To answer my own question, yes, the 'exists' method is usable with JSON.
Here is the last line above, returning 0:
```
db exists {SELECT json_extract('{"a":15,"b":26}','$.c') AS c WHERE c IS NOT NULL}
```
To answer my own question, yes, the 'exists' method is usable with JSON.
Here is the last line above, returning 0:
```
db exists {SELECT json_extract('{"a":15,"b":26}','$.c') AS c WHERE c IS NOT NULL}
```