Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

document behaviour when id _eq: undefined or null

See original GitHub issue

Everything worked well, but then on the client-side happened issue when selected for deletion item id has become undefined and as result, all items in the table was deleted:

{
  variables: { where: { id: { _eq: undefined } } },
}

Issue Analytics

State:
Created 4 years ago
Reactions:3
Comments:8 (3 by maintainers)

Top GitHub Comments

3reactions

m0ngr31commented, Aug 6, 2019

Happened to me twice recently. Wasn’t a good situation. Would be good to have this explicitly documented.

2reactions

pnappacommented, Dec 4, 2019

The reason why this happens is because:
where: { id: { _eq: null } }
reduces to
where: { id: {} }

I think this could be fixed by preventing nullable types from being compared with some operators (e.g. {_eq: X } requires X to be some type Y!). The reduction from { _eq: null } to {} is unintuitive to those unfamiliar with ternary-valued logic in SQL, especially when the column being compared is non-nullable. My 2 cents is that exposing this as a type error is a far more elegant solution to now.

Top Results From Across the Web

How to Determine If Variable is Undefined or NULL in JavaScript

Answer: Use the equality operator ( == ). In JavaScript if a variable has been declared, but has not been assigned a value,...

How to check for an undefined or null variable in JavaScript?

I think the most efficient way to test for "value is null or undefined " is if ( some_variable == null ){ //...

$eq — MongoDB Manual

Specifies equality condition. The $eq operator matches documents where the value of a field equals the specified value. ... Specifying the $eq operator...

Need PowerShell script to check the variable, if the variable is ...

Need PowerShell script to check the variable, if the variable is undefined or Null or Empty. But I am getting the error.

Node.js v19.3.0 Documentation

Bugs or behavior changes may surprise users when Experimental API ... If the message parameter is undefined, a default error message is assigned....