optimize sql join

[andyqian]

Ⅰ. Describe what this PR did

optimize sql join

[codecov-io]

Codecov Report

Merging #1356 into develop will increase coverage by 11.2%.
The diff coverage is 0%.

@@             Coverage Diff              @@
##             develop   #1356      +/-   ##
============================================
+ Coverage       34.2%   45.4%   +11.2%     
+ Complexity      2166    1662     -504     
============================================
  Files            427     345      -82     
  Lines          23175   12692   -10483     
  Branches        3248    1608    -1640     
============================================
- Hits            7926    5763    -2163     
+ Misses         14161    6281    -7880     
+ Partials        1088     648     -440

Impacted Files	Coverage Δ	Complexity Δ
...va/io/seata/rm/datasource/exec/UpdateExecutor.java	0% <0%> (ø)	0 <0> (ø)	⬇️
...ta/rm/datasource/exec/SelectForUpdateExecutor.java	0% <0%> (ø)	0 <0> (ø)	⬇️
...va/io/seata/rm/datasource/exec/InsertExecutor.java	67.85% <0%> (+1.57%)	20 <0> (ø)	⬇️
...va/io/seata/rm/datasource/exec/DeleteExecutor.java	0% <0%> (ø)	0 <0> (ø)	⬇️
...dec/protobuf/generated/RegisterRMRequestProto.java
.../protobuf/generated/BranchCommitResponseProto.java
.../io/seata/codec/protobuf/generated/ResultCode.java
...eata/codec/protobuf/generated/ResultCodeProto.java
...dec/protobuf/generated/GlobalRollbackResponse.java
...tobuf/generated/AbstractBranchEndRequestProto.java
... and 76 more

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[slievrly]

LGTM