feat(prestodb-driver): Add schema filter to informationSchemaQuery (#6382) Thanks @maatumo !

Author: maatumo

packages/cubejs-prestodb-driver/src/PrestoDriver.ts

@@ -172,6 +172,13 @@ export class PrestoDriver extends BaseDriver implements DriverInterface {
     return super.downloadQueryResults(query, values, options);
   }
 
+  public informationSchemaQuery() {
+    if (this.config.schema) {
+      return `${super.informationSchemaQuery()} AND columns.table_schema = '${this.config.schema}'`;
+    }
+    return super.informationSchemaQuery();
+  }
+
   public normalizeResultOverColumns(data: any[], columns: TableStructure) {
     const columnNames = map(prop('name'), columns || []);
     const arrayToObject = zipObj(columnNames);

packages/cubejs-prestodb-driver/test/presto-driver.test.ts

@@ -74,4 +74,12 @@ describe('PrestoHouseDriver', () => {
       await driver.testConnection();
     });
   });
+
+  // eslint-disable-next-line func-names
+  it('should test informationSchemaQuery', async () => {
+    await doWithDriver(async (driver: any) => {
+      const informationSchemaQuery=driver.informationSchemaQuery();
+      expect(informationSchemaQuery).toContain("columns.table_schema = 'sf1'");
+    });
+  });
 });