1. Fix the issue with tvf reading empty compressed files.
2. move two test cases (`test_local_tvf_compression` and `test_s3_tvf_compression`) from p2 to p0
`isAdjustedToUTC` is exactly the opposite in parquet reader(https://github.com/apache/parquet-format/blob/master/LogicalTypes.md), resulting the time with `isAdjustedToUTC=true` has increased by eight hours(UTC8).
The parquet with `isAdjustedToUTC=true` can be produced by spark-sql with the following configuration:
```
--conf spark.sql.session.timeZone=UTC
--conf spark.sql.parquet.outputTimestampType=TIMESTAMP_MICROS
```
However, using the following configuration, there's no logical and convert type in parquet meta data, so the time read by doris will also increase by eight hours(UTC8). Users need to set their own UTC time zone in doris(https://doris.apache.org/docs/dev/advanced/time-zone/)
```
--conf spark.sql.session.timeZone=UTC
--conf spark.sql.parquet.outputTimestampType=INT96
```
If specified, got a column of constant. otherwise an incremental series like it always be.
mysql> select * from numbers("number" = "5", "const_value" = "-123");
+--------+
| number |
+--------+
| -123 |
| -123 |
| -123 |
| -123 |
| -123 |
+--------+
5 rows in set (0.11 sec)
This pr makes three changes to the display of complex types：
1. NULL value in complex types refers to being displayed as `null`, not `NULL`
2. struct type is displayed as "column_name": column_value
3. Time types such as `datetime` and `date`, are displayed with double quotes in complex types. like
`{1, "2023-10-26 12:12:12"}`
This pr also do a code refactor:
1. nesting_level is set to a member variable of the `DataTypeSerDe`, rather than a parameter in methods.
What's more, this pr fix a bug that fileSize is not correct, introduced by this pr: #25854
### Before:
return errors when tvf queries an empty file or an error uri:
1. get parsed schema failed, empty csv file
2. Can not get first file, please check uri.
### Now:
we just return empty set when tvf queries an empty file or an error uri.
```sql
mysql> select * from s3(
"uri" = "https://error_uri/exp_1.csv",
"s3.access_key"= "xx",
"s3.secret_key" = "yy",
"format" = "csv") limit 10;
Empty set (1.29 sec)
```
sort out the test cases of external table.
After modify, there are 2 directories:
1. `external_table_p0`: all p0 cases of external tables: hive, es, jdbc and tvf
2. `external_table_p2`: all p2 cases of external tables: hive, es, mysql, pg, iceberg and tvf
So that we can run it with one line command like:
```
sh run-regression-test.sh --run -d external_table_p0,external_table_p2
```
