Question

CREATE VIEW ITCC.release_testcase_count 
AS 
(
SELECT CONCAT(rtm.requirement_id,'-',tct.release_id) AS id,
       rtm.requirement_id AS requirement_id,
       tct.release_id AS release_id, 
       COUNT(tct.release_id) AS testcase_count
from testcase_version tcv 
  INNER JOIN tcr_catalog_tree_testcase tct ON tcv.id = tct.testcase_version_id 
  LEFT JOIN requirement_testcase_mapping rtm ON rtm.testcase_id=tcv.testcase_id
GROUP BY tct.release_id , rtm.requirement_id
);

相同的查询适用于ms sql和我的sql，没有任何语法错误。我也想在oracle中执行它，但是我却因为相同而报错

Answer 1

Oracle CONCAT函数仅需要两个参数，而不是三个或三个以上参数。代替使用CONCAT，只需使用串联运算符：

CREATE VIEW ITCC.release_testcase_count AS (
    SELECT rtm.requirement_id || '-' || tct.release_id AS id,
    ...
)

或者，如果您真的想在此处使用CONCAT，则可以将它们链接在一起：

CREATE VIEW ITCC.release_testcase_count AS (
    SELECT CONCAT(rtm.requirement_id, CONCAT('-', tct.release_id)) AS id,
    ...
)

收到错误ORA-00909：参数数量无效

1 个答案: