插入触发器后Oracle-如何确保仅插入唯一记录？

如何解决插入触发器后Oracle-如何确保仅插入唯一记录？

我对Oracle 12c中的After Insert触发器有疑问。

我有一个Dimension表，其中通过UI进行DML操作。每当有“插入”或“更新”时，我都希望在另一个表中进行“插入”或“更新”，这称为“评级表”。

但是“维”表的粒度较低，而“评级”表的粒度较高，因此我只想在“评级”表中插入唯一记录。

有可能吗？怎么样？

谢谢您的帮助。

现有触发代码如下：-

create or replace TRIGGER RFJVBASE.KPI_COCKPIT_ATTR_AFTER_INS2
AFTER INSERT ON RFJVBASE.DIM_KPI_COCKPIT_ATTRS FOR EACH ROW
DECLARE
v_fiscal_week_start varchar2(50);
v_fiscal_week_month_end varchar2(50);
v_fiscal_week_qtr_end varchar2(50);
v_fiscal_week_semi_end varchar2(50);
v_fiscal_week_year_end varchar2(50);
BEGIN
select rfjvbase.run_dates('1-Jan-1900') into v_fiscal_week_start from dual;
select fiscal_month_end_week_name into v_fiscal_week_month_end from rfjvstg.stg_cockpit_business_dt;
select fiscal_qtr_end_week_name into v_fiscal_week_qtr_end from rfjvstg.stg_cockpit_business_dt;
select fiscal_semi_end_week_name into v_fiscal_week_semi_end from rfjvstg.stg_cockpit_business_dt;
select fiscal_year_end_week_name into v_fiscal_week_year_end from rfjvstg.stg_cockpit_business_dt;
/*Insert record into FCT table*/
IF (:new.KPI_TYPE = 'Quantitative') THEN
INSERT INTO RFJVBASE.FCT_KPI_COCKPIT_RATING
    (
PROCESS_KEY_FCT,CURRENT_PROCESS_RATING_KEY,PROCESS_RATING_KEY,CREATED_FISCAL_WEEK,VALID_THROUGH_FISCAL_WEEK,PROCESS_NAME,PROCESS_GROUP,PROCESS,PROCESS_INDICATOR_CLASS,PROCESS_INDICATOR_SEQUENCE,PERFORMANCE_INDICATOR_NAME,PERF_IND_SUB_LEVEL,UNIT,KPI_TYPE,ORG_UNIT,TOLERANCE_DIRECTION,TOLERANCE,TARGET,TARGET_ENABLE_FLAG,CREATED_DT,CREATED_BY,LAST_UPDATE_DT,LAST_UPDATED_BY,AUDIT_KEY
    )
VALUES
(
FCT_KPI_COCKPIT_RATING_SEQ.NEXTVAL,:new.PROCESS_KEY,v_fiscal_week_start,case when :new.ANNUAL_FREQUENCY = 1 then v_fiscal_week_year_end 
     when :new.ANNUAL_FREQUENCY = 2 then v_fiscal_week_semi_end
     when :new.ANNUAL_FREQUENCY = 4 then v_fiscal_week_qtr_end
     when :new.ANNUAL_FREQUENCY = 12 then v_fiscal_week_month_end
end,:new.PROCESS_NAME,:new.PROCESS_GROUP,:new.PROCESS,:new.PROCESS_INDICATOR_CLASS,:new.PROCESS_INDICATOR_SEQUENCE,:new.PERFORMANCE_INDICATOR_NAME,:new.PERF_IND_SUB_LEVEL,:new.UNIT,:new.KPI_TYPE,:new.ORG_UNIT,:new.TOLERANCE_DIRECTION,:new.TOLERANCE,:new.TARGET,:new.TARGET_ENABLE_FLAG,SYSDATE,:new.USERNAME,:new.AUDIT_KEY);
ELSE IF (:new.KPI_TYPE = 'Qualitative') THEN
INSERT INTO RFJVBASE.FCT_KPI_COCKPIT_RATING
    (
PROCESS_KEY_FCT,:new.AUDIT_KEY);
END IF;
END IF;
END;
/

解决方法

我只想在Rating表中插入唯一记录。

在评级表上

创建唯一索引，不允许插入重复项。让数据库执行肮脏工作，您只需放松休息即可。