HANA SQL：CASE WHEN 在 DO BEGIN...END 语句中

Question

有谁知道如何在 DO BEGIN...END 语句中使用 CASE WHEN 表达式？

作品：

WITH something_to_query_on AS (
SELECT 1 AS first_value, 2 AS second_value FROM dummy
UNION
SELECT 4 AS first_value, 3 AS second_value FROM dummy
)
SELECT first_value, second_value
, CASE WHEN first_value > second_value THEN 1 ELSE 0 END AS first_greater_second
FROM something_to_query_on
;

作品：

DO BEGIN
    something_to_query_on = SELECT 1 AS first_value, 2 AS second_value FROM dummy
                            UNION
                            SELECT 4 AS first_value, 3 AS second_value FROM dummy
                            ;
    
    SELECT first_value, second_value
    /*, CASE WHEN first_value > second_value THEN 1 ELSE 0 END AS first_greater_second*/
    FROM :something_to_query_on
    ;
END

不起作用：

DO BEGIN
    something_to_query_on = SELECT 1 AS first_value, 2 AS second_value FROM dummy
                            UNION
                            SELECT 4 AS first_value, 3 AS second_value FROM dummy
                            ;
    
    SELECT first_value, second_value
    , CASE WHEN first_value > second_value THEN 1 ELSE 0 END AS first_greater_second
    FROM :something_to_query_on
    ;
END

错误信息：

SQL Error [257] [HY000]: SAP DBTech JDBC: [257] (at 329): sql syntax error: line 10 col 2 (at pos 329)
  SAP DBTech JDBC: [257] (at 329): sql syntax error: line 10 col 2 (at pos 329)

感谢您的帮助。

Answer 1

在 Reinis Verbelis 回答后，我检查了另一个 IDE。似乎错误只出现在 DBeaver 中，但在 Eclipse 中没有出现在 HANA Modeler 中。将在他们的 Git 回购中提出问题。