feat: select into null exception

[KaidoWang]

• What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)
  If select closure in select into result is empty, we just skip saving, and the job is succeed. But users can't find the output file. It's not intuitive.
  We should throw an exception.

close #1459

• What is the current behavior? (You can also link to an open issue here)
  throw new Exception("select empty, skip save")

• What is the new behavior (if this is a feature change)?

[github-actions]

SDK Test Report

  72 files    72 suites   4m 56s ⏱️
172 tests 169 ✔️ 3 💤 0 ❌
212 runs  209 ✔️ 3 💤 0 ❌

Results for commit cb8065f.

♻️ This comment has been updated with latest results.

[github-actions]

Linux Test Report

       56 files       183 suites   42m 3s ⏱️
  8 210 tests   8 210 ✔️ 0 💤 0 ❌
12 126 runs  12 126 ✔️ 0 💤 0 ❌

Results for commit cb8065f.

♻️ This comment has been updated with latest results.

[codecov]

Codecov Report

Merging #1621 (10417ac) into main (fad76a8) will decrease coverage by 0.00%.
The diff coverage is 0.00%.

❗ Current head 10417ac differs from pull request most recent head cb8065f. Consider uploading reports for the commit cb8065f to get more accurate results

@@             Coverage Diff              @@
##               main    #1621      +/-   ##
============================================
- Coverage     67.47%   67.46%   -0.01%     
  Complexity      323      323              
============================================
  Files           600      600              
  Lines        114806   114806              
  Branches        999      999              
============================================
- Hits          77462    77454       -8     
- Misses        37137    37145       +8     
  Partials        207      207              

Impacted Files	Coverage Δ
...paradigm/openmldb/batch/nodes/SelectIntoPlan.scala	60.00% <0.00%> (ø)
...s/query_response_time/deploy_query_response_time.h	81.25% <0.00%> (-18.75%)	⬇️
...atistics/query_response_time/query_response_time.h	78.26% <0.00%> (-4.35%)	⬇️
.../query_response_time/deploy_query_response_time.cc	97.10% <0.00%> (-2.90%)	⬇️
src/rpc/rpc_client.h	89.18% <0.00%> (-1.36%)	⬇️
src/sdk/db_sdk.cc	63.06% <0.00%> (-1.21%)	⬇️
src/nameserver/name_server_impl.cc	38.87% <0.00%> (-0.09%)	⬇️
src/tablet/tablet_impl.cc	43.48% <0.00%> (+0.05%)	⬆️
hybridse/src/vm/transform.cc	84.58% <0.00%> (+0.15%)	⬆️
hybridse/src/node/plan_node.cc	84.94% <0.00%> (+0.17%)	⬆️
... and 3 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 2db9c24...cb8065f. Read the comment docs.

[tobegit3hub]

LGTM