Weijun-H commented on code in PR #18017:
URL: https://github.com/apache/datafusion/pull/18017#discussion_r2427108577
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datafusion/core/src/execution/context/mod.rs:
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@@ -1073,6 +1075,18 @@ impl SessionContext {
let mut state = self.state.write();
state.config_mut().options_mut().set(&variable, &value)?;
drop(state);
+
+ // Register UDFs that return values based on session configuration
+ // e.g. now() which depends on the time_zone configuration option
+ if variable == "datafusion.execution.time_zone" {
+ let config_options =
self.state.read().config().options().clone();
+ let now_udf = {
+ // recreate the function so it captures the new time zone
+ make_udf_function_with_config!(NowFunc, now,
&ConfigOptions);
+ now(&config_options)
+ };
+ self.state.write().register_udf(now_udf)?;
+ }
Review Comment:
We could refactor this logic after these issue resolved:
- https://github.com/apache/datafusion/issues/17995
- https://github.com/apache/datafusion/issues/17998
- https://github.com/apache/datafusion/issues/17995
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