How to create Count IF Query?

Question

I have data in a table that looks like this:

VISIT ID | Surgeon | Surgeon Arrival Before Schedule in Minutes | ...
123      | Dr. A   | -45
156      | Dr. A   | -25
198      | Dr. A   | 32
...      | ...

I want to construct a query that will bin and count, meaning I would like an output like the following:

Surgeon | Bin 1 | Bin 2 | Bin 3 | ... | Bin 6
Dr. A   | 2     | 0     | 4     | ... | 0

Above, the Bin(s) are defined where the Surgeon Arrival Before Schedule in Minutes column falls into a bin with the following logic:

Bin 1 = Surgeon Arrival Before Schedule in Minutes        <= -30
Bin 2 = -30 < Surgeon Arrival Before Schedule in Minutes  <= -15
Bin 3 = -15 < Surgeon Arrival Before Schedule in Minutes  <= 0
Bin 4 = 0   < Surgeon Arrival Before Schedule in Minutes  <= 15
Bin 5 = 15  < Surgeon Arrival Before Schedule in Minutes  <= 30
Bin 6 = Surgeon Arrival Before Schedule in Minutes        > 30

I want to COUNT how many Encounter ID numbers fall into each bin to produce the desired result.

I have been trying queries such as:

TRANSFORM Count([or on time log].[ENCOUNTER ID]) AS CountOfID

SELECT [or on time log].[Surgeon]

FROM [or on time log]

GROUP BY [or on time log].[Surgeon]

PIVOT IIf([Surgeon Arrival Before Schedule in Minutes] <= -30, "Bin 1",
    IIf(-30 < [Surgeon Arrival Before Schedule in Minutes] <= -15, "Bin 2",
        IIf(-15 < [Surgeon Arrival Before Schedule in Minutes] <=0, "Bin 3",
            IIf(0 < [Surgeon Arrival Before Schedule in Minutes] <=15, "Bin 4",
                IIf(15 < [Surgeon Arrival Before Schedule in Minutes] <= 30, "Bin 5",
                    IIf(30 < [Surgeon Arrival Before Schedule in Minutes], "Bin 6")
                )
            )
        )
    )
)
;

Doing so gives me only bins 1 and 3 Surgeon which is not accurate.

Answer 1

As a first step, assign the bin number for each arrival.

This is the sample table I used.

VISIT_ID Surgeon Arrival
     123 Dr. A       -45
     156 Dr. A       -25
     198 Dr. A        32

The query below uses a Switch expression to assign the bin number, giving me this result set.

VISIT_ID Surgeon Arrival bin_number
     123 Dr. A       -45          1
     156 Dr. A       -25          2
     198 Dr. A        32          6

SELECT
    o.VISIT_ID,
    o.Surgeon,
    o.Arrival,
    Switch
        (
            o.Arrival <= -30, 1,
            o.Arrival <= -15, 2,
            o.Arrival <=   0, 3,
            o.Arrival <=  15, 4,
            o.Arrival <=  30, 5,
            o.Arrival >   30, 6,
        ) AS bin_number
FROM OR_on_time_log AS o;

You can build on that with a PIVOT to return the bin counts for each surgeon.