Examples
Examples
Try the starting example
- JSON Old schema [field,type string,nullable boolean]
- [["id","integer",false],["name","string",false]]
- JSON New schema [field,type string,nullable boolean]
- [["id","integer",false],["name","string",true],["age","integer",true]]
- Reader compatibility break candidates
- ["name: may introduce null"]
- Added fields
- ["age"]
- Break candidate count
- 1
Try another scenario
- JSON Old schema [field,type string,nullable boolean]
- [["id","integer",false],["name","string",false]]
- JSON New schema [field,type string,nullable boolean]
- [["id","integer",false],["name","string",false],["age","integer",true]]
- Reader compatibility break candidates
- []
- Added fields
- ["age"]
- Break candidate count
- 0
Calculation method
Calculation method
Reader compatibility break candidates
Old required fields removed, exact types changed, or old nonnullable field now nullable.
Added fields
New field keys absent from old schema.
Break candidate count
Number of reported old-reader break candidates.
Symbols and units
- a
- JSON Old schema [field,type string,nullable boolean]
- b
- JSON New schema [field,type string,nullable boolean]
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions & limits
Assumptions & limits
- Conservative flat-schema old-reader compatibility, exact type strings only; additions assumed tolerated by old reader. No language/database schema coercion rules. Supported limits: All numeric inputs must be finite. Only the explicitly described mathematical scenario is supported.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.