sql - Oracle Minus - From a list of values, how do I count ONLY non reversed values -

-

I have a list of payment transactions in a table, including payment reversal, payment reversals have not been flagged, so I It is to be assumed that if any deduction is equal to an existing transaction then it is a reversal

I should only count the transaction which was not reversed.

For example, from a list of transactions. 5 5 -5 (It is inversion for 5 transactions, hence a 5 transaction is still valid) 10 -10 (this is inverted for 10 transactions, so no 10 transactions are not valid) 15 15 15 -15 (This One is inverted for 15 transactions, so two 15 transactions are valid) 20

I want a list which

5 15 15 20

i There were four transactions that were not reversed.

Here are some test codes, my attempt does not work 

  Make tab check_minas (name_id number (4), trans number (4), well number (2)) ; Insert in check_minas values ​​(1,1,5); Insert in check_minus values ​​(1,2,5); Insert check_minus values ​​(1,3, -5); Insert check_minus values ​​(1,4, 10); Insert in check_mineas values ​​(1,5, -10); Insert in check_minas values ​​(1,6, 15); Insert check_mins in values ​​(1,7, 15); Insert check_minus values ​​(1,8, 15); Insert check_minas values ​​(1,9, -15); Insert into check_minus values ​​(1,10,20); Committed; - not using select_nid, val from check_minus where val & gt; 0 - Positive transactions and (name_id, val) (Choose val_l, val (val) val from check_minas where val & lt; 0 - negative transactions); - Select from zero name_id, check_manas where val & gt; 0 - Select positive name from the zero-check_minnas, select ABB (val) where the wall < 0 - Negative Transactions

Monthly work use a different set instead it Try: 

  on select_inumber () partition by name_id, name_id, val order by value), name_id, check_minas val from which val & gt; Select zero_number () name from 0 to zero by check_minus (name_id by partition, name_id, val order by val), name_id, abs (val) where val & lt; 0

generates this: 

  Random name_id val 1, 1, 20 2, 1, 5 2, 1, 15, 3, 1, 15

Comments

Post a Comment

Popular posts from this blog

c# - ListView onScroll event -

-
I am programming a simple C # application, and I need a Scallow event on the list view. So I inherited the original ListView class created in ListviewEx witch. I found out how to locate the scroll message from WinAPI and I modified the WndProc method. Now I have this WndProc: protected override zero WndProc (Ref message message) {base.WndProc (Ref I); If (m.msg == WM_VSCROLL) {onScroll (This, New EventArgs ()); }} But the problem is, I do not know how to know about scrolling information. This data should be in wParam, but there is a LOWORD macro ++ like in C in C # and I switch to find the criteria like SB_ below, SB_ENDSCROLL, SB_PAGEUP etc. there any way Need to change the LOWORD macro from C #? Or any other way to find the necessary parameters about scrolling? You can define the WParam constants as the following: Private const int WM_HSCROLL = 0x114; Private Constant WM_VSCROLL = 0x115; Private contact int SBHOZZ = 0; Private Consultant SB_VERT = 1; Private Con...
Read more

PHP - get image from byte array -

-
I am trying to create a back-end for my mobile application. I am sending the content of an image in the body of the HTTP request (output stream) as a byte array, I want to read this stream of bytes in PHP scripts and take back an image. Can anyone tell me how can I do this? Thank you. You can obtain the request body $ body = Reading from file_get_contents ('php: // input'); What you do with that data Depending on you, you can write the data in a file as you mentioned that this is image data, you can drop the data into the object can do. Another option is to use and load the image.
Read more

Linux Terminal Problem with Non-Canonical Terminal I/O app -

-
I have a small app written in C to run on Linux. Part of the app accepts user-input from keyboard , And it uses non-canonical terminal mode so that it can respond to each keystroke. The section of the code that accepts input is a simple task that is called repeatedly in the loop: char get_input () {char C = 0; Int res = reading (input_tamille, & amp; c, 1); If (RSS == 0) 0 returns; If (res == -1) {/ * snip error handling * /} return c; } It reads a letter from the terminal if there is no input within a given time limit, (c_cc [VTIME] value in the vocabulary structure), read () 0 And get_input () is called again It all works very well, I have recently discovered that if you run this app in a terminal window, and then the app Close the terminal window without ending, the app will not exit Received, but CPU intensive launches into an infinite loop, where the read () returns 0 without waiting continued. So how can I get out of the apple if it runs from the terminal win...
Read more