[GitHub] [arrow-datafusion] liukun4515 commented on a change in pull request #1974: Implement EXTRACT expression with week, month, day, hour

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liukun4515 commented on a change in pull request #1974:
URL: https://github.com/apache/arrow-datafusion/pull/1974#discussion_r824323294



##########
File path: datafusion/tests/sql/expr.rs
##########
@@ -714,17 +714,36 @@ async fn in_list_array() -> Result<()> {
 
 #[tokio::test]
 async fn test_extract_date_part() -> Result<()> {
-    test_expression!("date_part('hour', CAST('2020-01-01' AS DATE))", "0");
-    test_expression!("EXTRACT(HOUR FROM CAST('2020-01-01' AS DATE))", "0");
-    test_expression!(
-        "EXTRACT(HOUR FROM to_timestamp('2020-09-08T12:00:00+00:00'))",
-        "12"
-    );
     test_expression!("date_part('YEAR', CAST('2000-01-01' AS DATE))", "2000");
     test_expression!(
         "EXTRACT(year FROM to_timestamp('2020-09-08T12:00:00+00:00'))",
         "2020"
     );
+    test_expression!("date_part('MONTH', CAST('2000-01-01' AS DATE))", "1");
+    test_expression!(
+        "EXTRACT(month FROM to_timestamp('2020-09-08T12:00:00+00:00'))",
+        "9"
+    );
+    test_expression!("date_part('WEEK', CAST('2003-01-01' AS DATE))", "1");
+
+    //TODO Creating logical plan for 'SELECT EXTRACT(WEEK FROM to_timestamp('2020-09-08T12:00:00+00:00'))'

Review comment:
       @Ted-Jiang Maybe you can file a pr to fix this.




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