[英]HANA SQL: CASE WHEN in DO BEGIN ... END statements
有誰知道如何在 DO BEGIN...END 語句中使用 CASE WHEN 表達式?
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
錯誤信息:
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)
感謝您的幫助。
在 Reinis Verbelis 回答后,我檢查了另一個 IDE。似乎錯誤只出現在 DBeaver 中,但在 Eclipse 中沒有出現在 HANA Modeler 中。將在他們的 Git 回購中提出問題。
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