Encrypting network traffic
It is a best practice to encrypt network traffic between the Looker application and your database. Consider one of the options described on the Enabling secure database access documentation page.
Feature support
For Looker to support some features, your database dialect must also support them.
IBM DB2 supports the following features as of Looker 23.14:
| Feature | Supported? |
|---|---|
| Support Level | Supported |
| Looker (Google Cloud core) | No |
| Symmetric Aggregates | No |
| Derived Tables | Yes |
| Persistent SQL Derived Tables | Yes |
| Persistent Native Derived Tables | Yes |
| Stable Views | Yes |
| Query Killing | Yes |
| SQL-based Pivots | No |
| Timezones | No |
| SSL | Yes |
| Subtotals | No |
| JDBC Additional Params | Yes |
| Case Sensitive | Yes |
| Location Type | Yes |
| List Type | No |
| Percentile | No |
| Distinct Percentile | No |
| SQL Runner Show Processes | Yes |
| SQL Runner Describe Table | Yes |
| SQL Runner Show Indexes | Yes |
| SQL Runner Select 10 | Yes |
| SQL Runner Count | Yes |
| SQL Explain | No |
| Oauth Credentials | No |
| Context Comments | Yes |
| Connection Pooling | No |
| HLL Sketches | No |
| Aggregate Awareness | Yes |
| Incremental PDTs | No |
| Milliseconds | Yes |
| Microseconds | Yes |
| Materialized Views | No |
| Approximate Count Distinct | No |