What is the best way to query records within a specified range in a SQL database using the BETWEEN

How do I retrieve records from the database using SQL's BETWEEN clause? My goal is to select records that fall within a specified startDate and endDate. If the record exists within this range, it should return true; otherwise, it should return false.

//form

formData = {
    "startDate": "14/04/2022 09:41 PM",
    "duration": 3600000,
    "assignedTo": "441017201|441017210",
}

// current code

var checkExistingEvent = (assignedTo, startDate, end) => {
    var assignees = assignedTo.split("|")
    var userFilters = assignees.map((user) => {
        return `Assigned_To_Ids LIKE '%${user}%'`;
    }).join(" OR ");
    return new Promise((resolve, reject) => {
        ....., ("SELECT Assigned_To_Ids, startDate FROM Event WHERE (" + userFilters + ") AND (startDate BETWEEN '" + moment(startDate).format() + "' AND '"+ moment(end).format() + "')", 100, function(data){
            return resolve(data.length == 0)
        })
    })
}

var validateUserExistsEvent = async(formData) => {
    var {assignedTo, startDate, duration } = formData
    var dd_startDate = moment(startDate, 'DD/MM/YYYY HH:m A').toDate()
    var end = new Date(dd_startDate);
        end = new Date(end.setTime(end.getTime() + duration));
    var hasExisting = await _data.hasExistingEvent(assignedTo, dd_startDate, end);
    return hasExisting;
}

Database Record:

https://i.sstatic.net/zpvGp.png

Answer №1

To retrieve specific column data from a table within a specified date range, use the following SQL query: SELECT column_name(s) FROM table_name WHERE column_name BETWEEN startDate AND endDate;

Essentially, this query allows you to select the desired column names from the table where the date values fall between the specified start and end dates.

Answer №2

If you find yourself facing this task, consider crafting a stored procedure or utilizing an SQL statement similar to the following example

select case when exists (select * from Table2 where date between @start_date and @End_Date) then 1 else 0 end

Answer №3

An illustration is when you want to retrieve data between March 1 and March 30, 2022 utilizing the 'Between' keyword.

For instance: SELECT * FROM table_name WHERE column_name BETWEEN startDate BETWEEN '2022-03-01 00:00:00' AND '2022-03-31 23:59:59';

If your table contains data that meets this criteria, there will be entries in an array; otherwise, it will remain empty.

Consequently, you can assign your variable a value of true or false based on this information.

Answer №4

Approach 1: If you need to determine a true or false result based on an SQL condition, you can utilize the SELECT CASE statement in SQL

SELECT
  CASE WHEN EXISTS 
  (
        SELECT Assigned_To_Ids 
        FROM events 
        WHERE startDate BETWEEN someStartDate and someEndDate 
  )
  THEN 'TRUE'
  ELSE 'FALSE'

END

In this case, someStartDate and someEndDate are variables that can be replaced as needed.

Approach 2:

You can craft an SQL query to return either 0 or a positive value based on the existence of records, and then with a simple check within a function, you can convert this value to true or false. The SQL query for this scenario would be:

SELECT count(Assigned_To_Ids) 
FROM events 
WHERE startDate BETWEEN someStartDate and someEndDate

Answer №5

Check if there are any events with a start date between the specified @startDate and @enddate.

Answer №6

Uncertain about the situation, but it appears you are in search of the following:

`SELECT Assigned_To_Ids, startDate 
FROM Event
WHERE ${userFilters} 
AND (
  startDate < ${moment(startDate).format()}
  AND startDate > ${moment(end).format()}
)`

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