SQL & PL/SQL :: Compare Previous Records With Current?
Aug 29, 2013
I am trying to set the min date if there is no gap between dates.compare previous date2 value with current date1,if they are same then my new date will be min(date1).
source data
date1 iddate2 new_date
1/2/20111234/2/2011
4/2/20111237/2/2011
7/2/201112310/2/2011
10/2/20111231/2/2012
1/2/20121234/2/2012
4/2/20121237/2/2012
12/17/20121233/17/2013
3/17/20131236/17/2013
and I am expecting the out put like this
date1 id date2 new_date
1/2/20111234/2/20111/2/2011
4/2/20111237/2/20111/2/2011
7/2/201112310/2/20111/2/2011
10/2/20111231/2/20121/2/2011
1/2/20121234/2/20121/2/2011
4/2/20121237/2/20121/2/2011
12/17/20121233/17/201312/17/2012
3/17/20131236/17/201312/17/2012
how to achieve this with SQL
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Nov 2, 2011
We have employee salary table which will have salary of an employee on daily basis (only working days). Below is the table structure:
CODEemp_salary
----------
emp_id NUMBER(15) NOT NULL
effective_date DATE NOT NULL
salary NUMBER(15) NOT NULL
Primary key - emp_id, effective_date..This table is yearly partitioned...I have to find out how long the salary is not changed for an employee from given date, and last salary. I am using below query to do this:
CODEWITH salary_tab AS
(SELECT effective_date, salary,
(CASE
WHEN (LAG (salary) OVER (PARTITION BY emp_id ORDER BY effective_date ASC) =
salary
[code]....
For emp_id 1, if we ran this query for 10/31/2011, then it has to compare the 10/31 salary with 10/29 and do the same until the salary mismatches. In this case, salary salary mismatch occurs on 10/20, so the stale salary period is from 10/31 to 10/21 which is 7 days.Below query will give that result:
CODE
WITH salary_tab AS
(SELECT effective_date, salary,
(CASE
WHEN (LAG (salary) OVER (PARTITION BY emp_id ORDER BY effective_date ASC) =
salary
[code]...
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Nov 2, 2011
We have employee salary table which will have salary of an employee on daily basis (only working days). Below is the table structure:
emp_salary
----------
emp_id NUMBER(15) NOT NULL
effective_date DATE NOT NULL
salary NUMBER(15) NOT NULL
Primary key - emp_id, effective_date
This table is yearly partitioned
I have to find out how long the salary is not changed for an employee from given date, and last salary. I am using below query to do this:
WITH salary_tab AS
(SELECT effective_date, salary,
(CASE
WHEN (LAG (salary) OVER (PARTITION BY emp_id ORDER BY effective_date ASC) =
salary
)
THEN 0
ELSE 1
END
) changed_ind
FROM emp_salary
WHERE emp_id = 12345
[code]....
The cost of this query is 1677 and it is taking around 60 msec to complete. When I run this query for around 2000 employees in a loop it is taking around 3 minutes to complete.
The main bottleneck of this query is in the with clause where I am processing the entire history instead of stopping after first change.
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Apr 12, 2013
The Table having 3 columns
col0col1 , col2
P112
P112
P102
P113
P115
I want to retrieve the changes rows only.
Output like
col0col1 , col2
P112
P102
P113
P115
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Oct 1, 2013
create table a(sourcerow number(2), test_level number(2), dpn varchar2(1), qty number(5)); T
he insert scripts are as follows:
insert into a values(1,3,'Y',5); insert into a values(2,2,'Y',4); insert into a values(3,3,'N',3); insert into a values(4,4,'Y',3); insert into a values(5,1,'N',6); insert into a values(6,2,'N',5); insert into a values(7,2,'Y',4); insert into a values(8,3,'N',2); insert into a values(9,4,'Y',2); insert into a values(10,1,'Y',3); . SQL>select * from v$version; Oracle Database 11g Enterprise Edition Release 11.1.0.7.0 - 64bit Production
My logic should have the output as follows without 5th column: sourcerowleveldpnqtyremark13Y522Y4This row in main table shouldn't be displayed in the query result as it has
dpn='N'44Y3*3=9In this row qty=9 will bedisplayed.
