Question

我需要运行一个查询，我需要使用一个常量（这样我们就可以更改其值并直接影响查询中使用的值）。

declare 
QTY_TRESHOLD CONSTANT NUMBER(10,0) := 1;
begin
    select * from FD111200_DBF where M_NB = QTY_TRESHOLD
end;

如果我尝试运行上述操作，我会在第一个语句中收到以下错误：

An error occurred when executing the SQL command:
declare 
QTY_TRESHOLD CONSTANT NUMBER(10,0) := 1

ORA-06550: line 2, column 39:
PLS-00103: Encountered the symbol "end-of-file" when expecting one of the following:

   * & = - + ; < / > at in is mod remainder not rem
   <an exponent (**)> <> or != or ~= >= <= <> and or like like2
   like4 likec between || multiset member submultiset [SQL State=65000, DB Errorcode=6550] 

Execution time: 0.01s

1 statement(s) failed.

我做错了什么？看一下Oracle的the sample，看起来这应该是很好的语法。谁能帮我理解？

Answer 1

更多评论而非答案，但评论时间过长; 我刚刚尝试添加INTO和;：

的代码

SQL> CREATE TABLE FD111200_DBF(M_NB NUMBER);

Table created.

SQL> insert into FD111200_DBF values (1);

1 row created.

SQL> declare
  2      QTY_TRESHOLD CONSTANT NUMBER(10,0) := 1;
  3      var number;
  4  begin
  5      select M_NB
  6      into var
  7      from FD111200_DBF where M_NB = QTY_TRESHOLD;
  8      --
  9      dbms_output.put_line(var);
 10  end;
 11  /
1

PL/SQL procedure successfully completed.

声明要在查询中使用的常量

1 个答案: