SQL & PL/SQL :: Time Calculation - Make Varchar To Timestamps But Caught With Round Up / Down?
Apr 12, 2011
calculating values of A & B
(both these fields a_std and a_time are coming as varchar from the parent table in a cursor.(basically they are time period and actual arrival time respectively)
i was juggling with the attempt to make varchar to timestamp or date..but caught with Round up /Round down)
Formula ->
A = Round down [A_TIME - A_STD]
B = Round up [A_TIME) - 10 minute + A_STD]
where
A_TIME VARCHAR2(8) N Time (Format" HH:MM AM/PM") eg "3:50 PM"
A_STD VARCHAR2(5) N Standard time (Format" HH:MM") eg "1:00"
Allowed values for A & B after round up/down = multiple of 10 ( 11:00,11:10,11:20 etc.)
is there a prebuilt function that will round say the time of a sysdate up or down 5 mins? so i entered 5:32pm i would want it to round it down to 5:30pm
I have time fields that have been converted from a 12hr clock to a 24hr clock and these fields hold only the time...no date.
I need to be able to determine the difference between column A and B eg.
Column A: Column B: 11:00 14:00
I can remove the ':' by using the replace command, but as I need to run on a actual 24hr clock I am not sure how to tackle the calculation as it is not the full oracle datetime format.
SELECT FROM_TZ(CAST(TO_DATE('1999-12-01 11:00:00', 'YYYY-MM-DD HH:MI:SS') AS TIMESTAMP), 'gmt') AT TIME ZONE '+05:30' "Time at Time zone" FROM DUAL;
Time at Time zone 01-DEC-99 04.30.00.000000 PM +05:30
My requirement is that
I want to add 2 hours to DateTime i get here i.e. add two hours in result and display the resultant date and tine in time zone '+05:30'. I also want to check that the resultant time falls in business hours (9 am to 6 pm).
Currently I am working on payroll system where I have to calculate employees working hours/late coming hours/early going hours against its roster which is defined in the beginning of every month/week.
In roster form user define shift of every employee like
Code Name Shift 7 Saad Nafees A - 09:00 17:00 492 Muhammad Nasir Shahzad B - 17:00 01:00 243 Muhammad Tahir C - 01:00 09:00
Roster table structure
code varchar2 name varchar2 Shift date Remarks varchar2
shift table structure
code varchar2 timein date timeout date latetime date Hdaytime date
Oracle stores both date and time information in date data type, suppose today user change shift timings from 17:00 to 17:30 or user change timein/timeout in attendance form then oracle will store current date with user define timings.
Now this is the main problem which I am facing because whenever you calculate difference between timein and timeout or compare with its roster then output comes wrong because oracle returns total no of hours whenever you minus two dates.
elapsed time = time spent on waits + time CPU was used
Total time during snaps = Elapsed time + (may be) time waited for CPU...In AWR is it possible to draw such equation? I can see that the AWR report has following elements
1) End Snap time - Begin Snap time 2) DB time - as mentioned at the top of AWR report 3) DB CPU - in "Top 5 Timed Foreground Events" (I assume this is 'CPU used by sesson timing' in statspack) 4) Total of time for all Statistics in "Time Model Statistics" 5) BUSY_TIME + IDLE_TIME - "Operating System Statistics"
Time between 2 snapshots? or what else? Also for which seconds to multiply to 'DB Time(s)' per second and 'DB CPU(s)' per second in Load Profile to get the db time and CPU time?
I want to make report of processing time for tasks. Every task has several stages and connected with them modification dates. I need calculate total processing time for every task.
In my calculations i have to consider only "working" hours. There is time window table (For example working hours: from 8 a.m to 4 p.m, but can be different thats why i use table with id - different id = different time window). Scripts i used to simulate problem:
create table t ( id number, s_date date, e_date date ); declare [code]........
table t constrains "working" hours:
12011-04-10 08:00:002011-04-10 16:00:00 12011-04-11 08:00:002011-04-11 16:00:00 ... but could be also
table w contains tasks history processing by team (8 hours for tenet, rest time (out of hours defined in table t) of working trough incident should be ignored/omitted in calculations):
At the beginning I tried this query, but I don't know how consider/dose time window from table t
select id, change_date, round( to_number(change_date-lag(change_date) over (partition by id order by change_date))*24*60*60) sec from w;
12011-04-10 10:00:00 12011-04-11 02:08:1658096 - sholud be 21600 (sum time only for 2011-04-10 16:00:00) 12011-04-11 16:23:1051294 - should be 28800 (sum time only from 2011-04-11 08:00:00 to 2011-04-11 16:00:00) 22011-04-12 08:12:30 22011-04-13 00:40:1559265 - should be 28050 (sum time only from 2011-04-12 08:12:30 to 2011-04-12 16:00:00) 32011-04-14 09:37:54
i have a Windows Forms .Net 2.0 App which defines AppDomain.CurrentDomain.UnhandledException handler.When an app thread throws an exception this exception is caught or handled by this method.
The problem is that if i define an OracleConnection, open and close it and then the thread throws the exception this is not handled and app finishes...
Why i can't handled this threads exceptions if i use OracleConnection?
I have to implement round robin algorothim in sql script for allocation of some items to another entity. Not really sure how to do that and if there would be locks while selecting the one which is already being updated and so...!
how to go about it when the number of users involved would be very high to whom the items would be allocated in round robin function.
