minor: doc fixes for timestamp output format (#18315)

Followup some doc fixes missed in #17888

Author: Jefffrey

datafusion/functions/src/datetime/to_local_time.rs

@@ -69,11 +69,11 @@ use datafusion_macros::user_doc;
 FROM (
   SELECT '2024-04-01T00:00:20Z'::timestamp AT TIME ZONE 'Europe/Brussels' AS time
 );
-+---------------------------+------------------------------------------------+---------------------+-----------------------------+
-| time                      | type                                           | to_local_time       | to_local_time_type          |
-+---------------------------+------------------------------------------------+---------------------+-----------------------------+
-| 2024-04-01T00:00:20+02:00 | Timestamp(Nanosecond, Some("Europe/Brussels")) | 2024-04-01T00:00:20 | Timestamp(Nanosecond, None) |
-+---------------------------+------------------------------------------------+---------------------+-----------------------------+
++---------------------------+----------------------------------+---------------------+--------------------+
+| time                      | type                             | to_local_time       | to_local_time_type |
++---------------------------+----------------------------------+---------------------+--------------------+
+| 2024-04-01T00:00:20+02:00 | Timestamp(ns, "Europe/Brussels") | 2024-04-01T00:00:20 | Timestamp(ns)      |
++---------------------------+----------------------------------+---------------------+--------------------+
 
 # combine `to_local_time()` with `date_bin()` to bin on boundaries in the timezone rather
 # than UTC boundaries

datafusion/functions/src/datetime/to_timestamp.rs

@@ -38,7 +38,7 @@ use datafusion_macros::user_doc;
     description = r#"
 Converts a value to a timestamp (`YYYY-MM-DDT00:00:00Z`). Supports strings, integer, unsigned integer, and double types as input. Strings are parsed as RFC3339 (e.g. '2023-07-20T05:44:00') if no [Chrono formats] are provided. Integers, unsigned integers, and doubles are interpreted as seconds since the unix epoch (`1970-01-01T00:00:00Z`). Returns the corresponding timestamp.
 
-Note: `to_timestamp` returns `Timestamp(Nanosecond)`. The supported range for integer input is between `-9223372037` and `9223372036`. Supported range for string input is between `1677-09-21T00:12:44.0` and `2262-04-11T23:47:16.0`. Please use `to_timestamp_seconds` for the input outside of supported bounds.
+Note: `to_timestamp` returns `Timestamp(ns)`. The supported range for integer input is between `-9223372037` and `9223372036`. Supported range for string input is between `1677-09-21T00:12:44.0` and `2262-04-11T23:47:16.0`. Please use `to_timestamp_seconds` for the input outside of supported bounds.
 "#,
     syntax_example = "to_timestamp(expression[, ..., format_n])",
     sql_example = r#"```sql

docs/source/user-guide/sql/scalar_functions.md

@@ -2749,11 +2749,11 @@ to_local_time(expression)
 FROM (
   SELECT '2024-04-01T00:00:20Z'::timestamp AT TIME ZONE 'Europe/Brussels' AS time
 );
-+---------------------------+------------------------------------------------+---------------------+-----------------------------+
-| time                      | type                                           | to_local_time       | to_local_time_type          |
-+---------------------------+------------------------------------------------+---------------------+-----------------------------+
-| 2024-04-01T00:00:20+02:00 | Timestamp(Nanosecond, Some("Europe/Brussels")) | 2024-04-01T00:00:20 | Timestamp(Nanosecond, None) |
-+---------------------------+------------------------------------------------+---------------------+-----------------------------+
++---------------------------+----------------------------------+---------------------+--------------------+
+| time                      | type                             | to_local_time       | to_local_time_type |
++---------------------------+----------------------------------+---------------------+--------------------+
+| 2024-04-01T00:00:20+02:00 | Timestamp(ns, "Europe/Brussels") | 2024-04-01T00:00:20 | Timestamp(ns)      |
++---------------------------+----------------------------------+---------------------+--------------------+
 
 # combine `to_local_time()` with `date_bin()` to bin on boundaries in the timezone rather
 # than UTC boundaries
@@ -2777,7 +2777,7 @@ FROM (
 
 Converts a value to a timestamp (`YYYY-MM-DDT00:00:00Z`). Supports strings, integer, unsigned integer, and double types as input. Strings are parsed as RFC3339 (e.g. '2023-07-20T05:44:00') if no [Chrono formats] are provided. Integers, unsigned integers, and doubles are interpreted as seconds since the unix epoch (`1970-01-01T00:00:00Z`). Returns the corresponding timestamp.
 
-Note: `to_timestamp` returns `Timestamp(Nanosecond)`. The supported range for integer input is between `-9223372037` and `9223372036`. Supported range for string input is between `1677-09-21T00:12:44.0` and `2262-04-11T23:47:16.0`. Please use `to_timestamp_seconds` for the input outside of supported bounds.
+Note: `to_timestamp` returns `Timestamp(ns)`. The supported range for integer input is between `-9223372037` and `9223372036`. Supported range for string input is between `1677-09-21T00:12:44.0` and `2262-04-11T23:47:16.0`. Please use `to_timestamp_seconds` for the input outside of supported bounds.
 
 ```sql
 to_timestamp(expression[, ..., format_n])