It will compare the value of level column with its previous row level col,if it is the parent of the current(ex.current is 4 and previous is 3 parent of 4),then it will check the dpn of previous row ,if dpn='N' then qty of parent will be multiplied with qty of current row and displayed under qty column.this row will not be displayed as dpn='N'this row will not be displayed as dpn='N'72Y4*6=24in its previous row level value is same so it will check the previous to previous row where level is 1(parent of current row) and dpn='N' ,then it will multiply the qty of that row with current row and display the value in qty column.this row will not be displayed as dpn='N'94Y2*2=4In this row qty=4 will be displayed.It will compare the value of level column with its previous row level col,if it is the parent of the current(ex.current is 4 and previous is 3 parent of 4),then it will check the dpn of previous row ,if dpn='N' then qty of parent will be multiplied with qty of current row and displayed under qty column.101Y3It will not check for the previous rows as level 1 doesn't have any parent.
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Dec 22, 2011
I need to update the current column with sum of the previous column values. Following are the creation scripts
DROP TABLE TEST_LOG;
CREATE TABLE TEST_LOG
(
[Code]....
Above query is working fine to retrieve the previous column values.But when we are updating the SUM_PRE_COLS column with those values it's not working fine.
I tried by using the following query
UPDATE TEST_LOG T SET SUM_PRE_COLS =
( SELECT LAG(T2.KEY0, 1, 0) OVER(ORDER BY T2.KEY0) + LAG(T2.KEY1, 1, 0) OVER(ORDER BY T2.KEY0)
FROM TEST_LOG T2 WHERE T2.ROWID= T.ROWID);
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May 26, 2011
We want to find out difference of data for some tables between current day & previous day. We can use query with minus operation but it will take lot of time since table size is in range from 200 to 500 GB. We have to do this exercise every day.
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Oct 28, 2010
Currently,I have this objective to meet. I need to query the database for certain results. After done so, I will need to compare the records: For example: the query return me with 10 rows of records, I then need to compare: row 1 with 2, row 2 with 3, row 3 with 4 ... row 9 with 10. The final result that I wish to have is 10 or less than 10 rows of records.
I have one approach currently. I do this within a function, hand have the variables call "previous" and "current". In a loop I will always compare previous and current which I populate through the record set using a cursor.
After I got each row of filtered result, I will then input it into a physical temporary table. After all the results are in this temporary table. I'll do a query on this table and insert the result into a cursor and then returning the cursor.
The problem is: how can I not use a temporary table. I've search through online about using nest tables. but somehow I just could not get it working.
how to replace the temp table with something else? or is there other approach that I can use to compare the row columns with other rows.
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Oct 8, 2010
I need to compare records in the two columns (varchar). I need to find almost the same names from that columns.
For instance:
'MAPE STUD' <-> MAPE STUDY
And I should see that these records are the same because different is only in the one word.
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Jun 8, 2012
SQL> select * from v$version;
BANNER
--------------------------------------------------------------------------
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
PL/SQL Release 11.2.0.1.0 - Production
CORE 11.2.0.1.0 Production
TNS for 32-bit Windows: Version 11.2.0.1.0 - Production
NLSRTL Version 11.2.0.1.0 - ProductionSET DEFINE OFF;
[code]....
10 rows selected.I want the output like as follows, all those missing date i need to carry on the last one's number
NBR_OF_S NBR_OF_C S_DATE
---------- ---------- ---------
34 40 01-MAY-12
27 29 01-APR-12
27 29 01-MAR-12
21 23 01-FEB-12
21 23 01-JAN-12
21 23 01-DEC-11
[code]....
The date value I have created for this sample is monthly, based on the condition the data value I may need to generate weekly also. That's Monthly or weekly either one.
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Jan 13, 2009
I am trying to compare records in a table in both Oracle and MSSQL database against a single standard dataset in my test case. However, I'm getting different results for each when I sort using a "order by".
select COL1 from TABLE1 order by COL1
In MSSQL, I get:
COL1
=====
A
A.
A++
A++.
In ORACLE, I get:
COL1
=====
A
A++
A++.
A.
I mean, oracle result some what makes sense, because "." has bigger ascii value than "+". But is there anyway to make the ORACLE sort order look exactly like MSSQL result?
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Dec 26, 2011
the following proble.The emp table is having 14 records.
