flink-connector-jdbc/src/main/java/org/apache/flink/connector/jdbc/databases/oracle/dialect/OracleDialect.java [69:76]:
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    @Override
    public String quoteIdentifier(String identifier) {
        return identifier;
    }

    @Override
    public Optional<String> getUpsertStatement(
            String tableName, String[] fieldNames, String[] uniqueKeyFields) {
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flink-connector-jdbc/src/main/java/org/apache/flink/connector/jdbc/databases/sqlserver/dialect/SqlServerDialect.java [65:72]:
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    @Override
    public String quoteIdentifier(String identifier) {
        return identifier;
    }

    @Override
    public Optional<String> getUpsertStatement(
            String tableName, String[] fieldNames, String[] uniqueKeyFields) {
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