joyCurry30 commented on PR #3996:
URL: https://github.com/apache/flink-cdc/pull/3996#issuecomment-2816474768

   As documented in the official MySQL 8.4 reference manual: 
https://dev.mysql.com/doc/refman/8.4/en/identifier-case-sensitivity.html
   The case sensitivity behavior of MySQL identifiers is governed by the system 
variable "lower_case_table_names", which defines three distinct operational 
modes:
   | mode | Behavior |  Scope |
   | ----------- | ----------- | ----------- |
   | 0 | Case-sensitive comparisons with case-preserving storage | Affects 
database names and table names |
   | 1 | Case-insensitive comparisons with lowercase conversion | Applies to 
database names and table names |
   | 2 | Case-insensitive comparisons with case-preserving storage| Impacts 
database names and table names |
   
    Should we introduce a validation mechanism to ensure configuration parity 
between the connector and MySQL server (e.g., rejecting mixed-case identifiers 
when lower_case_table_names=1)?
   


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