我对 PL SQL 很陌生，我正在尝试编写一个触发器，它会在表 A 中的字段更新时触发，然后去更新表 B 中的字段。
第二个表可能没有任何相关记录，或者它可能有很多行（在这种情况下，我需要更新所有行）。
根据表 A 中更新的值（称为 HNCMA.AGREEMENT_EOI.STATUS），我想影响表 B 中更新的值（称为 LMD.LM_ACTIVITY_.ACTIVITY_STATUS_CODE）。
这是我到目前为止所得到的，但我收到了这个错误：
PLS-00103：在预期以下之一时遇到符号“=”：:=.(@%;
任何帮助将非常感激！！！！
谢谢
CREATE OR REPLACE TRIGGER TR_UPDATE_STATUS
AFTER UPDATE OF STATUS ON HNCMA.AGREEMENTS_EOI
FOR EACH ROW
DECLARE
VarStatus Varchar(10);
VarStatusCode Int;
BEGIN
if :new.Status = 'Proposed' then VarStatus = 2 else
if :new.Status = 'Recommended' then VarStatus = 5 else
if :new.Status = 'Funded' then VarStatus = 5 else
if :new.Status = 'Completed' then VarStatus = 6 else
if :new.Status = 'Withdrawn' then VarStatus = 34
end if
UPDATE
(SELECT LMD.LM_ACTIVITY.ACTIVITY_STATUS_CODE
FROM (HNCMA.AGREEMENTS_EOI INNER JOIN HNCMA.PROJECT ON HNCMA.AGREEMENTS_EOI.PROJECTID = HNCMA.PROJECT.PROJECTID) INNER JOIN (LMD.LM_POLYGON_PROJECT_REL INNER JOIN LMD.LM_ACTIVITY ON LMD.LM_POLYGON_PROJECT_REL.LMID = LMD.LM_ACTIVITY.LMID) ON HNCMA.AGREEMENTS_EOI.CASENO = LMD.LM_POLYGON_PROJECT_REL.LOCAL_PROJECT_NAME
WHERE (((HNCMA.PROJECT.CATCHMENT)='Murray') AND ((HNCMA.AGREEMENTS_EOI.CASENO)= :old.CASENO ));) s
Set s.ACTIVITY_STATUS_CODE = varstatuscode
End;
更新*
感谢@heaps 的帮助。我已经修改了我的代码以包含 CASE 函数并修复了我的格式错误。这是我到目前为止所得到的（当我取出更新语句时它可以工作），但我现在收到“SQL 命令未正确结束”错误......
帮助！？！
创建或替换触发器 TR_UPDATE_LMDB_STATUS1
AFTER UPDATE OF STATUS ON HNCMA.AGREEMENTS_EOI
FOR EACH ROW
DECLARE
VarStatus Varchar(50);
VarStatusCode Int;
BEGIN
VarStatus := :new.status;
CASE varstatus
WHEN 'Proposed' THEN VarstatusCode := 2;
WHEN 'Recommended' THEN VarStatusCode := 5;
WHEN 'Funded' THEN VarStatusCode := 5;
WHEN 'Completed' THEN VarStatusCode := 6;
WHEN 'Withdrawn' THEN VarStatusCode := 34;
END CASE;
UPDATE LMD.LM_ACTIVITY
SET ACTIVITY_STATUS_CODE = VarStatusCode
FROM (HNCMA.AGREEMENTS_EOI INNER JOIN HNCMA.PROJECT ON HNCMA.AGREEMENTS_EOI.PROJECTID = HNCMA.PROJECT.PROJECTID) INNER JOIN (LMD.LM_POLYGON_PROJECT_REL INNER JOIN LMD.LM_ACTIVITY ON LMD.LM_POLYGON_PROJECT_REL.LMID = LMD.LM_ACTIVITY.LMID) ON HNCMA.AGREEMENTS_EOI.CASENO = LMD.LM_POLYGON_PROJECT_REL.LOCAL_PROJECT_NAME
WHERE (((HNCMA.PROJECT.CATCHMENT)='Murray') AND ((HNCMA.AGREEMENTS_EOI.CASENO)= :old.CASENO )) ;
End;