for-loop - for循环中的语法错误

Question

从命令的第 1 行开始的错误：

DECLARE
   x NUMBER := 0;
   counter NUMBER := 0;
BEGIN
   FOR i IN 1..4 LOOP
      x := x + 1000;
      counter := counter + 1;
      INSERT INTO temp VALUES (x, counter, 'in OUTER loop');
      END;
   END LOOP;
   COMMIT;
END;

错误报告：

ORA-06550: line 11, column 10:
PLS-00103: Encountered the symbol ";" when expecting one of the following:

loop
06550. 00000 -  "line %s, column %s:\n%s"
*Cause:    Usually a PL/SQL compilation error.
*Action:

Answer 1

对于这种插入模式，您不需要 PL/SQL。以下适用于纯 SQL：

create table temp(x number, counter number, text varchar2(20));

insert into temp
select (rownum-1)*1000, rownum-1, 'in OUTER loop'
from dual
connect by level <=4;

Answer 2

第END;11 行的第一个不应该在那里：

DECLARE
   x NUMBER := 0;
   counter NUMBER := 0;
BEGIN
   FOR i IN 1..4 LOOP
      x := x + 1000;
      counter := counter + 1;
      INSERT INTO temp VALUES (x, counter, 'in OUTER loop');
   END LOOP;
   COMMIT;
END;

只有在（比如说）周围有一个子块时才需要它INSERT，例如用于特定的异常处理。

通常在以下位置指定列名也会更好INSERT：

      INSERT INTO temp(col1, col2, col3) VALUES (x, counter, 'in OUTER loop');