Question

set pagesize 0 echo off;
SET LINESIZE 30000 LONG 300000000 LONGCHUNKSIZE 30000 Trimspool on;

WHENEVER SQLERROR EXIT SQL.SQLCODE

var1 timestamp
exec :var1 := select LOAD_TIME from xml_audit where subject_area=&2 and load_time=(select max(load_time) from xml_audit where status='PASSED');

我在下面的查询中使用varibale但是得到错误

SP2-0552: Bind variable "VAR1" not declared.

请帮助我

Answer 1

在PL / SQL中，您必须选择一个变量。

SELECT col INTO变量FROM table;

您还需要声明一个匿名块：

DECLARE
d_date DATE;
BEGIN
    SELECT sysdate INTO d_date FROM dual;
    SELECT col FROM table WHERE some_date = d_date
END;

Answer 2

遵循以下语法 - 这适用于SQL PLus，并且应该在Toad等中使用......：

VARIABLE x VARCHAR2(300);
EXEC :x:= 'MILLER';
SELECT ename FROM scott.emp WHERE ename = :x
/

SQL> VARIABLE x VARCHAR2(300);
SQL> EXEC :x:= 'MILLER';

PL/SQL procedure successfully completed.

SQL> SELECT ename FROM scott.emp WHERE ename = :x;

ENAME
----------
MILLER

SP2-0552：绑定变量＆＃34; VAR1＆＃34;没有宣布

2 个答案: