Visual Designer
Preview & Results
Use Preview to inspect data at a chosen point in a workflow. The results panel brings the rows, column information, generated SQL, and run details together so you can check the result before using it elsewhere.
Inspect a workflow
Connect Preview to the tool whose output you want to inspect. Select a configured tool while building to see a preview, or choose Run to produce the complete workflow result.
Check the result label above the table: Preview · up to 100 rows identifies a sample used while building; Complete result identifies a completed run. Keep this distinction in mind when reviewing row counts or downloading data.
Read the results panel
| Tab | What to check |
|---|---|
| Table | Rows and columns, with search, sorting, column visibility, and display density controls |
| Schema | Database and inferred logical types, nullability, confidence, and sample values |
| Profile | Fill rate, distinct values, numeric summaries, and value distributions |
| SQL | The generated query for the selected result |
| Run Details | Run status, timing, output results, and execution details |
| Messages | Configuration and validation messages to resolve while building |
Schema inference and Profile summarize the rows currently loaded in the panel. Use them to spot issues in the displayed data; check the complete result when validating the overall output.
Download the result
Use the results menu to download CSV or Excel. Download preview rows exports the loaded preview. After a complete run, Download all rows exports the complete result.
If a result has expired, run the workflow again to prepare a fresh download. To keep a result in the workspace for reuse, add an Output and save it to DataQloo Storage.
Check a run
Open Run Details after running to see whether execution succeeded and inspect any error. For a saved workflow, the history strip lets you select earlier runs. See Run history for details.