Oracle 更新现有记录或插入新记录

Question

我有一个这样定义的表：

CIC3.WBCOURSEACTIVITY
(
  WCA_RID           NUMBER,
  WCA_TNA_ID        NUMBER,
  WCA_REG_RID       NUMBER,
  WCA_ANSWERED_PTS  NUMBER,
  WCA_TOTAL_PTS     NUMBER,
  WCA_TITLE         VARCHAR2(50 BYTE)
)

我想更新任何我发送相同 WCA_TNA_RID 和 WCA_REG_RID 组合的记录，否则我想插入一条新记录。我在 WCA_RID 上有一个序列

这看起来会奏效还是会更好？

CREATE OR REPLACE procedure CIC3.f_savewbpoints(pParticipantID number, pRegRid number, pAnsweredPoints number, pTotalPoints number, pTitle VARCHAR2) is
    vWcaRid number;
begin    
    SELECT DISTINCT wca_rid INTO vWcaRid 
    FROM wbcourseactivity 
    WHERE wca_reg_rid = pRegRid 
      AND wca_tna_id = pParticipantID;

    UPDATE wbcourseactivity 
    SET wca_answered_pts = pAnsweredPoints
      , wca_totalPts = pTotalPoints
      , wca_title = pTitle
    WHERE wca_rid = vWcaRid
    IF (NVL(SQL%ROWCOUNT, 0) = 0) THEN 
            INSERT INTO wbcourseactivity (wca_tna_id
                                        , wca_reg_rid
                                        , wca_answered_pts
                                        , wca_total_pts
                                        , wca_title) 
            VALUES 
                                         (pParticipantID
                                        , pRegRid
                                        , pAnsweredPoints
                                        , pTotalPoints
                                        , pTitle);
    END IF; 
    commit;
end;
/

Answer 1

你可以使用MERGE：

CREATE OR REPLACE procedure CIC3.f_savewbpoints(pParticipantID number, pRegRid number, pAnsweredPoints number, pTotalPoints number, pTitle VARCHAR2) is
begin
    merge into wbcourseactivity a
    using (
        SELECT DISTINCT wca_rid, wca_reg_rid, wca_tna_id
        FROM wbcourseactivity 
        WHERE wca_reg_rid = pRegRid 
        AND wca_tna_id = pParticipantID;
    ) b on (
        a.wca_rid = b.wca_rid
        and a.wca_reg_rid = b.wca_reg_rid
        and a.wca_tna_id = b.wca_tna_id
    )
    when matched then update set a.wca_answered_pts = pAnsweredPoints
    when not matched then insert (wca_tna_id, wca_reg_rid, wca_answered_pts, wca_total_pts, wca_title)
                        values (pParticipantID, pRegRid, pAnsweredPoints, pTotalPoints, pTitle);
    commit;
end;
/