oracle - Oracle 匿名 PL/SQL 块中缺少关键字错误

Question

匿名 PL/SQL 块：

DECLARE
  CURSOR employees_in_10_cur
    IS
    SELECT *
    FROM ad_week_table

BEGIN
  FOR employee_rec 
  IN employees_in_10_cur
  LOOP
    DBMS_OUTPUT.put_line(employee_rec.ad_no || ',' || employee_rec.week_no);
  END LOOP;
END;

执行此块时出现缺少关键字错误。我究竟做错了什么？

Answer 1

您在光标末尾缺少一个分号：

CURSOR employees_in_10_cur
   IS
      SELECT *
        FROM ad_week_table;

错误消息将始终为您提供发生错误的行号。请始终检查并查看该区域。

例如; 如果我更改表以便可以运行它，我会得到以下信息：

SQL> declare
  2
  3     cursor employees_in_10_cur is
  4      select *
  5        from user_tables
  6
  7  begin
  8     for employee_rec in employees_in_10_cur loop
  9        dbms_output.put_line (
 10           employee_rec.ad_no || ',' || employee_rec.week_no );
 11     end loop;
 12  end;
 13  /
   for employee_rec in employees_in_10_cur loop
       *
ERROR at line 8:
ORA-06550: line 8, column 8:
PL/SQL: ORA-00905: missing keyword
ORA-06550: line 4, column 5:
PL/SQL: SQL Statement ignored
ORA-06550: line 11, column 4:
PLS-00103: Encountered the symbol "END" when expecting one of the following:
begin function pragma procedure subtype type <an identifier>
<a double-quoted delimited-identifier> current cursor delete
exists prior

您有 3 个错误；一个在第 8 行，因为光标无效，一个在第 11 行，因为循环没有发生，因为光标无效，一个在第 4 行，上面写着“语句被忽略”。

Answer 2

在定义游标查询后放置一个分号；

DECLARE
       CURSOR employees_in_10_cur
       IS
          SELECT *
            FROM ad_week_table;

    BEGIN
       FOR employee_rec 
       IN employees_in_10_cur
       LOOP
          DBMS_OUTPUT.put_line (
             employee_rec.ad_no || ',' || employee_rec.week_no );
       END LOOP;
    END;