Mingyu Chen 491d269412 [fix](tvf) fix bug that failed to get schema of tvf when file is empty (#16928) ...

In previous implementation, when querying tvf, FE will get schema from BE.
And BE will try to open the first file to get its schema info, but for orc or parquet format,
if the file is empty, it will return error.
But even for an empty file, we can still get schema info from file's footer.
So we should handle the empty file to get schema info correctly.

Also modify the catalog doc to add some FAQ.

2023-02-21 14:14:32 +08:00

..

community

[fix](doc) fix mal-format doc #16898

2023-02-18 14:30:54 +08:00

docs

[fix](tvf) fix bug that failed to get schema of tvf when file is empty (#16928)

2023-02-21 14:14:32 +08:00