How to select column depending on the value of?

How to select column depending on the value of?

Consider the following table. I want to write a query that selects either the blue_player_id or the red_player_id depending on the turn_of column for a given game id. Thus for game_id=1 it should return 4, for game_id=2 it should return 2, and for game_id=3 it should return 3.

Can a field ever have two different values?

A field in a specific row can never have two different values. Its one or another. If you change your query to where stop_id=1538 OR stop_id=1540 maybe you get the result that you want. Regarding the slow query execution, you might wanna create an index on your columns. If you don’t have previleges to do so, ask your DBA.

How to set the value of a column in Python?

I want to create a new column and set the values based on multiple values (text or value) of other columns. So in the example below, c1 consists of [a,a,b,b] and c2 of [a,b,a,b].

Which is the best python function for column wise?

I would use apply. It allows you to perform a function row-wise or column-wise. Check this post on StackOverflow, it provides good examples of what this looks like. Thanks for contributing an answer to Data Science Stack Exchange!

How to select a specific column in SQL?

SELECT CASE WHEN Type = 0 THEN Val0 WHEN Type = 1 Then Val1 . . WHEN Type = N Then ValN END FROM tbl SELECT a.val0 FROM TABLE a WHERE a.type = 0 UNION ALL SELECT a.val1 FROM TABLE a WHERE a.type = 1 UNION ALL

How to extract column value from another column?

df [*column*] [*row*] where column and row point to the value you want returned. For your example, column is ‘A’ and for row you use a mask: df [‘B’] == 3. To get the value from the series there are several options: df [‘A’] [df [‘B’] == 3].values [0] df [‘A’] [df [‘B’] == 3].iloc [0] df [‘A’] [df [‘B’] == 3].to_numpy () [0] Share.

How to select rows with same ID but different liefnr?

I would like to select the ARIDNR that occurs more than once with the different LIEFNR. The output should be something like: The idea is to use the inner query to identify the records which have a ARIDNR value that occurs 1+ times in the data, then get all columns from the same table based on that set of values.

How to create a column based on two columns?

Learning column comparison. How to create a new column based on two columns? I can do two conditions fruit or vegetable. But for the third condition, couldn’t do. : ( Thanks a lot for your help!

How to select range based on cell value in another column in Excel?

Take an example, if the cells display FALSE in column C, the relative cells in column A and column B will be selected as below screenshot shown. There is no built-in feature that can help you to solve this task, but in this article, I can handle it with a VBA code. 1.

How to use a calculated column to calculate another?

How would I word the query so that I can use calccolumn1 in another calculation within the same query? It might be an If then or a Case when, but bottomline it is some derived number. If you want to refer to calculated column on the “same query level” then you could use CROSS APPLY (Oracle 12c):

How does the Dax formula work for three columns?

As a Column, the formula gives a value of 6 no matter what is in the three columns it is looking at. As a Measure, the formula gives different values for the different conditions, which is great, but it brings in extra blank rows for values that aren’t present in the original data.

How are calculated columns similar to measures in Power BI?

This is precisely what calculated columns are for. Calculated columns are similar to measures in that both are based on DAX formulas, but they differ in how they are used. You often use measures in a visualization’s Values area, to calculate results based on other fields.

How to look up multiple values in a row?

The following array formula uses the corresponding values in column A, B, C and D to do a lookup in Sheet1 and return a value in column E. Jason C asks: I have a set of data, like the one you used in the original example that also […] The array formula in column G filters values in column C using a condition in cell E3, comparing it with […]

How to return a value based on a row?

The INDEX function returns a value based on a row and column number, there is only a row number in this case so you can omit the column argument. INDEX (cell_reference, [row_num], [column_num]) The first argument is the cell reference from which you want to get a specific value from.