What is wrong here?.

This query is working fine.....
SELECT emp_id,count(emp_id)
FROM emp
group by emp_id
having count(emp_id) > 1
This query is not bringing any result....why is that?. What
is wrong in this query?.
SELECT emp_id,emp_name,emp_sal
FROM emp
group by emp_id,emp_name,emp_sal
having count(emp_id) > 1

Probably because the group by emp_id,emp_name,emp_sal
combination is unique (distinct). In other words, you do not have
any cases where you have more than one row where the combination of
all three emp_id, emp_name, and emp_sal values are the same.
EDIT: Also, I sure hope that emp_id isn't the primary key of
your emp table, or any rows returned by your first query indicates
that you have a big problem (non-unique PK).
Phil

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Perplexed as to what went wrong here

ok so im writing this prog for school and im all but finished with it xcept im running into one small problem.
i have 5 int objects each read individually by the program.
what i need to to is to ad them all together which seems like it should be simple right.
so i do it like this
private int Total;
public setTotal(int Total)
Total = intA+intB+intC+intD+intF;
all the int values are private as well
but for some reason it wont total.
am i doing something wrong here?
i tested each value with
ex:System.out.printline(intA);
etc..etc... to make sure it was reading the values set and it prints them out fine (so i know each int is holding its value)
any input would be greatly appreciated.

i have 5 int objectsint is a primitive type. You have 5 int variables. Not objects.
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Total = intA + intB + intC + intD + intF;
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db

What's wrong here?

Hi, im getting a strange output on parts 3 and 4 of my program, they are the same, when they should be different. Here is the output:
Laboratory 3 written by me..
Frog: Position = 6, hops = 100, max position = 11, min position = -1, number home = 8
-------- Part 3 --------
Experiment # 1: Frog: Position = -14, hops = 100, max position = 1, min position = -18, number home = 2
Experiment # 2: Frog: Position = 6, hops = 100, max position = 10, min position = -6, number home = 15
Experiment # 3: Frog: Position = 2, hops = 100, max position = 15, min position = 0, number home = 1
Experiment # 4: Frog: Position = -2, hops = 100, max position = 0, min position = -14, number home = 1
Experiment # 5: Frog: Position = -4, hops = 100, max position = 6, min position = -5, number home = 6
Experiment # 6: Frog: Position = 6, hops = 100, max position = 12, min position = 0, number home = 4
Experiment # 7: Frog: Position = 4, hops = 100, max position = 10, min position = -2, number home = 8
Experiment # 8: Frog: Position = 8, hops = 100, max position = 13, min position = -7, number home = 1
Experiment # 9: Frog: Position = 18, hops = 100, max position = 19, min position = -2, number home = 3
Experiment # 10: Frog: Position = 8, hops = 100, max position = 9, min position = -6, number home = 14
After 10 experiments:
Average Position = 3.2
Maximum Position = 19 // same as in part 4
Minumum Position = -18
-------- Part 4 --------
Kirby hopped 50 times.
After the experiment:
Average Position = 19.5
Maximum Position = 19 // same as in part 3
Minumum Position = -18
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package frogs;
import java.util.*;
public class Frog {
    private static Random rand;
    private int hops;
    private int numberHome;
    private int maximum;
    private int minimum;
    private int position;
    public Frog() {
        hops = 0;
        numberHome = 0;
        maximum = 0;
        minimum = 0;
        position = 0;
        rand = new Random();
         public int getHops(){
             return hops;
         public int getMaximum(){
             return maximum;
         public int getMinimum(){
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             for (int i = 0; i < n ; i++)
                 hop();
         public String toString(){
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}heres my FrogTester class: ( i think the problem is in here, not sure though)
package frogs;
public class FrogTester {
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            kermit.hop(100);
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                maxPosition = aFrog.getMaximum();
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System.out.println("After 10 experiments: " );
System.out.println("Average Position = " + (double) averagePosition/10);
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System.out.println("Minumum Position = " + minPosition);
System.out.println("-------- Part 4 --------");
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}Here's what the program is about just to be more clear:
Random walks are used to model many physical phenomena, such as an ideal gas. In the 1-dimensional case, the walker flips a coin (randomly chooses 0 or 1) and takes one step left or right based on the outcome. In this laboratory will you develop a Frog class that represents a random walk on 1-dimensional line.
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Message was edited by:
kevin123

Even though your code format is ABSOLUTELY DIABOLICAL (you not heard of indenting?) I think I can see what your prob is.
In part 4 you are not working out the average position by dividing by 10 even though there are 50 hops. (And you are not resetting the mi/max positions like the other dude said).
Seriously, next time you post remove all that useless white space and indent properly. It helps a remarkable amount.
Ted.

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Does not print the string value ? what is wrong here

Hi,
I am trying to print the string value that does not have spaces.
when I do that,I dont get what I want i.e 3334445555.
Any help in this regard is appreciated.
Thanks
Chat
import java.util.StringTokenizer;
class TestTokenizer{
public static void main(String args[]){
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Can anyone see what is wrong here?

Here we go.....I am working on an assessment at Uni. I have written the following code. It compiles with no errors.....it starts to run (ie it asks for the 2 file names to impliment the equi-join) but it doesnt seem to pass a return value. The program produces no output!!! HELP!!!
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You have to construct the second iterators inside the first while loop, otherwise you will always check against the value of the last key in the first iterator.
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     Iterator values1Iterator = relation1.values().iterator();
     while (keys1Iterator.hasNext()){
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          Iterator keys2Iterator = relation2.keySet().iterator();
          Iterator values2Iterator = relation2.values().iterator();
          while (keys2Iterator.hasNext()){
               String primaryKey2 = (String)keys2Iterator.next();
               String foreignKey2 = (String)values2Iterator.next();
               if (foreignKey1 == primaryKey2)
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     return resultRelation;
}

What is wrong here?.

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