waitingkuo commented on code in PR #3455:
URL: https://github.com/apache/arrow-datafusion/pull/3455#discussion_r970106276
##########
datafusion/core/src/catalog/information_schema.rs:
##########
@@ -39,26 +41,32 @@ use super::{
schema::SchemaProvider,
};
+use crate::config::ConfigOptions;
+
const INFORMATION_SCHEMA: &str = "information_schema";
const TABLES: &str = "tables";
const VIEWS: &str = "views";
const COLUMNS: &str = "columns";
+const SETTINGS: &str = "settings";
Review Comment:
@alamb updated
```bash
❯ show tables;
+---------------+--------------------+-------------+------------+
| table_catalog | table_schema | table_name | table_type |
+---------------+--------------------+-------------+------------+
| datafusion | information_schema | tables | VIEW |
| datafusion | information_schema | views | VIEW |
| datafusion | information_schema | columns | VIEW |
| datafusion | information_schema | df_settings | VIEW |
+---------------+--------------------+-------------+------------+
4 rows in set. Query took 0.003 seconds.
❯ select * from information_schema.df_settings;
+-------------------------------------------------+---------+
| name | setting |
+-------------------------------------------------+---------+
| datafusion.execution.coalesce_batches | true |
| datafusion.execution.time_zone | UTC |
| datafusion.explain.physical_plan_only | false |
| datafusion.execution.coalesce_target_batch_size | 4096 |
| datafusion.execution.batch_size | 8192 |
| datafusion.optimizer.skip_failed_rules | true |
| datafusion.optimizer.filter_null_join_keys | false |
| datafusion.explain.logical_plan_only | false |
+-------------------------------------------------+---------+
8 rows in set. Query took 0.002 seconds.
```
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