Oracle IF/ELSE语句

Question

我正在使用Oracle SQL Developer在Oracle12c中编写一个过程.我需要做的是检查表格以查看是否存在记录.如果是,那我需要编辑它.如果没有,那么我需要添加它.

所以,我的"伪代码"逻辑看起来像这样:

If (Select * from MyTable where MyValue = 0) has more than one record, then
  This will be an EDIT line of code
else
  This will be an ADD line of code
end

我将如何在Oracle SQL Developer中编写它？

编辑:

目前我的代码看起来像这样,我需要添加一块来更新记录.如果Line_ID存在,我需要更新记录.如果没有,我需要添加它.

create or replace PROCEDURE CST_WRITE_FEEDBACK (
v_AuditID IN NUMBER,
v_BenefitID IN NUMBER,
v_Network1 IN VarChar,
v_Network2 IN VarChar,
v_Network3 IN VarChar,
v_Network4 IN VarChar,
v_Issue1 IN NUMBER,
v_Issue2 IN NUMBER,
v_Issue3 IN NUMBER,
v_Issue4 IN NUMBER,
v_Resolution1 IN NUMBER,
v_Resolution2 IN NUMBER,
v_Resolution3 IN NUMBER,
v_Resolution4 IN NUMBER,
v_Status IN NUMBER,
v_Comment IN VarChar,
v_LineID IN NUMBER,
v_EmpID IN NUMBER
)
AS 
BEGIN

IF 

  INSERT INTO F_AUDIT_LINE ("AUDIT_ID", "BENEFIT_ID", "NETWORK", "NETWORK2", "NETWORK3", "NETWORK4", 
  "ISSUE_ID", "ISSUE_ID2", "ISSUE_ID3", "ISSUE_ID4",
  "RESOLUTION_ID", "RESOLUTION_ID2", "RESOLUTION_ID3", "RESOLUTION_ID4", 
  "LINE_STATUS")
  VALUES (v_AuditID, v_BenefitID, v_Network1, v_Network2, v_Network3, v_Network4,
  v_Issue1, v_Issue2, v_Issue3, v_Issue4,
  v_Resolution1, v_Resolution2, v_Resolution3, v_Resolution4,
  v_Status
  );

END CST_WRITE_FEEDBACK;

Answer 1

declare
  i number;
begin
  Select count(*) into i from MyTable where MyValue = 0;
If (i > 0)  then
  update ...
else
  insert ...
end;
/

但正如评论中所述,您可以通过以下方式获得:

merge into MyTable m
using (select v_AuditID, v_BenefitID, v_Network1, v_Network2, _Network3, _Network4, 
              v_Issue1, v_Issue2, v_Issue3, v_Issue4, 
              v_Resolution1, v_Resolution2, v_Resolution3, v_Resolution4, v_Status 
       from dual) d
on (d.MyValue = m.Myvalue)
when matched then 
  update set ..
when not matched then 
  insert ...

如果您提供程序代码,我们可以为您扩展命令.