Managed to confuse myself significantly. I essentially want to write a query to determine when two counts are the same using a subquery.
Eg:
R(x,y)
Select count(x)
from R
group by x;
Then I want to run another query to determine which x's have the same count value and output these corresponding x's.
how to logically connect two tables. Here is an example of what I'm trying to do:
HOSTS TABLE CPU TABLE
----------- ---------
ID HOST ID CPU
01 host1 01 proc01
02 host2 01 proc02
03 host3 02 proc01
02 proc02
02 proc03
02 proc04
03 proc01
Based on the above, I can see that 'host1' has 2 CPUs, 'host2' has 4 CPUs, and 'host3' has 1 CPU. What I'd like to do is create a query that would output:
HOST CPU
----------
host1 2
host2 4
host3 1
I'm looping through the hosts and passing the them into another query as bind variables. That's slow and cannot be the best way to do this. I'm aware that I need to using a GROUP BY HAVING COUNT, but that doesn't seem to be working. It tends to return the total count of all CPUs rather than CPUs per host.
I have taken the export backup of a table using the following command
userid=system/manager@DBATEST
file=abc.dmp
log=abc.log
Tables=X.S_ORG_EXT_X
feedback=100000
buffer=10000000
[code]......
but on querying the table it shows the number of rows as
select count(*) from X.S_ORG_EXT_X;
COUNT(*)
----------
25656051
Explain why there is a mismatch in the count of the rows in the table.
I have a UNION query having 3 parts, 1st gets date, 2nd data and 3rd displays the formatted data count :WHERE clause of 2nd and 3rd queries are same.
Problem is that I an getting different record counts when I select the overall count of records given by the whole UNION query and when I run to count the records given by each query individually.First count. Here I am selecting the overall count of records given by the query :
select count(1)
from (
SELECT SUBSTR ( '0'
|| TO_CHAR (SYSDATE, 'MM/DD/YYYY')
|| TO_CHAR (SYSDATE, 'HH:MI:SS')
|| LPAD (' ', 180)
[code]...
This count is : 1751525 Second count. Now when I run to count the records given by each query individually, here is the result
select count(1) a
from (
SELECT SUBSTR ( '0'|| TO_CHAR (SYSDATE, 'MM/DD/YYYY') || TO_CHAR (SYSDATE, 'HH:MI:SS')
|| LPAD (' ', 180)|| chr(13), 1, 200 ) dtl_record from dual
select count(1) b from (
SELECT '1'
[code]...
why there is difference of 1 (1751526 - 1751526) in the count results.
We have a partitioned transaction table in our Datawarehouse environment which has the following partition strategy
SCHEME=DATE-HASH
GRAIN=DAILY
SUBGRAIN=NONE
HASH=8
FROM=31/12/2011
We recently had to delete data from the table. This was a simple delete statement with a where clause and without taking into consideration any partition/subpartition clauses. Post committing the delete we have a count mismatch problem with two queries in particular
select count(0) count_without_parallel FROM TRANSACTION_TABLE t;
--THIS RETRIEVES *15774811* ROWS
select /* parallel(t,default) */count(0) count_with_parallel FROM TRANSACTION_TABLE t+
--THIS RETRIEVES *15777617* ROWS WHICH IS THE ACTUAL EXPECTED COUNT.
I also ran the following just to summarize
select (select count_with_parallel from (
select /* parallel(t,default) */count(0) count_with_parallel FROM TRANSACTION_TABLE t))+
-
+(select count_without_parallel from (+
select count(0) count_without_parallel FROM TRANSACTION_TABLE t)) as false_difference
from dual;
The difference in *2806* rows as expected.To re-affirm my counts I ran
select /*+ parallel(t,default) */
'count_on_t',count(*) from TRANSACTION_TABLE t
group by 'count_on_t'
order by 1;
--THIS RETRIEVES *15777617* ROWS
Removing the parallel hint reverts back to the lesser count. Not sure what is wrong but something prevents the query from parsing the whole table and/or partitions and subpartitions.
I am trying to get a row count(*) for all the tables in my schema. The NUM_ROWS column in DBA_TABLES is not appropriate in this case because they are as good as the last analyze. So I need to get real time counts.
I tried the following code but I can't seem to catch my error.
DECLARE
l_sql varchar2(150);
cursor tablelist is
select table_name from dba_tables where owner = 'ME';
[Code]....
