hms | Hospital Management System | REST library

tl;dr somewhere deep in the guts of the cli package (called to generate the pretty-printed output about column types), the code is generating a random string to use as a label.

A major clue is that

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Please kindly refer to: https://stackoverflow.com/a/63877454/13329100

For more details, see: Error Codes Supported Devices

You could use tidyr instead:

I'm not sure what "when I break the lines" means here. It doesn't appear that there is a SQL injection attack here. It looks like the JSON passed in the request has an enrollStatus of "2000 and select sleep(10)))); --" rather than, presumably, "2000". The query that is reported in the error message is using bind variables so this is just Oracle saying "hey, I'm comparing this thing you're passing in against a numeric value but I can't seem to convert it to a number". The actual value you're passing in doesn't appear in the query so it's not a SQL injection attack.

Now, from a security standpoint, the error message is leaking a whole lot of information about the underlying schema which I'd be uncomfortable handing an attacker. It is possible that knowing that information would help an attacker to craft a SQL injection attack somewhere else in the system or to access data they're not authorized to access.

NULL is a 0-length object with class "NULL" , so it can't be used as an output to your if_else() call, (or base R's ifelse for that matter).

You need to match the hms class for both the TRUE and FALSE conditions if using if_else, like:

You can use pmax:

You can use

Combine date and time to create datetime column. split the datetime variable for each ID and find the common ones using Reduce and use it to subset the dataframes to keep only the common date and times between all the ID's.

According to Spring Data Documentation:

1.2.3 Creating repository instances

In this section you create instances and bean definitions for the repository interfaces defined. One way to do so is using the Spring namespace that is shipped with each Spring Data module that supports the repository mechanism although we generally recommend to use the Java-Config style configuration. XML configuration

Each Spring Data module includes a repositories element that allows you to simply define a base package that Spring scans for you.