optimize mysql undo executor

[xuzhiyiYoh]

Optimize undo sql builder and easier to read.

[codecov-io]

Codecov Report

Merging #1017 into develop will decrease coverage by 0.04%.
The diff coverage is 100%.

@@              Coverage Diff              @@
##             develop    #1017      +/-   ##
=============================================
- Coverage      39.05%   39.01%   -0.05%     
- Complexity      1111     1112       +1     
=============================================
  Files            221      221              
  Lines           8836     8817      -19     
  Branches        1132     1125       -7     
=============================================
- Hits            3451     3440      -11     
+ Misses          4948     4940       -8     
  Partials         437      437

Impacted Files	Coverage Δ	Complexity Δ
...source/undo/mysql/keyword/MySQLKeywordChecker.java	96.96% <ø> (ø)	6 <0> (ø)	⬇️
...in/java/io/seata/rm/datasource/sql/struct/Row.java	90.9% <100%> (+40.9%)	10 <3> (+6)	⬆️
...datasource/undo/mysql/MySQLUndoDeleteExecutor.java	88.88% <100%> (+1.38%)	5 <2> (-1)	⬇️
...datasource/undo/mysql/MySQLUndoUpdateExecutor.java	87.5% <100%> (-3.41%)	4 <1> (-2)
...datasource/undo/mysql/MySQLUndoInsertExecutor.java	86.66% <100%> (-3.34%)	4 <0> (-2)

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[xingfudeshi]

thanks.i left some comments.

[xingfudeshi]

LGTM

[xuzhiyiYoh]

Thanks for your review, I have fixed it and enhanced the ut.
By the way, why there are two different field rows added into before image(see the ut method testDeleteKeywordCheck).
@xingfudeshi

[xingfudeshi]

Thanks for your review, I have fixed it and enhanced the ut.
By the way, why there are two different field rows added into before image(see the ut method testDeleteKeywordCheck).
@xingfudeshi

The field name in the second row of data actually has no effect on this UT.it should be a mistake.

[slievrly]

LGTM

[funky-eyes]

由于前期Seata社区治理规范问题部分代码作者未签署CLA，可能引发社区知识产权风险问题。请所有在Seata社区贡献过代码（包含：主项目、官网、samples和多语言项目等）的 contributor 帮忙在这个链接登录github账号签署相应的开发者CLA，https://cla-assistant.io/seata/seata 。2023.1.31 未签署CLA的代码将会被rewrite，拜托大家帮忙签一下。