My expected results are :
TABLE_NAME ROW_COUNT
---------- ----------
User table
id | name
----------
2 | Harry
3 | Mary
Course_User table
summer_course_completed | winter_course_completed | user_id | attendance
------------------------------------------------------------------------
y | n | 2 | 20
y | n | 2 | 40
y | y | 2 | 30
n | n | 3 | 20
n | y | 3 | 60
I wish to list each student's name with the number of summer courses he has completed and the number of winter courses he has completed. I am trying this :
select u.name, count(*)
from user u, course_user cu
where u.id=cu.user_id and cu.summer_course_completed = 'y'
group by u.id;
but I can get only the number of summer courses OR the number of winter courses that each student has completed, but never both simultaneously, through a single query. Is there a way to do that ?
I have made a simple form in which user will be entering his username and relevant password to get authorised. My issue is , if the user is entering wrong password for 3 times then both fields should get disabled. I did the form until the point where it checks wether the user is authorised or not. But how to give count on failure of passwords.
View 5 Replies View RelatedI have got another curly one with regard to Sql Loader. My original issue via [message #513696] was resolved. In summary, SQL Loader opens a comma delimited csv file and it is able to successfully populate the appropriate Oracle table. However, during the run to process each unique csv file, SQL Loader produces a both a .log file (indicating what transpired during the load) and a .bad file of the records from the csv file that where rejected by SQL Loader.
the users have requested that "is it possible to update a separate table of the summary results of what went wrong and what was right?" It just so happens that the csv file contains some summary records (rows) with processing audit infor...as the following .bad file wrote out....
___________________________
ModuleID,ModuleSN,Lat,Lon,GMT Time,Tag Count,GMT Date,Client,Farm,Field,Variety,Machine
No Module ID ,No SN ,-30.178958,149.63844,9:55:58,0,21/04/2011,101,Widgen ,9,71BRF ,5987
3500B9880611170260179BFB,10202094587,-30.199379,149.661333,7:10:35,2,22/04/2011,101,Widgen ,30,71BRF ,5987
,,,,,,,,,,,
Total Modules,1602,,,,,,,,,,
Mis-reads,1,,,,,,,,,,
Mis-read %,0.06,,,,,,,,,,
1. The first record (starting in the 1st postion is "ModuleID") is a heading record in the csv file and can be disregarded.
2. The secord record (starting in the 1st postion is "No Module ID") is an error record in the csv file and can be disregarded.
3. The third record (starting in the 1st postion 3500B9880611170260179BFB, ) is a valid record, however, is was rejected as it is a duplicate of a preceeding record ...and the log indicates ...
Record 124: Rejected - Error on table PTLIVE.MODULE_CSV_LOADS.
ORA-00001: unique constraint (PTLIVE.MODULE_SERIAL_NUMBER_UK) violated
4. The fourth record (starting in the 1st postion is ,,,,,,,,,,,
) is a blank record in the csv file and can be disregarded.
5. The fifth record (starting in the 1st postion is "Total Modules" has a value of 1602 which I need to capture to write into a separate table.
6. The sixth record (starting in the 1st postion is "Mis-reads" ) has a value of 1 which I need to capture to write into a separate table.
7. The last record in the csv file and can be disregarded.
The summary Oracle table is
CREATE TABLE PTLIVE.SUBMODULES_SUMMARY
( IMPORT_CSV_FILE_NAME VARCHAR2(256 ),
TOTAL_SUBMODULES_LOADED NUMBER (5),
TOTAL_SUBMODULES_MIS_READ NUMVER (5),
DATEIMPORTED DATE default SYSDATE
)
Now I would like to trap the value 1602 and load that into the Oracle column TOTAL_SUBMODULES_LOADED and the value 1 and load this into TOTAL_SUBMODULES_MIS_READ.
The name of the csv file is known and I can (as the previous [message #513696] resolved) simply use a SQL Loader control file command > IMPORT_ CSV_FILE_NAME CONSTANT "Batch_2011Jun29_TEST.csv".
I have a table
TAB1 with data
no name
1 abc
2 abc
3 xyz
4 xyz
5 cvb
now I would like to create a form with name counts as
abc 2
xyz 2
cvb 1
I would like to create a datablock to display all the unique names, not sure where I should be writing the query to display unique names. I would like to create a textitem box to display the counts when the form is compiled, but not sure which trigger to use to write the query.
We had a new outsourcer who completed migration of 1 of our system running under Oracle10g-Solaris 10. We created an inventory script that will list all objects counts of SYS, SYSTEM and ORACLE and all other schemas. This script will be ran before (old server) and after migration (to new server). After migration to the new & bigger server, we noticed from the output of the inventory script for SYS/SYSTEM object counts had been reduced compared from the original/actual value (from the old server). Our outsourcer said that this is not an issue since SYS/SYSTEM objects are not transactional and cannot be controlled.
