What if I want the left side to be an expression?

[fengwuxp]

Can the field on the left support an expression, such as: a + b - c?
If custom extension support is possible, how do I do it? Thank you

[ukrbublik]

There is an example of it in demo app:
https://ukrbublik.github.io/react-awesome-query-builder
Choose "Select source" - "Function", then "Linear regression".

react-awesome-query-builder/packages/examples/src/demo/config/index.tsx

Line 750 in 617ee98

LINEAR_REGRESSION: BasicFuncs.LINEAR_REGRESSION,

react-awesome-query-builder/packages/examples/src/demo/config/index.tsx

Line 271 in 617ee98

fieldSources: ["field", "func"],

You can create own function similar to LINEAR_REGRESSION:

react-awesome-query-builder/packages/core/modules/config/funcs.js

Line 165 in 617ee98

const LINEAR_REGRESSION = {

[fengwuxp]

Thanks for your answer, I'll try it