We are working on a performance tuning aspect, where in a table has a LONG datatype and number of round trips are increasing based on the number of rows fetched.i.e one round trip for every row.
Background.
1. created a table with LONG data type. 2. inserted bulk load of data. 3. set auto trace on and executed below tests..
SQL> select count(*) from test_long;
COUNT(*) ---------- 6110
SQL> desc test_long Name Null? Type ----------------------------------------------------------------------------------------------------- -------- ---------------------------------------------------------------------------- ID NUMBER TESTLONG LONG [code].....
but on LONG column, irrespective of the array size the round trips does not reduce.
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?
I ran this following query and somehow i feel the results are wrong.
SQL> select to_char(starttime,'dd-mm-YYYY hh24:mi:ss') from report where dateofmonth between to_timestamp_tz('22-Apr-2013 12:00:00','dd-mm-YYYY hh24:mi:ss') and to_timestamp_tz ('23-Apr-2013 14:00:00','dd-mm-YYYY hh24:mi:ss');
SQL> select to_timestamp_tz(starttime,'dd-mm-YYYY hh24:mi:ss') from report where dateofmonth between to_timestamp_tz('22-Apr-2013 12:00:00','dd-mm-YYYY hh24:mi:ss') and to_timestamp_tz ('23-Apr-2013 14:00:00','dd-mm-YYYY hh24:mi:ss');
view the below select statement..why it's adding extra zero's...
select to_timestamp('2001-05-22 12:00:18.600','YYYY-MM-DD HH:MI:SS.ff3AM') from dual output: 5/22/2001 12:00:18.600000000 PM ---why it's adding extra zeors's my output should be as " 5/22/2001 12:00:18.600 PM"
Have a table which has 3 columns id,name,time where time is of datatype timestamp and it stores the time when the row was inserted. Need an query which accepts 2 parameters as input Ex: Start_Time,End_Time and all the rows in between the above mentioned timestamps must be deleted.
I have to create the following table. The fields Trend_Date, Price and Trend are already given. I have to calculate the field permanently and to insert the value in this permanent table.
Fields:
The field price belong to the value of a product during the trade. The field trade_date belongs to the moment of the trade. The field trend belongs to the future behavior of the the price. Here, the price of the present moment is compared to the following price (possible characteristics: 'UP', 'DOWN', 'STABLE'). The field permanently belongs to the time (in seconds) how long the value of the field Trend_Date (depending on the price) is still true.
For example:
Row 1: The trend in row 1 is 'UP' and it has a price of '11'. Until row 3 this remains true (the price is greater or equal to 11). In this case, the difference between row 1 and row 3 are 9801 (rounded) seconds.
Row 2: The trend in row 2 is 'DOWN' and it has a price of '12'. This remains true till to the end (the price is never greater than 12) In this case, the difference between row 2 and row 11 are 97346 (rounded) seconds. To calculate the 97346 seconds the field has to consider that between row 2 and row 11 are two days. There will be no trade between 18:00 and 07:00 o'clock. This belongs to 7 hours for each days, in seconds (2*46800) 93600. -> 190945-93600 = 97346s
Row 6: The trend in row 6 is 'UP' and it has a price of '5'. This remains true till to the end (the price is never smaller than 5) In this case, the difference between row 6 and row 11 are 65729 (rounded) seconds. To calculate the 65729 seconds the field has to consider that between row 65729 and row 11 are one days. There will be no trade between 18:00 and 07:00 o'clock. This belongs to 7 hours for each days, in seconds (1*46800) 46800. -> 112528-46800 = 65729s
Row 9: The trend in row 9 is 'STABLE' and it has a price of '8'. Until row 10 this remains true (the price is equal to 8 ). In this case, the difference between row 9 and row 10 is 14418 (rounded) seconds.
Row 11: Is empty because there are no values to compare.
i m creating the dynamic table every month to maintain the particular month data seperately .when the records getting inserted in the table,trigger will automatically insert the records in the dynamic table. only date alone(without timestamp) getting inserted in the dynamic table from staging. so by default ,00:00:00 is getting appended with date instead of actual timestamp. tried select to_date(to_char(:new.ACTN_DATE,'YYYY-MM-DD HH24:MI:SS'),'YYYY-MM-DD HH24:MI:SS') INTO v_temp_actn_date from dual; but i am getting only date alone . in my table and dynmaic table datatype for date column is date
I'm trying to generate count of the number of entries in a table for each day.The problem is the date column is of datatype timestamp and looks like this "2006-12-30 18:42:03.0"
How would I generate a report of number of entries in the table for each date (I'm not intrested in the "time" only the "date" i.e YYYY-MM-DD)?
SELECT COUNT(*) FROM my_table_name WHERE my_date_column LIKE '2006-12-30%' GO
It returns zero rows ( and I kno there are rows in the table) I'm using Oracle 10g.
how to caluclate days between two dates of single timestamp filed and with this
query Select * from m_activity_transaction where actn_opp_id in ( Select actn_opp_id from m_activity_transaction where ACTN_ACTV_ID = 218 Group by actn_opp_id
[code]...
and i nedd to caluclate no.of days between two dates like 27-JAN-12 11.06.20.000000 AM and 08-FEB-12 05.32.54.000000 PM where actn_id is unique AND ACTN_OPP_ID IS NOT UNIQUE.
