DLA支持云上大部分的数据源，相关支持的数据源不断优化，不支持的点可以提交工单，DLA团队将会快速响应；
RDS包括 MySQL、PG、SQLServer、Oracle关系型数据库，PolarDB跟RDS保持一致；
| Data Source\ Feature | SELECT | INSERT INTO | INSERT OVERWRITE | CREATE TABLE LIKE MAPPING | MSCK REPAIR DATABASE | MSCK REPAIR TABLE | ADD COLUMN |
|---|---|---|---|---|---|---|---|
| OSS | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| RDS | ✓ | ✓ | ✗ | ✓ | ✓ | ✗ | ✗ |
| OTS | ✓ | ✓ | ✗ | ✗ | ✓ | ✗ | ✓ |
| ODPS | ✓ | ✓ | ✗ | ✓ | ✓ | ✗ | ✗ |
| ADB-MySQL 2.0 | ✓ | ✓ | ✗ | ✗ | ✓ | ✗ | ✗ |
| ADB-MySQL 3.0 | ✓ | ✓ | ✓ | ✗ | ✓ | ✗ | ✗ |
| ADB-PG | ✓ | ✓ | ✓ | ✗ | ✓ | ✗ | ✗ |
| MongoDB | ✓ | ✓ | ✗ | ✗ | ✗ | ✗ | ✗ |
| Redis | ✓ | ✓ | ✗ | ✓ | ✓ | ✗ | ✗ |
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