Dandandan commented on code in PR #2885:
URL: https://github.com/apache/arrow-datafusion/pull/2885#discussion_r919263679
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datafusion/optimizer/src/optimizer.rs:
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@@ -44,15 +44,23 @@ pub struct OptimizerConfig {
/// Query execution start time that can be used to rewrite expressions
such as `now()`
/// to use a literal value instead
pub query_execution_start_time: DateTime<Utc>,
+ next_id: usize,
}
impl OptimizerConfig {
/// Create optimizer config
pub fn new() -> Self {
Self {
query_execution_start_time: chrono::Utc::now(),
+ next_id: 1,
Review Comment:
This is used for creating a unique alias nr. right? Maybe we can add a
comment that it serves this purpose.
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