Extracting date range from SQL database

Data and Databases
1

Hey everyone! I’m trying to pull dates from my database but I’m stuck. Here’s what I want to do:

I’ve got a begin_date and an end_date in my table. I need to get all the dates that fall between these two. I tried writing a query but it’s not working right. Can someone take a look and tell me what I’m doing wrong?

Here’s my attempt:

SELECT DateColumn, BonusAmount
FROM PayrollData
WHERE WorkerID = 5
  AND DateColumn BETWEEN '2023-09-01' AND '2023-09-30'

The DateColumn is a datetime type. Any ideas on how to fix this? Thanks in advance!

2

hey swiftcoder15, seems ur query is nearly there. did u try wrapping the date colum with date() to drop time? for example, WHERE DATE(DateColumn) BETWEEN ‘2023-09-01’ AND ‘2023-09-30’. is workerid filter cutting out results? whats your experiance?

3

Your query structure is correct, but the issue likely stems from the datetime format. To ensure accuracy, consider using explicit date conversions and inclusive ranges. Here’s a refined version:

SELECT CONVERT(date, DateColumn) AS DateOnly, BonusAmount
FROM PayrollData
WHERE WorkerID = 5
AND DateColumn >= ‘2023-09-01’ AND DateColumn < ‘2023-10-01’

This approach converts DateColumn to a date, uses inclusive start and exclusive end dates, and maintains index usage if DateColumn is indexed. It should capture all relevant September dates without time discrepancies. Test this and verify your results match expectations.

4

yo swiftcoder! ur query looks good, but maybe the datetime is messing it up. try converting datecolumn to just date:

SELECT CAST(DateColumn AS DATE) AS DateOnly, BonusAmount
FROM PayrollData
WHERE WorkerID = 5
AND CAST(DateColumn AS DATE) BETWEEN ‘2023-09-01’ AND ‘2023-09-30’

that might do the trick. lmk if it works!