DBMetadata-core/src/main/java/com/github/abel533/database/introspector/DatabaseIntrospector.java
protected Map<String, Map<String, String>> getColumnComments(DatabaseConfig config) throws SQLException {
        return null;
    }
protected Map<String, Map<String, String>> getColumnComments(DatabaseConfig config) throws SQLException {
        return null;
    }
获取表名和列名-注释映射

@param config
@return
@throws SQLException