HSQLDB 合并 WHEN MATCHED AND 失败

Posted 2023-04-18

【中文标题】HSQLDB 合并 WHEN MATCHED AND 失败

【英文标题】：HSQLDB merge WHEN MATCHED AND fails

【发布时间】：2016-02-17 19:57:37

【问题描述】：

我有以下表格：

create table WorkPendingSummary
(
    WorkPendingID int not null,
    WorkPendingDate date not null,
    Status varchar(20) not null,
    EndDate date null
)

create table WorkPendingSummaryStage
(
    WorkPendingID int not null,
    WorkPendingDate date not null,
    Status varchar(20) not null
)

然后我有以下合并语句：

MERGE INTO WorkPendingSummary w USING  WorkPendingSummaryStage
     AS vals(WorkPendingID, WorkPendingDate, Status) 
     ON w.WorkPendingID = vals.WorkPendingID
   WHEN MATCHED AND vals.status = 'CLOSED'  
         THEN UPDATE SET w.workpendingdate = vals.workpendingdate, w.status = vals.status, w.enddate = current_time

http://hsqldb.org/doc/guide/dataaccess-chapt.html#dac_merge_statement 上的文档指出，“WHEN MATCHED”语句可以有一个额外的“AND”子句，就像我上面所说的那样，但是失败了：

unexpected token: AND required: THEN : line: 4 [SQL State=42581, DB Errorcode=-5581]

此功能是否有效，还是我只是遗漏了什么？ 使用 HSQLDB 2.3.1。

谢谢！

【参考方案1】：

该文档适用于版本 2.3.3 和即将发布的 2.3.4。这些最新版本支持 AND 子句。