我的Oracle数据库中有表格
PROJECTINFO
NAME SCHEMA
--------------------------
Test W_TEST_000
SAMPLESET
NAME SS_ID
--------------------------
Test_SSet 1049
在我的SQL * Plus脚本中,有一个替换变量(直接设置或来自用户输入)
DEFINE Project_Name = 'Test'
DEFINE SampleSet_Name = 'Test_SSet'
现在我需要另外两个绑定变量
VAR Project_Schema varchar2(50)
VAR SampleSet_ID number
然后我需要将SELECT语句的结果放入两个绑定变量
SELECT SCHEMA INTO :Project_Schema FROM PROJECTINFO WHERE NAME = '&Project_Name';
SELECT SS_ID INTO :SampleSet_ID from SAMPLESET WHERE NAME = '&SampleSet_Name';
现在我需要在:Project_Schema
子表的SELECT语句中使用:SampleSet_ID
和W_TEST_000.MY_TABLE
,如下所示:
SELECT NAME FROM :Project_Schema.MY_TABLE WHERE SS_ID = :SampleSet_ID
但这不起作用..(ORA-00903:表名无效)
如何在同一SQL * Plus脚本中的未来SQL请求中使用绑定变量?
答案 0 :(得分:1)
如果将选择封装在PL / SQL块中,它将起作用,例如
DEFINE Project_Name = 'Test'
DEFINE SampleSet_Name = 'Test_SSet'
VAR Project_Schema varchar2(50)
VAR SampleSet_ID number
begin
SELECT SCHEMA
INTO :Project_Schema
FROM PROJECTINFO
WHERE NAME = '&Project_Name';
end;
/
begin
SELECT SS_ID
INTO :SampleSet_ID
from SAMPLESET
WHERE NAME = '&SampleSet_Name';
end;
/
--test the contents of the variable
Select :SampleSet_ID, :Project_Schema from dual;