How to use group them by in PL/SQL

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• How to use Group by in the analytic function

  I need to write the Department that has the minimum wage in a row. She must be with analytical function, but I have problem in group by. I can't use min() without group by.
  
  Select * from (min (sal) select min_salary, deptno, RANK() ON RN (ORDER BY sal CSA, CSA rownum) of the Group of emp by deptno) < 20 WHERE RN order by deptno;
  
  Published by: senza on 6.11.2009 16:09

  Hello

  senza wrote:
  I need to write the Department that has the minimum wage in a row. She must be with analytic function

  Therefore with an analytic function? Looks like it is a duty.

  The best way to get these results is with an aggregate, not analysis, function:

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  FROM      scott.emp
  ;
  

  Note that you do not need a subquery.
  This can be modififed if, for example, you want the lowest Department with the sal for each job.

  But if your mission is to use an analytical function, that's what you have to do.

  but I have problem in group by. I can't use min() without group by.

  Of course, you can use MIN without GROUP BY. Almost all of the aggregate (including MIN) functions have analytical equivalents.
  However, in this issue, you don't need to. The best analytical approach RANK only, not use MIN. If you ORDER BY sal, the lines with rank = 1 will have the minimum wage.

  Select * from (min (sal) select min_salary, deptno, RANK() ON RN (ORDER BY sal CSA, CSA rownum) of the Group of emp by deptno) WHERE the RN< 20="" order="" by="">

  Try to select plain old sal instead of MIN (sal) and get reid of the GROUP BY clause.

  Add ROWNUM in the ORDER BY clause is to make RANK return the same result as ROW_NUMBER, every time that it is a tie for the sal, the output will still be distinct numbers. which line gets the lower number will be quite arbitrary, and not necessarily the same every time you run the query. For example, MARTIN and WARD have exactly the same salary, 1250. The query you posted would assign rn = 4 to one of them and rn = 5 to another. Who gets 4? It's a toss-up. It could be MARTIN the first time you try, and WARD the next. (In fact, in a very small table like scott.emp, it probably will be consistent, but always arbitrary.) If this is what you want, it would be clearer and simpler just to use ROW_NUMEBR instead of RANK.

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  So basically with the help of sliders, they should achieve:

  

  So I need some useful measures. Please help me. It is very important to me. I will be so grateful! Really! (Thanks for the potential aid )

  You're average over the thought of your problem and potentially headed on a path that will cause more problems that it solves.

  If you have a camera that is already busy road and you want to change the position of the camera as a path together the best way to do this would be to create a null value and parent then the camera for the null value. Pass null and all camera movements, you have put in place will follow. None of the expressions are required. It is the best way to change all aspects of a trajectory, turning the entire path, the path to the scale or move the path on any axis.

  If you really want to use 3 sliders position to move existing keyframes to a new value value + the values of the expressions will allow you to do. Just add a sliders control of three expression for the camera layer (or any layer as the null that you use as a parent) select the name of the cursor in the ECW and press on enter and rename it. Something like this will be the result.

  

  Note that I also rotation and controls are resized to this configuration. Now that you have 3 sliders, you can separate the position property to null in individual values allow expressions in each property, and the value type +, then use the pickwhip to drag your cursor named which (in my example) value of X and repeat for each operation. The value + will add the value of the slider to the current value of the position of the keyframes. The expression would look like this for X:

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  If you want to use the sliders that I would use a null value, add expression controls to null to keep position, scale and rotation, the unified camera position property and then use your sliders control of expression of the null value to change your existing path. I suggest not to do it directly on the position of the camera with separate X, Y and Z values because it will change the shape of your camera path and would be more difficult to control. You'll probably also want to create a POInull camera and use this preset to bind the point the camera of interest for the null value.

  Here's a preset , you can apply to a null value which will give complete control to the trajectory of any layer animation make you the child of this null. Search Animation preset in the field of search After Effects help, if you don't know how to use, create them, then save them.

  

  As a final gimme, here's a project CS6 using this animation preset to control the position of null is used to change a path animation camera.

  

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