[enhancement](jdbc catalog) Add lowercase column name mapping to Jdbc data source & optimize database and table mapping#27283

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zy-kkk wants to merge 2 commits intoapache:branch-2.0from zy-kkk:jdbc_lower_2

+200-96

Commits on Nov 20, 2023

[enhancement](jdbc catalog) Add lowercase column name mapping to Jdbc data source & optimize database and table mapping (apache#27124 )
zy-kkk
committed
[hotfix](jdbc catalog) fix realColumnNames serialize npe
zy-kkk
committed