Sql calculation help needed.

Hi all gurus.
I'm having problem where I need to calculate AR days.
formula is (sales of prior 3 months/90)/Ar $ amount.= Days
Data is stored in two different table.
1.Monthly data table .
CURR_MO                 REVENUE_PRIOR_MO (in Sept they will enter what was made/achieved in AUG)
JANUARY                                 0
FEBRUARY                          1717631
MARCH                             1591972
APRIL                             1649450
MAY                               1662600
JUNE                              1667823
JULY                              1669651
AUGUST                         1709323
SEPTEMBER                   2006983
2) Ar $ value enter each week in Balance sheet table
AR$            week#   period
2589570
10
07-MAR-13
2376294
11
14-MAR-13
2454919
12
22-MAR-13
2767058
13
31-MAR-13
2603831
14
05-APR-13
2759590
15
11-APR-13
2376294
16
18-APR-13
2308476
17
26-APR-13
2455142
18
02-MAY-13
2498546
19
10-MAY-13
2457499
21
23-MAY-13
2461661.79
22
30-MAY-13
2310346
23
06-JUN-13
2512139
24
13-JUN-13
2267758
25
20-JUN-13
2497566
26
27-JUN-13
2583208
27
04-JUL-13
2195667
28
11-JUL-13
2288098
29
18-JUL-13
2322778
30
25-JUL-13
2306878
31
01-AUG-13
2513741
32
08-AUG-13
2350728
33
15-AUG-13
2554842
34
22-AUG-13
2664116
35
29-AUG-13
2743931
36
05-SEP-13
2501886
37
12-SEP-13
2315477
38
19-SEP-13
I want to take sum of 3 months corresponding
Daily Rev.
June
July
Aug
3-mo Total
     59,844
      1,669,651
      1,709,323
      2,006,983
      5,385,957
Daily Rev.
May
June
July
3-mo Total
      56,076
      1,667,823
      1,669,651
      1,709,323
      5,046,797
Daily Rev.
April
May
June
3-mo Total
      55,556
      1,662,600
      1,667,823
      1,669,651
      5,000,074
Daily Rev.
March
April
May
3-mo Total
      55,332
      1,649,450
      1,662,600
      1,667,823
      4,979,873
Daily Rev.
Feb.
March
April
3-mo Total
      54,489
      1,591,972
      1,649,450
      1,662,600
      4,904,022
Daily Rev.
Jan
Feb.
March
3-mo Total
      55,101
      1,717,631
      1,591,972
      1,649,450
      4,959,053
Highlighted daily values with be divided by Ar $ amount depending on monthly daily rev.
Output should be like (roughly this not actually output)
ARDAYS
WEEK_NUMBER
          47
10
          43
11
          45
12
          50
13
          48
14
          51
15
          44
16
          42
17
          44
18
          45
19
          44
21
          44
22
          42
23
          45
24
          41
25
          45
26
          46
27
          39
28
          41
29
          41
30
          39
31
          42
32
          39
33
          43
34
          45
35
          46
36
          42
37
          39
38

I got the answer
"use the latest 3 completed months for each week"
as soon sliding window hit JUNE use june (apr-may-june)value to divide
output (coulm 1 and 2 only)
ARDAYS
WEEK#
period
AR $
          47
10
3/7/2013
2589570
          43
11
3/14/2013
2376294
Daily Rev.
June
July
Aug
3-mo Total
          45
12
3/22/2013
2454919
      59,844
      1,669,651
      1,709,323
      2,006,983
      5,385,957
          50
13
3/31/2013
2767058
          48
14
4/5/2013
2603831
Daily Rev.
May
June
July
3-mo Total
          51
15
4/11/2013
2759590
      56,076
      1,667,823
      1,669,651
      1,709,323
      5,046,797
          44
16
4/18/2013
2376294
          42
17
4/26/2013
2308476
Daily Rev.
April
May
June
3-mo Total
          44
18
5/2/2013
2455142
      55,556
      1,662,600
      1,667,823
      1,669,651
      5,000,074
          45
19
5/10/2013
2498546
          44
21
5/23/2013
2457499
Daily Rev.
March
April
May
3-mo Total
          44
22
5/30/2013
2461662
      55,332
      1,649,450
      1,662,600
      1,667,823
      4,979,873
          42
23
6/6/2013
2310346
          45
24
6/13/2013
2512139
Daily Rev.
Feb.
March
April
3-mo Total
          41
25
6/20/2013

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bq. h5. {color:#0000ff} \\ _ (2)SQL for a person see all his manager?***A person can have 2,3 managers._ \\ _ (3)need a person--->manager-->and their manager's MANAGER_ \\ _ (4)How will managers to view all employees reporting to him._ \\ {color} \\ h5. \\ {color:#0000ff}_(5)feasibility (SQL) to support the increase of salaries of employees in a department by percentage or amount wise._ \\ _ (6)SQL to update or change manager of a department/employee._ \\ {color} \\ h5. \\ {color:#0000ff}_(7)If a employee is removed-then all related details should also be removed._ \\ _ (8)to remove person and department,terminate a person from organisation_ \\ _ SHIFTING a person to different department,assign a person to a department_{color} \\ h5. {color:#0000ff}_SQL to collect all info of a person, his managers , departments and project this employee works._ \\ _ find Department which dont have managers._{color} \\ h5. \\ {color:#0000ff}_****find expenditure all projects together in terms of salary_{color}

