Subtracting ROW 2 FROM ROW 1

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How do I subtract rows from rows? Basically, a group by rollup but with subtraction?

Dont know where to begin. Basically, for every change at TABLE_NAME, subtract row 2 from row 1.

TABLE_NAME          REPORT_DATE COUNT_ROWS
dat_accounts        2019-10-08  10769524
dat_accounts        2019-10-06  10723077
dat_acct_events     2019-10-08  28196
dat_acct_events     2019-10-06  28179
dat_charges         2019-10-08  211955563
dat_charges         2019-10-06  211262985
dat_clinical        2019-10-08  10808351
dat_clinical        2019-10-06  10761904
dat_desk            2019-10-08  114
dat_desk            2019-10-06  114
dat_insurance       2019-10-08  10769524
dat_insurance       2019-10-06  10723077
dat_MRI             2019-10-08  11993228
dat_MRI             2019-10-06  11946781
dat_status_events   2019-10-08  178600
dat_status_events   2019-10-06  178600
dat_transactions    2019-10-08  70783124
dat_transactions    2019-10-06  70644574

For the given data where the REPORT_DATE for 1st row is always 2019-10-08 and 2nd row is always 2019-10-06 for the rows with the same TABLE_NAME

select t1.table_name, t1.count_rows - t2.count_rows
from T t1, T t2
where t1.table_name = t2.table_name
and t1.report_date = to_date('2019-10-08', 'YYYY-MM-DD')
and t2.report_date = to_date('2019-10-06', 'YYYY-MM-DD');

If the REPORT_DATE can be any arbitrary date but the 1st row date is always greater than the 2nd row date:

select t1.table_name, t1.count_rows - t2.count_rows
from T t1, T t2
where t1.table_name = t2.table_name
and t1.report_date > t2.report_date;

Solved: Subtracting ROW-1 in Column A with ROW-2 in Column , Solved: Hi, I want to subtract 2 numbers in the below format Thank you in advance A B Difference Formula 79 238 -14 252-238' (A2-B1) 252  How to subtract columns in Excel. To subtract 2 columns row-by-row, write a minus formula for the topmost cell, and then drag the fill handle or double-click the plus sign to copy the formula to the entire column. As an example, let's subtract numbers in column C from the numbers in column B, beginning with row 2: =B2-C2


Provided rows are logically ordered by REPORT_DATE

   select * 
   from (
       select TABLE_NAME, REPORT_DATE
        , COUNT_ROWS - lead(COUNT_ROWS) over(partition by TABLE_NAME  order by REPORT_DATE) DELTA
       from mytable) t
   where DELTA is not null;

How to subtract row 1 of matrixA from row 2 of matrixB (matrices are , I want to subtract the first row of matrixA from the second row of matrixB for each participant (matrices are of same size). matrix sizes equal  Then, do a window max of the two calcs. (The calc for each row will have either the test score, or null.) So see sheet 1. The difference betweent he two spills out for each row, so if you want it to show up on only one row, see sheet 2.


This will get you a diff between row_2 - row_1:

SELECT 
 o.TABLE_NAME
,o.REPORT_DATE
,o.COUNT_ROWS
,(SELECT i.COUNT_ROWS FROM TABLE_NAME i WHERE i.TABLE_NAME = o.TABLE_NAME AND i.REPORT_DATE < o.REPORT_DATE) as DIFF
FROM TABLE_NAME o

You can add a GROUP BY to show just the diff and table_name:

SELECT 
 o.TABLE_NAME
,(SELECT i.COUNT_ROWS FROM TABLE_NAME i WHERE i.TABLE_NAME = o.TABLE_NAME AND i.REPORT_DATE < o.REPORT_DATE) as DIFF
FROM TABLE_NAME o
GROUP BY o.TABLE_NAME

If SQL complains about the GROUP BY and columns not being included, you could insert to a temp_table and then query/ group by from that.

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Fact Mastery: Addition & Subtraction, Grades 1, Page 46 Row1: 2, 2, 1, 4, 2 Row 2: 4, 5, 1, 3, 4 Row 3: 3, 5, 3, 3, 5 Page 47 Fast Facts 21 Row 1: 4, 4 Row 2: 5, 2 Row 3: 4, 3 Row 4: 3, 3, 4 Row 5: 5, 5, 3 Fast  The sum of row number minus other rows in the first 11 subtractions is 23 such as 22+1, 2+21. However, starting from row 12 - then the sum is 45 which is adding 22 to the 23, and then starting from 33 the sum is 67 which is 45+22, so on.


(a) What matrix E has the same effect as these three steps? Subtract , Subtract row 1 from row 2, subtract row 1 from row 3, then subtract row 2 from row 3. (b) What single matrix L has the same effect as these three reverse steps? 4a. First, subtract the value in cell B1 from the value in cell A1. 4b. Next, select cell C1, click on the lower right corner of cell C1 and drag it down to cell C6. Take a look at the screenshot below. To subtract a number from a range of cells, execute the following steps. 5a. First, subtract the value in cell A8 from the value in cell A1.