As we will conform that the migration was completed successfully by our new outsourcer.
I have a requirement to get the count of those records whose department is not changed since they have joined the organization.
Script:
CREATE TABLE ddumps(orgid NUMBER, orgdate DATE, orgdept VARCHAR2(10))
/
INSERT INTO ddumps VALUES(1,'01-JAN-1999','ORG1')
/
INSERT INTO ddumps VALUES(1,'01-JAN-2000','ORG2')
/
INSERT INTO ddumps VALUES(1,'01-JAN-2001','ORG2')
/
INSERT INTO ddumps VALUES(2,'01-JAN-1999','ORG1')
/
INSERT INTO ddumps VALUES(2,'01-JAN-2000','ORG1')
/
INSERT INTO ddumps VALUES(2,'01-JAN-2001','ORG1')
ORGID ORGDATE ORGDEPT
1 1/1/1999 ORG1
1 1/1/2000 ORG2
1 1/1/2001 ORG2
2 1/1/1999 ORG1
2 1/1/2000 ORG1
2 1/1/2001 ORG1
since the orgid 1 has changed the dept from org1 to org2 I do not want this to be appeared in the final count. Results should only include the orgid 2 since it didn't changed any dept.
I have 2 strings that I want to compare for example
string1 = 'ABC~AB/10/1234'
string2 = 'ABC~AB/10/1234~.....'
There could be anything after the 2nd ~ in string 2 is there a easy way of trimming string2 to the first 14 Characters? Or do I have to find the 2nd instance of ~ and then remove everything after (and including) that?
I have two databases.
one is "ora" it is a 8i version
2nd is "orcl" it is a 11g version
"Oracle" is the my local database. i wrote following program for comparing the row by row data in both the tables.
Q)Is it BEST practice? If not let me know the best practice to compare data in tables?
Q) If am not using the order by clause its giving me wrong output even though both the data tables has same data. WHY?
DECLARE
v_emptest1 EMP_TEST1%ROWTYPE;
v_emptest2 EMP_TEST1@ora%ROWTYPE;
v_suc_flg NUMBER := 0;
v_cnt1 NUMBER:=0;
[code].......
How to select the transactions out of the database that occurred within 70 seconds of each other. The toll_date field is a TIMESTAMP field.
Problem is, I seem to only get transactions that occurred within 70 minutes of each other. On the timestamp field I break the math down into the seconds in a day and I add 70. I then subtract that value and add that value to the timestamp and I should get anything between those values right?
SELECT Acct_ID, Ln, Tag_Rd, COUNT(*)
FROM (
SELECT T1.Account_ID Acct_ID, T1.Tag_Read Tag_Rd, T1.Revenue_Date Rev_Date, T1.Toll_Date, T1.Lane_ID, T1.Plaza, T1.Lane Ln, T2.Toll_Date, T2.Plaza, T2.Lane
FROM Toll T1
JOIN Toll T2
[code]......
Recently i have started working on PLSQL coding. I have a requirement. Either error or un-processed record count is 90% of to be processed records then the script has to fail. Currently I am having a situation where error count is 1 and total to be processed is also 1.
in the below
V_ERR is error count
V_UPS is un processed count
V_PROCESSED_COUNT is total to be processed.
I am expecting PASS result but it is giving FAIL.
DECLARE
V_ERR NUMBER:=0;
V_UPS NUMBER:=0;
V_PROCESSED_COUNT NUMBER:=0;
NIN NUMBER;
BEGIN
V_PROCESSED_COUNT:=1;
[Code] .......
I want to do a comparision for the missing rows between two diffrent tables
TBL1 and TBL2 both with the same structure but with diffrent data some data is identical. though my data is huge i wanted to make sure the technique i am using
As part of our project, we need to perform table comparisons in two different databases. I am currently looking for various options to accomplish this.
One of them is doing minus operation between these two tables. Also, i have looked at the data compare option in toad utility.
I am working in form 6i, database 9i. I have datablock on table t1.
table t1: name(varchar2), date(varchar2)
datablock: name(varchar2), date(varchar2)[i have insert date with time stamp]
for date column, i am inserting date with time stamp.While querying data, user just enters only date(no time stamp), i should be able to query data. I tried in data block where condition
WHERE: substr(date,1,11)=nvl(:block.date,substr(date,1,11)
i am not able to retrieve data through date, through name it's working fine.how to retrieve data by only entering date (without time stamp)
i executed the below code and found that output should be 5 but it shows 7(always else part). it is not comparing string in case.
declare
check_in_date date;
var_day varchar2(11);
rate_id number;
[code]....
