fix #2252

[tonyhu214]

fix #2252 使用conn.current_schema=db_name 替换ALTER SESSION SET CURRENT_SCHEMA = :db_name 。
fix #2262 由于sql检测中可能存在影响行数位none的情况，针对性修复

[codecov]

Codecov Report

Patch coverage: 40.00% and project coverage change: -0.02% ⚠️

Comparison is base (9d01416) 75.51% compared to head (181276e) 75.50%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2266      +/-   ##
==========================================
- Coverage   75.51%   75.50%   -0.02%     
==========================================
  Files         107      107              
  Lines       15460    15460              
==========================================
- Hits        11675    11673       -2     
- Misses       3785     3787       +2     

Files Changed	Coverage Δ
sql/utils/sql_utils.py	90.85% <ø> (-0.06%)	⬇️
sql/engines/oracle.py	50.22% <40.00%> (-0.23%)	⬇️

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[LeoQuote]

lint 修一下谢谢，只需要 black . —exclude venv 就可以了

另外不需要这样反复close open，只需要往你的分支里推送新代码，pr会自动更新的

[tonyhu214]

@LeoQuote sry，昨天晚上加班，脑子有点迷糊

[LeoQuote]

这样改一下安全一些

[tonyhu214]

@LeoQuote 非常感谢你的建议，基于你的建议我觉得get方法应该加上缺失默认值，避免key缺失导致异常。例如get("rows“, None)

[LeoQuote]

好的，不过get方法如果不指定第二个参数，返回的值就会是None