gandronchik commented on code in PR #2177:
URL: https://github.com/apache/arrow-datafusion/pull/2177#discussion_r861674286
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datafusion/expr/src/function.rs:
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@@ -39,6 +40,10 @@ use std::sync::Arc;
pub type ScalarFunctionImplementation =
Arc<dyn Fn(&[ColumnarValue]) -> Result<ColumnarValue> + Send + Sync>;
+/// Table function. Second tuple
+pub type TableFunctionImplementation =
+ Arc<dyn Fn(&[ColumnarValue], usize) -> Result<(ArrayRef, Vec<usize>)> +
Send + Sync>;
Review Comment:
I updated the header of PR. Hope it is clear enough now:)
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