I have a SQL query which joins several large tables (so indexes matter here) from Oracle database. In the where condition I use IS NULL with one of the date field values. Query takes 40 sec to run and if I comment this one line...it takes 1 sec to run. This date field is an index on the table and I learn that --
1. IS NOT NULL in where clause uses an index
2. IS NULL in where clause does not use an index
Is there any work around to make the query faster...other than changing all the NULL date values in the table to some string. In other words can I force it to use the index.
SF at oracle.com/technetwork/issue-archive/o53plsql-083350.html states that you can compare two database tables (of the same structure) by defining a nested table type (using %ROWTYPE) and two NT variables of that type, and loading the contents of each table into its respective NT variable, before comparing them using the = operator. Having read the Oracle documentation which states that you can only compare NTs for equality if they don't contain record types, I was surprised to read this, but figured I would try it because I must be misunderstanding SF, but it didn't work.
SCOTT@ORCL> create table empcopy3 as select * from emp;
Table created.
declare
type emp_ntt is table of emp%rowtype;
emp_nt1 emp_ntt;
[Code]....
But SF goes on to say he timed the execution of his NT equality method, comparing it with a SQL-only equivalent, and so I must be missing something. My understanding is that using %ROWTYPE declares a record type.
I have to compare a string entered in a form with a series of English strings in back-end PL/SQL( using LIKE operator )
But it so happens, the string entered in the form is specific to the language used in the country. for ex. in Dutch, it is entered in Dutch language.
So on comparing, it fails as the PL/SQL compares it with English Strings.
i am fetching one record based on date but not able to fetch the data.
in my table pdate column is there with date datatype and value is in that is:15-OCT-12 so i am fetching empid based on dates.
select empid from masterprocessdailydata where pdate=to_date('15/OCT/12','dd/MM/yy'); but not getting the empid.
I am trying to compare 2 char columns using trim to avoid space padding
CREATE TABLE TRIAL_A
(ABC CHAR(6));
INSERT ALL
[Code]....
I have got a table having column a, b , c, d, e and some values are stored in it. e.g. a, c and e have 'Y' and b and d have 'N' value in it.
How can i count with one query , how many columns have 'Y' and how many have 'N'.
cursor is one solution.
I am having some issues in creating the following trigger. It gets created but with compilation errors.
create or replace trigger min_max_update_trg
after insert on tidlrrep
referencing new as n
for each row
declare
bltMaxSize number;
repMaxSize number;
[code].....
when i tried without the comparison if repMaxSize < bltMaxSize then it got created successfully.
the problem is: 2 tables - one with 2 million records, and the other with 8000 records.
i need to compare for each record in a table if there's a similar string on the other table.
i've created a procedure that does the following:
opens the first cursor (select col1,col2,col3,col4... from table 1)
loop
opens second cursor (select col1 from table 2)
loop
if utl_match(col1, table2.col1) > 80 then
insert col1,col2,col3,col4... into tableX
end if
close second cursor
close first cursor
the thing is that this procedure takes forever to end...about 8 days.
is it because im using the utl_match function? is there a way to speed this up?
I'm using oracle 10g.I have a table with 4 columns
main_group-----id--------start_date------------end_date
M1-------------1---------07FEB11---------------10FEB11
M1-------------2---------09FEB11---------------11FEB11
M1-------------3---------10FEB11---------------12FEB11
M1-------------4---------13FEB11---------------16FEB11
M2-------------5---------18FEB11---------------21FEB11
M2-------------6---------19FEB11---------------24FEB11
M2-------------7---------26FEB11---------------27FEB11
i need to group the id's which are having overlapping dates and the output should be
main_group-----id--------start_date------------end_date
M1-------------1---------07FEB11---------------10FEB11------G1
M1-------------2---------09FEB11---------------11FEB11------G1
M1-------------3---------10FEB11---------------12FEB11------G1
M1-------------4---------13FEB11---------------16FEB11------G2
M2-------------5---------18FEB11---------------21FEB11------G3
M2-------------6---------19FEB11---------------24FEB11------G3
M2-------------7---------26FEB11---------------27FEB11------G4
I can give you the logic first i'll sort the start_date(already sorted in given example), then i'll compare the 2'nd id start date with 1'st id end date if it is less than the 1'st id end date, which means overlapping is there, then i'll group those 2 id's in to same group if not group them into 2 different groups.
I am about to compare Indexes and PK's(Constraint) of 3 instances.
What DBA table/s should i use best? The comparison is done to a specific schema only.
PS:Which is better dba_ind_columns or dba_objects?