对名称中包含数字的表立即执行

Question

我的包中有一个立即执行程序，当 v_object_name 类似于 20200823_AGL 时，我收到此错误：

ORA-00903: Invalid table name

我该如何解决？

EXECUTE IMMEDIATE 'SELECT MAX(LAST_UPDATE),COUNT(*) FROM ' || v_object_name || ''
                                                                 INTO v_max_update_date,
                                                                      v_count;

Answer 1

来自 Oracle 文档：Schema Object Names and Qualifiers

Nonquoted identifiers must begin with an alphabetic character from your database character set. Quoted identifiers can begin with any character.

EXECUTE IMMEDIATE 'SELECT MAX(LAST_UPDATE),COUNT(*) FROM "' || v_object_name || '"'
                                                                 INTO v_max_update_date,
                                                                      v_count;

一个更完整的例子：

declare
  v_object_name char(12) := '20200823_AGL';
  v_count pls_integer;
begin
  execute immediate 'select count(*) from "' || v_object_name || '"'
  into v_count;
--
  DBMS_OUTPUT.PUT_LINE('v_count = ' || v_count);
end;

Answer 2

此类对象可能是使用双引号创建的。

create view "1_test_view" as select 1 col_name from dual; --> ORA-00999: invalid view name

create view "1_test_view" as select 1 col_name from dual: --> works fine

表格规则相同

在这种情况下，您还需要使用双引号从此类对象中查询

select * from 1_test_view; --> ORA-00903: Invalid table name

select * from "1_test_view"; --> will work fine

对名称中包含数字的表立即执行

execute immediate for tables having number in their names

oracle

plsql

execute-immediate