fix(duckdb-driver): allow setting default schema (#7181)

Author: MikeNitsenko

packages/cubejs-backend-shared/src/env.ts

@@ -1429,6 +1429,16 @@ const variables: Record<string, (...args: any) => any> = {
     ]
   ),
 
+  duckdbSchema: ({
+    dataSource
+  }: {
+    dataSource: string,
+  }) => (
+    process.env[
+      keyByDataSource('CUBEJS_DB_DUCKDB_SCHEMA', dataSource)
+    ]
+  ),
+
   /**
    * Presto catalog.
    */

packages/cubejs-duckdb-driver/src/DuckDBDriver.ts

@@ -85,6 +85,10 @@ export class DuckDBDriver extends BaseDriver implements DriverInterface {
         key: 'memory_limit',
         value: getEnv('duckdbMemoryLimit', this.config),
       },
+      {
+        key: 'schema',
+        value: getEnv('duckdbSchema', this.config),
+      },
     ];
 
     for (const { key, value } of configuration) {