PL SQL LOOP 逻辑 if else if

Posted 2023-03-27

【中文标题】PL SQL LOOP 逻辑 if else if

【英文标题】：PL SQL LOOP logic if else if

【发布时间】：2015-12-16 01:30:44

【问题描述】：

判断语句有错误

错误：PLS-00103：符号“ELSE” （开始案例声明结束 退出 goto if loop mod null pragma raise return select 同时更新

FETCH date_time into r_pernr,r_aedtm,r_tprog,r_nobeg,r_noend,r_sollz,r_pabeg,r_paend,r_pdunb;
 IF l_time_s < r_nobeg THEN 
   raise e_req_hour_error2; 
 ELSE IF l_time_e > r_noend THEN 
   raise e_req_hour_error3;
 ELSE IF l_time_e IS NULL AND l_time_s IS NULL THEN 
    l_time :=  r_sollz;
 ELSE IF l_time_s IS NOT NULL AND l_time_e IS NULL THEN 
   IF l_time_s >= r_nobeg AND l_time_s <= r_pabeg THEN  
     l_time := r_pabeg - l_time_s + ( r_noend - r_paend );
     ELSE IF l_time_s >= r_paend AND l_time_s <= r_noend THEN  
       l_time :=  r_noend - l_time_s;
     ELSE IF l_time_s > r_pabeg AND l_time_s < r_paend THEN  
       l_time := r_noend - r_paend;
     END IF;
 ELSE IF l_time_s IS NULL AND l_time_e IS NOT NULL THEN 

   IF l_time_e <= r_pabeg THEN 
     l_time := l_time_e - r_pabeg;
     ELSE IF  l_time_e <= r_noend AND l_time_e >= r_nobeg THEN 
     l_time := r_noend - r_paend;
     ELSE IF l_time_e >= r_paend AND l_time_e <= r_noend THEN 
       l_time := r_pabeg - r_nobeg + ( l_time_e - r_paend );
     END IF;
 ELSE IF l_time_s IS NOT NULL AND l_time_e IS NOT NULL THEN  
   IF l_time_s >= r_nobeg AND l_time_e <= r_pabeg THEN 
     l_time := l_time_e - l_time_s;
     ELSE IF l_time_s >= r_nobeg AND l_time_e >= r_pabeg AND l_time_e <= r_paend THEN 
     l_time := r_pabeg - l_time_s;
     ELSE IF l_time_s >= r_pabeg AND l_time_e <= r_noend THEN 
     l_time := l_time_e - r_paend; 
     ELSE IF l_time_s >= r_paend AND l_time_e <= r_noend THEN 
     l_time := l_time_e - l_time_s;         
   END IF;
   IF l_time = 0 THEN 
     raise e_req_hour_error4;
   END IF; 
  END IF;   

【参考方案1】：

语法错误是因为在Oracle中if else应该是如下所示的格式。

IF condition1 THEN
   ...statements to execute when condition1 is TRUE...

ELSIF condition2 THEN
   ...statements to execute when condition2 is TRUE...

ELSE
   ...statements to execute when both condition1 and condition2 are FALSE...

END IF;