SELECT * FROM emp ORDER BY empno;
EMPNOENAMESALDEPTNO
7369SMITH80020
7499ALLEN160030
7521WARD125030
[code]...
The emp table is having 10 records.
SELECT * FROM emp_10 ORDER BY empno;
EMPNOENAMESALDEPTNO
7369SMITH80020
7499ALLEN160030
7521WARD125030
7566JONES200020
[code]...
I have written the following PL/SQL block logic tofetch the records from the emp table and compare the records with emp_10 table to perform insert if the records are newelse to perform update the existed records in the emp_10 table.
DECLARE
CURSOR tranche_balance_cur
IS
SELECT empno,
ename,
sal,
[code]...
Execution scenario 1:
I have commented insert and update statements in that case I got the following out put.
Inserted Records4
Updated Records10
As per the logic it's giving the correct output because the cursor is fetching 14 records in that already 10 records are existed in emp_10 tableand 4 are new records.so that it's showing the count for inserted records as 10 and updated records as 4.
Execution scenario 2:
I have uncommented insert and update statements in that case I got the following out put.
Inserted Records13
Updated Records1
As per the logic it's not giving the correct output.
I tried with using TRIM function in the comparision logic to avoid spaces.
TRIM(emp_10.empno) = TRIM(tranche_balance_rec.empno)
AND TRIM(emp_10.ename) = TRIM(tranche_balance_rec.ename)
AND TRIM(emp_10.sal) = TRIM(tranche_balance_rec.sal)
AND TRIM(emp_10.deptno) = TRIM(tranche_balance_rec.deptno)
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Apr 13, 2004
I have two tables
table_1
--Emp_id--|--Sup_id--|Sup_name|--Date--|
-------------------------------------------------
--00001--|--00005 --|---ABCD--|01-MARCH-2004
--00002--|--00006 --|---BCDE--|02-MARCH-2004
--00003--|--00007 --|---CDEF--|03-MARCH-2004
--00001--|--00008 --|---DEFG--|04-APRIL-2004
--00003--|--00009 --|---EFGH--|05-APRIL-2004
table_2
--Emp_id--|Emp_name|
--------------------------------
--00001--|--QWER--|
--00002--|--ASDF--|
--00003--|--ZXCV--|
--00004--|--POIU--|
table_1 contain records on employee and the supervisor they are under at a certain date.
As some employee(00001 & 00003) have a different supervisor from different date, I'll like to extract from table_1 the record of each employee in the table that only contain the supervisor info on the most recent date.And from table_2, i'll like to extract the employee's name. These records extracted from both the tables would the be put into a new table,table_3
Example: For employee 00001, only extract record that have the most recent date which is 04-APRIL-2004 and not on 01-MARCH-2004
table_3
Emp_id|Emp_name|Sup_id|Sup_name|Date|
------------------------------------------------
00001 |--QWER--|00008 |--DEFG---|04-APRIL-2004
00002 |--ASDF-- |00006 |--BCDE---|02-MARCH-2004
00003 |--ZXCV-- |00009 |--EFGH---|05-APRIL-2004
How to write an SQL statement to perform this?
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May 16, 2013
Using 11gR2, windows 7 client machine. I need to update the table missing_volume (below), where I need to calculate the estimated_missing column. The calculation of estimated_missing column for current month needs previous month numbers (as commented inside the code below). I want the output like the first table. Notice the records start from January, hence estimated_missing for January can't be calculated, but for the the rest of the months it can be done by simply changing 'yr' and 'mnth' (commented inside the code towards the end).
yr mnth location volume actual_missing expected_missing estimated_missing
---------------------------------------------------------------------------------------------------------------------------------
2013 January loc1 48037 24 57
2013 February loc1 47960 3660 53 24
2013 March loc1 55007 78 57 28
2013 April loc1 54345 72 58 77The code:
UPDATE missing_volume g
[Code]....
The code does calculate correct number for 'estimated_missing' as I run the code for each month, but the problem is while updating the current month it also erases the record for previous month. E.g. as can be seen below, after I updated April the column only has the record for April, previous month record is gone, similarly updating March removed February, etc. I can't understand why it's happening!! Here is the output I get:
yr mnth location volume actual_missing expected_missing estimated_missing
---------------------------------------------------------------------------------------------------------------------------------
2013 January loc1 48037 24 57
2013 February loc1 47960 3660 53
2013 March loc1 55007 78 57
2013 April loc1 54345 72 58 77
why it's happening (I mean where is the flaw in the code) and how to get the desired output (first table).
