Substract date from date?

hello,
i try to substract a date from sysdate and format it like 'HH24:MI:SS'.
SELECT ID
, to_char (DLC,'DD.MM.YY HH24:MI:SS') as DateLastChange
, to_char (sysdate,'DD.MM.YY HH24:MI:SS') as ToDay
, to_char ((to_date(SYSDATE,'DD.MM.YY HH24:MI:SS') - to_date (DLC ,'DD.MM.YY HH24:MI:SS'))) as Time
FROM TEST_TABLE
result:
ID | DateLastChange | ToDay |Time
1045 | 14.02.03 17:24:04 | 27.02.03 12:29:30 | 10
but only full day's are displayd.... i need day's and minutes
thank's for help

Hi Rainer,
if you are using Oracle9i, you can use Day to Second Interval.
SELECT sysdate, hiredate ,NUMTODSINTERVAL( TO_CHAR( sysdate - hiredate ), 'day' ) from emp;
It gives you even the fractional millisecond difference upto a precision of 9.
SQL> insert into emp(empno,hiredate) values( 100, sysdate-1);
SQL> select NUMTODSINTERVAL(to_char(sysdate-hiredate),'day') from emp where empno=100;
NUMTODSINTERVAL(TO_CHAR(SYSDATE-HIREDATE),'DAY')
+000000001 00:03:13.000000000
Regards
Elango.

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see the below examples :
ABAP Code Samples for Simple Performance Tuning Techniques
1. Query including select and sorting functionality
tables: mara, mast.
    data: begin of itab_new occurs 0,
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             mtart like mara-mtart,
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into table itab_new from mara as f inner join mast as g on
fmatnr = gmatnr where gstlal = '01' order by fernam.
Code B
tables: mara, mast.
data: begin of itab_new occurs 0,
      matnr like mara-matnr,
      ernam like mara-ernam,
      mtart like mara-mtart,
      matkl like mara-matkl,
      werks like mast-werks,
      aenam like mast-aenam,
      stlal like mast-stlal,
end of itab_new.
select fmatnr fernam fmtart fmatkl gwerks gaenam g~stlal
into table itab_new from mara as f inner join mast as g on f~matnr =
gmatnr where gstlal = '01'.
sort itab_new by ernam.
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2. Performance Improvement Due to Identical Statements Execution Plan
Consider the below queries and their levels of efficiencies is saving the execution
tables: mara, mast.
data: begin of itab_new occurs 0,
      matnr like mara-matnr,
      ernam like mara-ernam,
      mtart like mara-mtart,
      matkl like mara-matkl,
      werks like mast-werks,
      aenam like mast-aenam,
      stlal like mast-stlal,
end of itab_new.
select fmatnr fernam fmtart fmatkl gwerks gaenam g~stlal
into table itab_new from mara as f inner join mast as g on f~matnr =
gmatnr where gstlal = '01' .
sort itab_new.
select fmatnr fernam
fmtart fmatkl gwerks gaenam g~stlal
into table itab_new from mara as
f inner join mast as g on f~matnr =
gmatnr where gstlal
= '01' .
Code D (Identical Select Statements)
tables: mara, mast.
data: begin of itab_new occurs 0,
      matnr like mara-matnr,
      ernam like mara-ernam,
      mtart like mara-mtart,
      matkl like mara-matkl,
      werks like mast-werks,
      aenam like mast-aenam,
      stlal like mast-stlal,
end of itab_new.
select fmatnr fernam fmtart fmatkl gwerks gaenam g~stlal
into table itab_new from mara as f inner join mast as g on f~matnr =
gmatnr where gstlal = '01' .
sort itab_new.
select fmatnr fernam fmtart fmatkl gwerks gaenam g~stlal
into table itab_new from mara as f inner join mast as g on f~matnr =
