syheliel commented on issue #3137:
URL:
https://github.com/apache/arrow-datafusion/issues/3137#issuecomment-1214524410
In `src/execution/context.rs:1444-1448`, the program doesn't check the
length of `variable_names[0]`(in my cause the value is "@") and lead to
fetching invalid address for `variable_names[0][0..2]`.
```
let provider_type = if &variable_names[0][0..2] == "@@" {
VarType::System
} else {
VarType::UserDefined
};
```
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