[GitHub] [arrow-datafusion] r4ntix opened a new issue, #3901: datafusion-proto deserialize with Substring(str [from int] [for int]) fails

[GitBox <gi...@apache.org>]

r4ntix opened a new issue, #3901:
URL: https://github.com/apache/arrow-datafusion/issues/3901

   **Describe the bug**
   Serialize and Deserialize with `Substring(str [from int] [for int])`:
   ```rust
   // substr(string, position, count)
   let test_expr_with_count = Expr::ScalarFunction {
       fun: Substr,
       args: vec![col("col"), lit(1_i64), lit(1_i64)],
   };
   
   let ctx = SessionContext::new();
   roundtrip_expr_test(test_expr_with_count, ctx);
   ```
   
   Failed:
   ```
   assertion failed: `(left == right)`
     left: `"substr(col, Int64(1), Int64(1))"`,
     right: `"substr(col, Int64(1))"`
   ```
   
   This problem was found in arrow-ballista's benchmarks test: https://github.com/apache/arrow-ballista/issues/375
   
   **To Reproduce**
   👆
   
   **Expected behavior**
   A clear and concise description of what you expected to happen.
   
   **Additional context**
   Add any other context about the problem here.
   


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[GitHub] [arrow-datafusion] alamb closed issue #3901: datafusion-proto deserialize with Substring(str [from int] [for int]) fails

[GitBox <gi...@apache.org>]

alamb closed issue #3901: datafusion-proto deserialize with Substring(str [from int] [for int]) fails
URL: https://github.com/apache/arrow-datafusion/issues/3901


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