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Jul 10, 2013
In the following query which is highlighted ,I need to consider the records which have T.CURRENT_STATE='COMPLETE' AND 'CMPSCSRC' AND 'FINISHED' when M.MAINTAINED_FLAG = 'Y' AND S.SALE_LOCATION_ID = 118443 .So when i tried to write by using case stmt as follows it is giving me records only with T.CURRENT_STATE='COMPLETE'.But i want the records that satisfies all three current_states .
SELECT INI.UPC_ID,S.SALE_LOCATION_NAME,S.SALE_LOCATION_ID,I.KEYCAT_ID AS INITIAL_KEYCAT_ID,M.XLONG_NAME AS INITIAL_KEYCAT_NAME,
CASE WHEN M.MAINTAINED_FLAG = 'Y' THEN 'MAINTAINED' ELSE 'NON MAINTAINED' END AS INITIAL_MAINTAIN_DESC,
I.APPROVAL_USER_ID AS INITIAL_APPROVED_USER_ID,I.APPROVAL_DATE AS INITIAL_APPROVAL_DATE
[code]...
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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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May 30, 2012
What is the difference between the following . In my schema all are giving the same results with some different format
SQL> SELECT sysdate , current_date , current_timestamp , localtimestamp from dual;
SYSDATE CURRENT_DATE CURRENT_TIMESTAMP LOCALTIMESTAMP
----------- ------------ ------------------------------------------------- -------------------------------------------------
5/30/2012 8 5/30/2012 8: 30-MAY-12 08.27.22.037703 AM -04:00 30-MAY-12 08.27.22.037703 AM
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Sep 22, 2010
I need to verify if the current date is grater than the 15th of the current month. If its grater than the 15th of the current month i need to do an action or if else its lesser than 15th of the current month i need to do an other operation.
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Jan 23, 2013
I have got a procedure that successfully creates an oracle external table and populates it with the contents of a file. This works fine until I have a situation where one of the fields is a VARCHAR2(2) and I try to insert say, a 5 character value. When this happens the record in question does not get populated in the external table (and rightly so), but I could do with working out if there is a discrepancy in the number of records in the file and the number of records that actually make it into the table so I could inform the user that there is a problem.
I have attached the code that creates the external table and populates it.
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Jan 15, 2013
The main condition in SQL is like this.
SELECT TO_DATE (TO_CHAR (doc_date, 'MON-YY'), 'MON-YY') "INV_MTH",
SUM (inv_amt) INV_TOTAL
FROM table_x
WHERE doc_date BETWEEN TRUNC (SYSDATE, 'YYYY')
AND LAST_DAY (
ADD_MONTHS (TRUNC (SYSDATE, 'YYYY'), 11)
);
My Output from if run in JAN as of now 16 Jan.
INV_MTHINV_TOTAL
Jan-136260830.42
I want an sql until previous day of that month for example 15 Jan and another sql until day before previous day of that month for example 14 Jan.
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Dec 29, 2010
How to get the previous value of row with calling function to add value in SELECT statement for the row value.
Consider the example Table A1 having column a with values 1,NULL,NULL,NULL
SELECT CASE WHEN a IS NULL THEN (prev_row_value+function_return_Value) ELSE a END as A from A1
And my result-set should be like
a
----------------------
1
1+(Return Value Of Function)
Prev_Row_Value+(Return Value Of Function)
Prev_Row_Value+(Return Value Of Function)
Below is sample code but doesn't fulfill my criteria
[code]....
Output is
A A2
---------------------------
1 1
3
3
3
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Jun 4, 2012
i want to know the all scn number's that are generated yesterday or in any previous day? how can i achieve it?
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Aug 21, 2012
i need to multiply with previous row value?
my table have about to 100 columns and lakhs of rows
Ex:
date adj
------ -----
8/21/2012 1
1/1/2012 1
12/1/2011 0.5
8/1/2011 0.5
[code]....
My requirement is multiply the existing adj by adj
adj value coming as 0.5
present year always 1
Ex:
date adj
------ -----
8/21/2012 1
1/1/2012 1
.
.