gmatnr where gstlal = '01' .
Both the above codes essentially do the same function, but the execution time for code B is considerably lesser than that of Code A. Reason: Each SQL statement during the process of execution is converted into a series of database operation phases. In the second phase of conversion (Prepare phase) an execution plan is determined for the current SQL statement and it is stored, if in the program any identical select statement is used, then the same execution plan is reused to save time. So retain the structure of the select statement as the same when it is used more than once in the program.
3. Reducing Parse Time Using Aliasing
A statement which does not have a cached execution plan should be parsed before execution; this parsing phase is a highly time and resource consuming, so parsing time for any sql query must include an alias name in it for the following reason.
1.     Providing the alias name will enable the query engine to resolve the tables to which the specified fields belong to.
2.     Providing a short alias name, (a single character alias name) is more efficient that providing a big alias name.
Code E
select jmatnr jernam jmtart jmatkl
gwerks gaenam g~stlal into table itab_new from mara as
j inner join mast as g on jmatnr = gmatnr where
            g~stlal = '01' .
In the above code the alias name used is j .
4. Performance Tuning Using Order by Clause
If in a SQL query you are going to read a particular database record based on some key values mentioned in the select statement, then the read query can be very well optimized by ordering the fields in the same order in which we are going to read them in the read query.
Code F
tables: mara, mast.
data: begin of itab_new occurs 0,
      matnr like mara-matnr,
      ernam like mara-ernam,
      mtart like mara-mtart,
      matkl like mara-matkl,
      end of itab_new.
select MATNR ERNAM MTART MATKL from mara into table itab_new where
MTART = 'HAWA' ORDER BY MATNR ERNAM MTART MATKL.
read table itab_new with key MATNR = 'PAINT1'   ERNAM = 'RAMANUM'
MTART = 'HAWA'   MATKL = 'OFFICE'.
Code G
tables: mara, mast.
data: begin of itab_new occurs 0,
      matnr like mara-matnr,
      ernam like mara-ernam,
      mtart like mara-mtart,
      matkl like mara-matkl,
      end of itab_new.
select MATNR ERNAM MTART MATKL from mara into table itab_new where
MTART = 'HAWA' ORDER BY ERNAM MATKL MATNR MTART.
read table itab_new with key MATNR = 'PAINT1'   ERNAM = 'RAMANUM'
MTART = 'HAWA'   MATKL = 'OFFICE'.
In the above code F, the read statement following the select statement is having the order of the keys as MATNR, ERNAM, MTART, MATKL. So it is less time intensive if the internal table is ordered in the same order as that of the keys in the read statement.
5. Performance Tuning Using Binary Search
A very simple but useful method of fine tuning performance of a read statement is using Binary search addition to it. If the internal table consists of more than 20 entries then the traditional linear search method proves to be more time intensive.
Code H
select * from mara into corresponding fields of table intab.
sort intab.
read table intab with key matnr = '11530' binary search.
Code I
select * from mara into corresponding fields of table intab.
sort intab.
read table intab with key matnr = '11530'.
Thanks
Seshu

