在 Databricks 中使用 SQL 的语句时，如何在单个案例中创建多个“ELSE”语句？

Question

I have a query I am trying to build based on an if/else custom calculation in tableau in Databricks and I am having trouble re-writing the logic in SQL as a new field using 'Case When' from the If/Else logic in Tableau.

Tableau calc:

IF ATTR(MEMBER) = 'TRUE'
THEN IF (ATTR([MARKE]) = 'VT'
AND (ATTR([MARKET]) = 'VT' AND PRICE < 5000 AND THRESHOLD > 100) OR
     (ATTR([MARKET]) = 'SEA' AND PRICE < 3500 AND THRESHOLD > 85) OR
     (ATTR([MARKET]) = 'CAL' AND PRICE < 1750 AND THRESHOLD > 50)
     THEN 50
ELSE SPLIT_PERCENT END
ELSE
IF ATTR([MARKET]) = 'AUSTIN' THEN [AUSTIN_SPLIT]
ELSE IF ATTR([MARKET]) = 'NYC' THEN [NYC_SPLIT]
ELSE SPLIT_PERCENT/100 END END END

Here is my current query that is failing:

CASE WHEN MEMBER = 'TRUE' AND 
     (MARKET = 'VT' AND PRICE < 5000 AND THRESHOLD > 100) OR
     (MARKET = 'SEA' AND PRICE < 3500 AND THRESHOLD > 85) OR
     (MARKET = 'CAL' AND PRICE < 1750 AND THRESHOLD > 50) THEN 50
     ELSE SPLIT_PERCENT
     
     ELSE CASE WHEN MARKET = 'AUSTIN' THEN AUSTIN_SPLIT
               WHEN MARKET = 'NYC' THEN NYC_SPLIT
     ELSE SPLIT_PERCENT/100

END AS NEW_STANDARD_SPLIT

The Idea is to incorporate all of these conditions into a single field called 'New Standard Split'. I read up on having multiple 'ELSE' statements and that is where my syntax came from but I am still erroring out. Any help would be much appreciated.

Answer 1

Let me point out you did not preserve the logic that was in Tableau. Every time Tableau says "IF" your Sql needs to say "CASE". Now look at Tableau's line 2 - it's missing from the Sql. Really, that's the only difference. Try it - start over with the Tableau example, replace "IF" with "CASE", take out the Attr() declarations and you should be good to go.