12/1/2011 0.5
8/1/2011 0.5
[code]....
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Mar 11, 2013
Is it possible for me as a DBA to find IP address of the client who ran a specific transaction or query in past?
Oracle server version I'm using is 11g.
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Nov 3, 2010
i have tablestructure like this
empno ename sal
1 sam 1000
2 tom 2000
3 ric 3000
4 mac 4000
5 doy 5000
i want TO WRITE SELECT QRY WHICH WILL GO like this
empno ename sal prevemp prevename presale
1 sam 1000 0 0 0
2 tom 2000 1 sam 1000
3 ric 3000 2 tom 2000
4 mac 4000 3 ric 3000
5 doy 5000 4 mac 4000
means when each current row executes it shld show details from previous row also means when details of tom is executing it also shows sam details
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Jun 28, 2013
Is it possible to get cumulative sum of the same column? I am trying to get a value for COL6... it is dependent on the values of previous row
COL6 Formula:
IF COL2 = 'A' THEN
IF 100 - [SUM_COL6] > COL5 THEN
COL5
ELSE
(TRUNC(100 - [SUM_COL6] / COL4) )* COL4
END IF
[code]....
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Mar 8, 2011
I need to get data from a table in which dates is equal from previous month. The dates in this table has a formula DD-MMM-YY (CRE_DTTM is the name for date column).
I've already achieve getting data from the previous month by using this formula:
(to_char(CRE_DTTM,'MON')) = UPPER(to_char(add_months(trunc(sysdate,'MONTH'),-1), 'Mon'))
My problem now is what if the current month is for example JAN 2011.. I need to get the data from DEC 2010. How can I query the previous year in this case?
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Jun 25, 2013
CREATE TABLE F_TIME( PERIOD_ID NUMBER, PERIOD_NAME VARCHAR2(30 CHAR), PERIOD_YEAR NUMBER, PERIOD_TYPE VARCHAR2(30 CHAR), CREATION_DATE DATE, UPDATE_DATE DATE, UPDATE_BY NUMBER); SET DEFINE OFF;Insert into F_TIME (PERIOD_ID, PERIOD_NAME, PERIOD_YEAR, PERIOD_TYPE, CREATION_DATE, UPDATE_DATE) Values (16, 'Q4', 2012, 'q', TO_DATE('04/20/2013 17:41:28', 'MM/DD/YYYY HH24:MI:SS'), TO_DATE('04/20/2013 17:41:28', 'MM/DD/YYYY HH24:MI:SS'));Insert into F_TIME
[code]...
if i pass 30 then it will return period id=16 data
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Dec 15, 2011
I take a select into a cursor and process it record by record.I have to do sum based on a column and display row by row by using dbms_output.put_line .... So the sum has to happen based on a column. Based on the column value i need to display the cumulative sum as well.
Example:-
col1 col2 amount
DL AADD 25
DL BBCC 10
DL BBRR 15
Sum value for DL ----- 50
TX ADED 20
TX EDWW 60
Sum value for TX ----- 80
All the above data should be displayed using DBMS_OUTPUT.PUT_LINE in a pl/sql code. I use cursor to take the values from the table but the problem i face is .... I am not able to display the sum based in the col1 values.
Since i use the cursor .. i took the col1 values in to a variable and checked every time
old_variable = new_variable
if yes then continue the sum
else
display the sum value.
once i get the above check satisfied i am loosing a new col1 row in the check. The next loop only run for the new col1 values -1( which is used in the check loop).So is there any better way to get the solution or is there a facility to store the previous loop values in a cursor ? so that i dont have to loose that one row of data.
I am not able to come up with proper loop so which can identify that the col1 has changed and you have to display the sum value.
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Aug 17, 2012
How to achieve "Prev_Value" column as shown below without using ORACLE analytic functions
I have records stored in table for various categories and based on ID / Name / Office / Product / Category combination I want to achieve previous value column through efficient SQL query
Test Scripts as below
CREATE TABLE TEST_Prev
(
ID1 NUMBER(3),
Name1 VARCHAR2(10),
OFFICE VARCHAR2(20),
PRODUCT VARCHAR2(20),
Overall VARCHAR2(20),
DATE1 DATE,
VALUE1 NUMBER(1)
);
commit;
[code]......
Expected output as in attached sheet.
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