Problem Reading Data from .dat File

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198 95 70 71 93-99-99-99-99-99-99-99-99-99-99 5 17 17 17 17-99-99-99-99-99-99-99-99-99-99 1
78 95 70 69-99-99-99-99-99-99-99-99-99-99-99 6 2 1 1-99-99-99-99-99-99-99-99-99-99-99 2
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import java.util.*;
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*Note: I had to remove some of the code due to exceeding the maximum characters allowed. I THINK the error is found at the //creating an input stream section.

The input data that I included is the exact data I am trying to read...just three lines instead of the 251. There is plenty of other data surrounding the included data, but I am not concerned with it.
Here is the first 3 lines of data...
4200410577816 76-99 9 177        1 1 0 5.573125262 5 429429422MED0262      25080403915990 427322851 5789 250402859 2111                                 50 99 159 106 60 153 50 59 47-999-999-999-999-999-999                    -999-999-999-999 0 1 4025AZ   14    141010 5868 2817 9 0 04223 3 105        -9           2451644434443                                                 70 93 93-99-99-99-99-99-99-99-99-99-99-99-99 3-99-99-99-99-99-99-99-99-99-99-99-99-99-99 3     40667       40667.002004 1
4200410581753 79-9911 177        1 1 0 5.5731252 3 5 429429422MED0262      250822851 4271 486 5789 785595990 41400V4581                                50 60 106 122 153 249 159 101 101-999-999-999-999-999-999                    -999-999-999-999 0 1 4025AZ    8     81010 2043 883 9 0 04223 2 105        -9           245134824                                                     70 77-99-99-99-99-99-99-99-99-99-99-99-99-99 4-99-99-99-99-99-99-99-99-99-99-99-99-99-99 3     25444       25444.002004 1
4200410277559 67-99 3 177        1 0 0 5.5731252 3 5 229229221MED0236      25080707146827 4280 7318 73027041042506045981                                50 199 197 108 212 201   3 50 121-999-999-999-999-999-999                    -999-999-999-999 0 0 4047AZ   29    291010 2414 5409 9 0 04223 6 111        -9           1392745164542884288483950                                     57 70 95189190 61-99-99-99-99-99-99-99-99-99 18-99-99-99-99-99-99-99-99-99-99-99-99-99-99 1    141927      141927.002004 4
import java.util.*;
import java.io.*;
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          for (int pass=1; pass < n; pass++)
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                         int temp = x;
x[i] = x[i+1];
x[i+1] = temp;
}// end bubbleSort
public static void main (String[] args) throws IOException
try {
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          int count=0;
          String temp;
          int aInt;
          int med;
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          String[] pos = new String[251];
          int[][] da = new int[251][507];
          int[] daSort = new int[da.length];
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               daM[i] = 0;
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                    da[i][j] = 0;
FileInputStream fstream = new FileInputStream("dataset.dat");
DataInputStream in = new DataInputStream(fstream);
BufferedReader br = new BufferedReader(new InputStreamReader(in));
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output = new PrintWriter(new FileWriter(file));
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Dear Experts,
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The data in the database table "Zlt_mita" with fields M1 (Employee Name, Type: Char20) and M2 (Employee Code, Type Char7) are:
Plz refer the screenshot in the attached file:
My Code:
1) When I try to pull data from Dbase table by taking M2 as parameter.
     This code is succcessful and I am able to populate data in internal table it_dat.
TYPES: Begin Of ty_DAT,
                 M1   TYPE Zlt_mita-M1,
                 M2   TYPE ZLT_mita-M2,
             END OF ty_DAT.
DATA: it_dat        TYPE STANDARD TABLE OF ty_dat with header line,
          wa_dat      TYPE   ty_dat.
PARAMETERS: p_mitar    TYPE Zlt_Mita-M2.
SELECT           M1
                       M2
        FROM     ZLt_mita
        INTO       TABLE it_dat
        Where     M2 = p_mitar.
Loop at it_dat into wa_dat.
   WRITE:/2 wa_dat-M1,
              10 wa_dat-M2.
ENDLOOP.
2) When I try to pull data from Dbase table by taking M1 as parameter.
     This code is NOT succcessful and I am NOT able to populate data in internal table it_dat.
TYPES: Begin Of ty_DAT,
                 M1   TYPE Zlt_mita-M1,
                 M2   TYPE ZLT_mita-M2,
             END OF ty_DAT.
DATA: it_dat        TYPE STANDARD TABLE OF ty_dat with header line,
           wa_dat      TYPE   ty_dat.
PARAMETERS:    P_Mita    TYPE   ZLT_Mita-M1.
SELECT           M1
                       M2
        FROM     ZLt_mita
        INTO       TABLE it_dat
        Where     M1 = P_Mita.
Loop at it_dat into wa_dat.
   WRITE:/2 wa_dat-M1,
             10 wa_dat-M2.
ENDLOOP.
Why is this happening when both M1 and M2 are Type Character fields.
Looking forward for your replies.
Regards
Chandan Kumar

Hi Chandan ,
Database fetch is case sensitive ,So u need to give exact format in where condition.
Make your parameter and database in same case so that you need not worry about case sensitivity .
Check the lowecase check box in the domain .
Then declare your parameter
PARAMETERS:
P_Mita
TYPE   ZLT_Mita-M1 LOWER CASE .
You can do the vice versa also by unchecking lowercase and giving Upper case instead of lower in parameter declartion .
Regards ,
Juneed Manha

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In the equipment masters iam getting the FROM DATE & TO DATE, even when iam scheduling the info package, master data is getting loaded based on these dates. once after loading iam able to see the FROM DATE & TO DATE data at object level.
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