alamb commented on code in PR #9019:
URL: https://github.com/apache/arrow-datafusion/pull/9019#discussion_r1476758593
##########
datafusion/physical-expr/src/datetime_expressions.rs:
##########
@@ -1337,6 +1376,36 @@ fn validate_to_timestamp_data_types(
None
}
+/// to_date SQL function implementation
+pub fn to_date_invoke(args: &[ColumnarValue]) -> Result<ColumnarValue> {
+ if args.is_empty() {
+ return exec_err!(
+ "to_date function requires 1 or more arguments, got {}",
+ args.len()
+ );
+ }
+
+ // validate that any args after the first one are Utf8
+ if args.len() > 1 {
+ if let Some(value) = validate_to_timestamp_data_types(args, "to_date")
{
+ return value;
+ }
+ }
+
+ match args[0].data_type() {
+ DataType::Int32
Review Comment:
It looks like your code takes several input types -- can you please add
tests that show calling `to_date` with these types (eg `select
to_date(arrow_cast(123, 'Int64'))`)
##########
datafusion/sqllogictest/test_files/dates.slt:
##########
@@ -107,3 +107,27 @@ query ?
SELECT '2023-01-01T00:00:00'::timestamp - DATE '2021-01-01';
----
730 days 0 hours 0 mins 0.000000000 secs
+
+# to_date_test
+statement ok
+create table to_date_t1(ts bigint) as VALUES
+ (1235865600000),
+ (1235865660000),
+ (1238544000000);
+
+
+# query_cast_timestamp_millis
+query D
+SELECT to_date(ts / 100000000) FROM to_date_t1 LIMIT 3
+----
+2003-11-02
+2003-11-02
+2003-11-29
+
+query D
+SELECT to_date('01-14-2023 01:01:30+05:30', '%q', '%d-%m-%Y %H/%M/%S', '%+',
'%m-%d-%Y %H:%M:%S%#z');
+----
+2023-01-13
+
+statement error DataFusion error: Internal error: to_date function unsupported
data type at index 1: List
+SELECT to_date('2022-08-03T14:38:50+05:30', make_array('%s', '%q', '%d-%m-%Y
%H:%M:%S%#z', '%+'));
Review Comment:
Can we also please add a test for invalid dates like
```
to_date('21311111')
```
I think the tests here could be copied and adapted to cover `to_date` quite
well:
https://github.com/apache/arrow-datafusion/blob/7641a3228156aab0e48c4bab5a6834b44f722d89/datafusion/sqllogictest/test_files/timestamps.slt#L2073-L2229
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