT LIST DEFAULT VALUE IN SESSION SO THAT DATA IS TO BE DISPLAYED.
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Mar 9, 2011
I have the following select query that works perfectly fine. Returns 25 rows based on the descending order of the price.But, I want add one more expression to this list of columns in this query (apart from customer_id).
the expression should look like Cust-01 for the first customer from the below query all the way to Cust-25 for the last customer.But how can I can generate 01 to 25 in oracle?
select customer_id from
(select customer_id from capitalPLAN
where member_status = 'MEMBER' AND customer_id NOT in ('156','201','1385','2125','3906','165')
order by price desc
)
where rownum <= 25
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Sep 28, 2012
my column type is NUMBER(10,0) ,it accept the input value from text field I using TO_NUMBER(?) to insert value into table, is the a way to handle if the input is 'aaaaaaaaaa' not digit?
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Dec 29, 2010
Why Blind select is better than Conditional select Statement?
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Feb 19, 2011
Here is script of tables
Quote:drop table p;
create table p (qty number(3), beg_no number(5));
insert into p values(5, 110);
insert into p values(8, 786);
drop table s;
create table s (used_no number(5));
insert into s values(111);
insert into s values(113);
insert into s values(791);
Table p: it has ticket quantity and ticket begining number. Thus according to first record ticket number will begin at 110 and will end at 110+5 (Beg_no +qty). According to second record ticket number will begin at 786 and will end at 786+8 (Beg_no +qty). This table can have many records.
Table s: it has ticket numbers which are sold. The ticket will always be any number from table and will lay in any record in this format between beg_no and beg_no+qty
Required: I want "p MINUS s" information. i.e.
Quote:
110
112
114
786
787
788
789
790
792
793
I am not expert in level by command.
Oracle version: 9
OS: Windows XP
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Feb 19, 2013
I have a report created in Reports6i. I have two fields at the bottom
1.Page Total
2.Voucher Total
I do not want to print the Page Total if the total number of pages = 1.
How can I achieve this?
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Apr 19, 2010
i have field(column name ) amata type is number . in excel i am having "," in amount field eg 9,999. how to do it
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