Example Data Table
| Example | Type | Logic | Sample Result |
|---|---|---|---|
| Gross Margin Rate | Ratio | Gross Profit / Revenue | 0.3400 |
| Revenue Variance | Variance | Actual Revenue - Budget Revenue | 12500.0000 |
| Growth Rate | Growth Percent | (Current - Prior) / Prior | 0.1840 |
| Share of Total | Share Total | Product Revenue / Total Revenue | 0.2750 |
| Weighted Score | Weighted Value | Score x Weight | 78.2000 |
Formula Used
This tool builds a calculated member from selected math logic. A ratio uses A / B. A variance uses A - B. Percent variance and growth use (A - B) / B. Share of total uses A / Total. Weighted value uses A x Weight. The generated MDX wraps these formulas inside a member definition.
The optional guard adds an IIF test. It returns NULL when a denominator is zero. This keeps the member safer inside cube queries and dashboard views.
How to Use This Calculator
- Enter the cube name and calculated member name.
- Choose the required calculation type.
- Add measure names exactly as they appear in your cube.
- Enter sample values to test the math result.
- Select format, solve order, and visibility options.
- Press Submit to view the result above the form.
- Use CSV or PDF buttons to download the output.
Article: MDX Calculated Member Planning for Tableau 10.4
Clear Math for Cube Analysis
A calculated member is useful when cube data needs extra business logic. It lets an analyst define a new measure without changing the source table. Tableau 10.4 can display these results when the connected cube supports the MDX expression. This calculator helps plan that expression before it is placed in a workbook or cube query.
Why Ratios Matter
Many reports depend on ratios. Gross margin rate, conversion rate, cost share, and error rate are common examples. A ratio is simple, but it can fail when the denominator is zero. For that reason, this tool can generate a safe IIF wrapper. The wrapper returns NULL instead of a broken division result.
Variance and Growth Checks
Variance compares two values. It can compare actual and budget values. It can also compare current and prior values. Percent variance adds scale. It shows the size of the difference relative to the base value. Growth percent uses the same structure. It is often used for monthly, quarterly, or yearly change.
Share and Weighted Logic
Share of total is helpful for category analysis. It divides one measure by a larger total measure. Weighted value is helpful when each item has a different importance. A score can be multiplied by a weight. This creates a controlled result for ranking and scoring models.
MDX Output Structure
The generated statement uses WITH MEMBER syntax. The member name is placed under the selected parent hierarchy. The expression is quoted after AS. Format string, solve order, and visibility options are added as member properties. The SELECT block then returns the calculated member on columns.
Practical Workflow
Start with a small example. Test the math using known values. Then review the generated MDX. Confirm each measure name matches the cube. Keep names consistent. Use solve order when formulas depend on other calculated members. Export the result for documentation. This makes review easier for analysts, developers, and report owners.
FAQs
What is an MDX calculated member?
It is a virtual cube member created with an MDX expression. It can calculate ratios, variances, growth rates, scores, and other derived measures.
Can this tool test a live cube?
No. It tests sample numeric logic and generates MDX text. You must validate the final expression inside your cube or reporting connection.
Why use a divide-by-zero guard?
A guard prevents broken ratio results. It returns NULL when the denominator is zero. This helps keep dashboards clean and safer.
What does solve order mean?
Solve order controls calculation priority. It is useful when several calculated members depend on each other inside the same cube query.
Which formula should I choose for growth?
Use growth percent when comparing current value against prior value. The formula is current minus prior, divided by prior.
Can I use custom MDX?
Yes. Select Custom MDX and enter your expression. The tool will generate the member block, but it will not evaluate custom numeric results.
What is share of total?
It measures one value against a larger total. It is useful for category contribution, sales mix, cost share, and portfolio analysis.
Why export CSV or PDF?
Exports help document formulas, test values, generated MDX, and review notes. They are useful for handoff and approval workflows.