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How can I connect to Spatial data stored in Google BigQuery using Tableau 2026.2? 

According to the Tableau knowledge base I should be able to work with GEOGRAPHY columns when connecting to Google BigQuery directly.  

However I seem to not see the spatial data when connecting.  

I created a test table, to ensure I do not bring in anything but what I want to test. However when dragging in this table the query I can see Tableau uses to fetch the data only select string, float and integers none of the GEOGRAPHY columns.  

When transforming to Custom SQL, and if I hard-code 1 column manually to ensure it is sent, I can see Tableau wraps this into a sub-query. Whilst the outer query is still only selecting non-Geography columns.   

What can I do to connect to spatial data, is there anything I am missing? 

The demo table is build using this query: 

  1 AS id,

  -- 1. BigQuery GEOGRAPHY: POINT

  ST_GEOGPOINT(5.16, 52.77) AS geography_point,

  -- 2. BigQuery GEOGRAPHY: LINESTRING

  ST_GEOGFROMTEXT(

    'LINESTRING(5.10 52.70, 5.20 52.75, 5.30 52.80)'

  ) AS geography_linestring,

  -- 3. BigQuery GEOGRAPHY: POLYGON

  ST_GEOGFROMTEXT(

    'POLYGON((5.0 52.0, 5.1 52.0, 5.1 52.1, 5.0 52.1, 5.0 52.0))'

  ) AS geography_polygon,

-- 4. WKT als STRING: POINT

  'POINT(5.16 52.77)' AS wkt_point,

  -- 5. WKT als STRING: LINESTRING

  'LINESTRING(5.10 52.70, 5.20 52.75, 5.30 52.80)' AS wkt_linestring,

  -- 6. WKT als STRING: POLYGON

  'POLYGON((5.0 52.0, 5.1 52.0, 5.1 52.1, 5.0 52.1, 5.0 52.0))' AS wkt_polygon,

  -- 7. Latitude als FLOAT64

  52.77 AS latitude,

  -- 8. Longitude als FLOAT64

  5.16 AS longitude,

  -- 9. NULL GEOGRAPHY

  CAST(NULL AS GEOGRAPHY) AS geography_null,

  -- 10. GEOGRAPHY via expliciete cast

  CAST(

    ST_GEOGFROMTEXT(

      'POLYGON((5.4 52.0, 5.5 52.0, 5.5 52.1, 5.4 52.1, 5.4 52.0))'

    )

    AS GEOGRAPHY

  ) AS geography_cast

Table in BigQuery  

When converting to Custom query this is the query in Tableau  

When adding geography_point Tableau sends the query as this, with the column in the sub-query but nothing in the outer query 

How to change the font of transaction type to match same as the number values .For example - Production Order Picking should be blue same as its value . Please have a look at the screenshots .It has to match the transaction type legend .Thankyou   

A follow up to my previous post:  Using multiple CTEs in Tableau | Salesforce Trailblazer Community

I now have to add 2 temporary variables, a start_date and end_date.  The code works w/ 1 temporary variable but fails when I add a second temporary variable.  The error message I receive says  

Actual statement count 3 did not match the desired statement count 1. 

Initial SQL Error. Check that the syntax is correct and that you have access privileges to the requested database. 

This is my code.  Would appreciate any help.  Thank you!

SET START_DATE = '2026-08-31'::DATE;

SET END_DATE = '2026-09-05'::DATE;

CREATE TEMPORARY TABLE AAAA_DB.AAAA_TB.test1 AS 

WITH RECURSIVE

business_dates (business_date) AS (

    SELECT $BUSINESS_START_DATE::DATE

    UNION ALL

    SELECT DATEADD(day, 1, business_date)

    FROM business_dates

    WHERE business_date < $BUSINESS_END_DATE::DATE

),

followed by multiple CTEs

#Tableau Desktop & Web Authoring

I have a Data-Driven Alert set to "Once - the first time it's true", watching a % Usage measure against an 80% threshold. The underlying calculation is tied to a rolling 12-month contract period (Aug 1–Jul 31) that resets automatically each year via TODAY()-based calculated fields — so % Usage climbs from 0% at the start of each contract year, and may or may not cross 80% before the year ends. 

Example scenario: 

• Contract Year 1: Aug 2026–Jul 2027. Usage crosses 80% in March 2027 → alert fires, one email sent.
• Aug 2027: new contract year begins, % Usage resets to ~0% (condition goes back to false).
• Contract Year 2: usage climbs again and crosses 80% in April 2028.

Question: In Year 2, once the condition goes false (Aug 2027) and then becomes true again (April 2028), will the alert fire again? Or does "Once - the first time it's true" mean the alert only ever sends a single email for the lifetime of that alert, regardless of the condition later resetting and re-triggering? 

I haven't been able to find documentation that's explicit about whether "Once" re-arms on a false→true transition, or whether it's a one-shot for the alert's entire existence. Has anyone tested this across a reset cycle, or does Tableau document this behavior anywhere? Trying to decide whether I need to manually recreate the alert each year or whether it'll keep working unattended. 

Tableau version: 2024.2.4