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which interests me and trying to leran.Earlier as I stated that its a part of my school(** well frnakly speaking, it was my plan if i could
put this as an item of the school as the scope is very huge.
*(1)one employee can be in many departments(1 TO MANY) and and each department has one manager.(1 to 1)*
Created a table for EMPLOyee and department-RELATIONSHIP ---> empl_id and dept_id*
(2)Also,an employee can work in multiple items/projects(1-MANY) at a time. And a project HAS only one department.(1 to 1)
**Projects table created has codes,the Project name ,Planned budget cost/amount, start_date and end_date AND DEPART_ID
Also,Created a table for Project and Employee-RELATIONSHIP ---> proj_id and employee_id*
This is the full scenario has put above.So,i needed help as I am very confused if i have done the correct relationships.
And,these below items are my plans to allow the schema nd tables support it.
(2)how will a person see all his manager?***A person can have 2,3 managers.(EMP->MANAGER relationship TABLE)
(3)SQL to be able to show a person--->manager-->and their manager's MANAGER
(4)How will managers to view all employees reporting to him.
(5)SQL to support the increase of salaries of employees in a department by percentage or amount wise.
(6)SQL to update or change manager of a department/employee.
(7)If a employee is removed-then all related details should also be removed.
(8)to remove person and department,terminate a person from organisation
SHIFTING a person to different department,assign a person to a department
Projects /Job table EMPLOYEES TABLE-> SALARY info
--job_id
--Project_name
--Budget Amount

SQL Query Help Needed

I'm having trouble with an SQL query. I've created a simple logon page wherein a user will enter their user name and password. The program will look in an Access database for the user name, sort it by Date/Time modified, and check to see if their password matches the most recent password. Unfortunately, the query returns no results. I'm absolutely certain that I'm doing the query correctly (I've imported it directly from my old VB6 code). Something simple is eluding me. Any help would be appreciated.
private void LogOn() {
//make sure that the user name/password is valid, then load the main menu
try {
//open the database connection
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection con = DriverManager.getConnection("jdbc:odbc:LawOffice2000", "", "");
Statement select = con.createStatement();
String strTemp = "Select * From EMPLOYEES Where INITIALS = '" + txtUserName.getText() + "' Order By DATE Desc, TIME Desc";
ResultSet result = select.executeQuery(strTemp);
while(result.next()) {
if (txtPassword.getPassword().toString() == result.getString("Password")) {
MenuMain.main();
else {
System.out.println("Password Bad");
System.out.println(txtUserName.getText());
System.out.println(result.getString("Password"));
break; //exit loop
//close the connection
con.close(); }
catch (Exception e) {
System.out.println("LawOfficeSuite_LogOn: " + e);
return; }
}

The problem is here: "txtPassword.getPassword().toString() == result.getString("Password"))"
Don't confuse String's equals() method with the equality operator '=='. The == operator checks that two references refer to the same object. If you want to compare the contents of Strings (whether two strings contain the same characters), use equals(), e.g. if (str1.equals(str2))...
Example:String s1 = "foo";
String s2 = new String("foo");
System.out.println("s1 == s2: " + (s1 == s2)); // false
System.out.println("s1.equals(s2): " + (s1.equals(s2))); // trueFor more information, check out Comparison operators: equals() versus ==

SQL statement help needed

I am sure some of you will laugh lol, but I am drawing a blank and need some assistance if anyone is willing to help:
I have this query:
SELECT DISTINCT ID
FROM (SELECT productcode
FROM sforce_product2
WHERE productcode NOT LIKE 'DSXXX%'
AND productcode NOT LIKE 'DO NOT USE%'
AND productcode NOT LIKE 'MAXXXX%'
AND isactive = 'true'
MINUS
SELECT productcode
FROM vew_product_export) a,
sforce_product2
WHERE a.productcode = sforce_product2.productcode
which returns 112 ID's (which is wrong)
The inner SELECT statement:
SELECT productcode
FROM sforce_product2
WHERE productcode NOT LIKE 'DSXXX%'
AND productcode NOT LIKE 'DO NOT USE%'
AND productcode NOT LIKE 'MAXXXX%'
AND isactive = 'true'
MINUS
SELECT productcode
FROM vew_product_export
returns 106.
Am I doing something simple wrong or is my query just mangled!
TIA,
Mike

SELECT DISTINCT ID
    FROM (SELECT productcode
            FROM sforce_product2
           WHERE productcode NOT LIKE 'DSXXX%'
             AND productcode NOT LIKE 'DO NOT USE%'
             AND productcode NOT LIKE 'MAXXXX%'
             AND isactive = 'true'
          MINUS
          SELECT productcode
            FROM vew_product_export) a,
          sforce_product2
   WHERE a.productcode = sforce_product2.productcodethe above code is returning an ID column which i think most probable from the sforce_product2 table
while this query below returns the 106 value that is coming from the column productcode.
SELECT productcode
    FROM sforce_product2
   WHERE productcode NOT LIKE 'DSXXX%'
     AND productcode NOT LIKE 'DO NOT USE%'
     AND productcode NOT LIKE 'MAXXXX%'
     AND isactive = 'true'
MINUS
SELECT productcode
    FROM vew_product_exportso i think there is nothing wrong because if you will review the 112 is from the column ID while the 106 is from the column productcode.

Sql calculation help needed.

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