I have a case that I want find the duration for each "state_id", by subtracting its change_time from the time just below it.
So I want to generate a new column that duplicates the column "change_time" and shifting all values one row up, so the change_time #2(in red) would come next to change_time #3(in red).
Is there a way to shift that column one row up?
After a lot of thinking and researching. I have solved it with the following steps:
Sort you columns of interest from A-Z (in my case sort: ticket_id, then history_type_id, then stat_id)
make a first new index column starting from 0 using "Index column from 0".
make a second new index column starting from 1 using "Index column from 1".
merge your query with itself using "merge query" based in the two new indices.
expand the merged query for the date column only.
Now you will have a new date column, duplicated from the old one with a shift of one row.
2)
Related
Please have a look at the following data example:
In this table, I have multiple columns. There is no PRIMARY KEY, as per the image I attached, there are a few duplicates in STK_CODE. Depending on the (min) column, I want to remove duplicate rows.
According to the image, one stk_code has three different rows. Corresponding to these duplicate stk_codes, value in (min) column is different, I want to keep the row which has minimum value in (min) column.
I am very new at sqlite and I am dealing with (-lsqlite3) to join cpp with sqlite.
Is there any way possible?
Your table has rowid as primary key.
Use it to get the rowids that you don't want to delete:
DELETE FROM comparison
WHERE rowid NOT IN (
SELECT rowid
FROM comparison
GROUP BY STK_CODE
HAVING (COUNT(*) = 1 OR MIN(CASE WHEN min > 0 THEN min END))
)
This code uses rowid as a bare column and a documented feature of SQLite with which when you use MIN() or MAX() aggregate functions the query returns that row which contains the min or max value.
See a simplified demo.
I want to highlight the cells in a Google Spreadsheet with the highest values based on a dynamic range.
I've got two columns: column K and column L. Column K contains sums of data, column L contains either 'Yes', 'No' or 'Maybe'.
I want to use conditional formatting to highlight the rows with the highest value in column K AND which contain 'Yes' in column L (so, the highest value in column K is only calculated from the rows that contain 'yes' in column L as well). It is possible that there's multiple highest values that have 'Yes'. So while the absolute highest value in the whole of column K can be found on (for example) K100, and the second-highest is found on K59, if L100 doesn't include 'Yes' on column L but L59 does, row 59 will be highlighted.
I've got this code for highlighting whenever L is equal to 'Yes':
=$L:$L = "Yes"
And this code for highlighting the highest value in column K:
=$K5=MAX($K$5:$K$999)
But I have to combine them somehow.
I think that some kind of IF- or AND-statement will be the solution, but I don't know how to dynamically call on the range I need. The position of the Yes'es change based on other values and are not necessarily below each other. For instance:
=IF($L:$L="Yes";MAX($K1;$K3;$K4;$K9))
Where '$K1;$K3;$K4;$K9' represents the dynamic range.
try like this for range A5:Z:
=($L5="Yes")*($K5=MAX($K$5:$K))
Having imported an excel sheet into power query, I need to tidy it up by changing the value of a particular cell.
At the moment that cell has a null value, but there are other null values in the same column that I do not want to change. – So I cannot replace all of the null values in that column with another value.
I also cannot correct that particular cell in the source excel file (there are hundreds of them, which were created before I arrived).
I basically need some syntax for example that sets the value of cell H2 to “Jeep”, but not to change any other cells.
Very grateful for any insight.
One way would be:
In the Power Query Editor:
Add an index column starting from 1 (tab Add Column)
Add a Conditional column: If [Index] = 2 then Jeep else [H] (tab Add Column)
Delete Index column and [H] Column
Rename Custom column to [H].
I am fairly new to powerbi and I need your help in one task on which I am stuck on.
Basically I have two tables and I need to compare the value from table one with a row of table 2 and return the output.
Table 1
I need to compare values in column a & b and get a match from table 2.
For example if row 1 has BY Green & BS HIGH then I need to check this value from matrix table below and return the output in column value as either 0 or 1.
Table 2
As you can see the Table 2 first row has value BY Green and BS low has a value '0'
Try this...
Index() returns a value from the matrix (in purple) based upon the intersections of the two match()'s. The first is the Vertical match in from the Table1:Col A; the second is the Horizontal match from table1:Col B. The value found at that intersection is returned.
... My apologies ... just saw this was a BI request... no worries...
First, Need fixup table2 as a lookup file:
First, click a cell in table 2 (don't edit), then Data menu >frm table/range, will bring up the Power Query window. Select columns B (not A) through Col F), then in the PQ Transform menu > Unpivot to create the new lookup table. this can either be saved as a new table or be used by reference.
Next, open and merge Table 1 PQ_Table 2 (Be sure to select BOTH Columns in BOTH Tables, in the same order). Then, expand the table tab following the merge expand the table tab. I only selected the value to return but you can return all the values to verify, then delete the unneeded columns.
Hope this helps...
Good Luck.
I have a SQLite database.
When writing move rows function, which moves rows from one table to another I need to have a query for incrementing column with name "row" which is INTEGER PRIMARY KEY, but there is an error. It is critical to have indexing with row in my task. The condition in example is WHERE row >= 2 because i am inserting rows from other table into position 2.
"UPDATE '4' SET row = row + 1 WHERE row >= 2"
Error("19", "Unable to fetch row", "UNIQUE constraint failed: 4.row")
The problem's origin WHERE row >= 2" part. How to overcome this problem?
The problem's origin WHERE row >= 2" part.
I'm inclined to disagree. The problem is not with which rows are updated, it is with the order in which they are updated.
Very likely SQLite will process rows in rowid order, which almost certainly is also increasing order of the row column, since that column is an auto-incremented PK. Suppose, then, that the table contains two rows with row values 2 and 3. If it processes the first row first, then it attempts to set that row's row value to 3, but that produces a constraint violation because that column is subject to a uniqueness constraint, and there is already a row with value 3 in that column.
How to overcome this problem?
Do not modify PK values, and especially do not modify the values of surrogate PKs, which substantially all auto-increment keys are.
Alternatively, update the rows into a temporary table, clear the original table, and copy the updated values back into it. This can be extremely messy if you have any FKs referencing this PK, however, so go back to the "Do not modify PK values" advice that I led off with.
First: '4' is not a table name. The UPDATE statement expects a table name where you have written '4'. For example:
UPDATE table1 SET row = row + 1 WHERE row >= 2
Second: Just do not use row as a primary key (or unique key, for that matter) when it obviously is not meant as primary key but as a changing row number. Create a separate column that can be used as primary index of that table instead.