格式化使用to_date ORACLE立即执行

Question

我在包中的格式化过程中卡住了。。。。。脚本运行良好，但将其与包集成起来很困难！！

我不习惯预言。。。我正在运行脚本，但包中没有。。。不是所有的…Drop Table工作

CREATE OR REPLACE PACKAGE BODY Testing is
    PROCEDURE DropTable1 IS         
        BEGIN
                execute immediate ('DROP TABLE mytable1');                           
        END;
    PROCEDURE PopulateTable1 IS
        BEGIN
            execute immediate ('CREATE TABLE mytable1
            AS (   
                select
                substr(t1.genarea,3,3) as M_Class,
                substr(t1.genarea,6,30) as M_Description,
                substr(t1.genarea,36,3) as M_Class,
                substr(t1.genarea,39,30) as M_Description,
                substr(t1.itemitem,1,3) as product_code,
                t3.CHANNEL_NUM as SALES_CHANNEL,
                to_date(''t2.time_id'',''dd-mon-yyyy'') as mis_date,
                sum(t2.ap_cw_cfi_irp+t2.ap_cw_issues_irp) as ap_gross,
                sum(t2.Ap_Cw_Cfi_Irp+t2.Ap_Revivals_Irp) as ap_net,
                sum(t2.sp_inc_irp+t2.sp_issues_irp) as sp_gross,
                sum(t2.sp_dec_irp+t2.sp_fs_irp) as sp_net
              from
                d_pr t1, act t2, age_map t3
              where
                t1.pfx=''IT'' and t1.coy=''1'' and t1.tabl=''T81'' and substr(t1.itemitem,1,3) = t2.product_id and t3.AGE_NUM = t2.age_id
              group by
                substr(t1.genarea,3,3),
                substr(t1.genarea,6,30),
                substr(t1.genarea,36,3),
                substr(t1.genarea,39,30),
                substr(t1.itemitem,1,3),
                t3.CHANNEL_NUM,
                to_date(''t2.time_id'',''dd-mon-yyyy'')
            )');
            COMMIT;
        END PopulateTable1;
END Testing;
/

感谢

Answer 1

t2.time_id周围不应该有引号。单引号用于表示字符串文字；这显然是一个专栏参考。

Answer 2

您的代码中有两件事看起来很奇怪：

• to_date(''t2.time_id'',''dd-mon-yyyy'')

列周围不需要任何单引号，只需要字符串文字周围的单引号。更改为：

to_date(t2.time_id,''dd-mon-yyyy'')

如果您在多个位置使用单引号，那么我建议引用字符串文字技术以避免由于字符串中的单引号而导致的错误。例如，请参见https://stackoverflow.com/a/27373394/3989608

• COMMIT;

对于DDL语句，不需要COMMIT，只需要对DML声明进行提交。移除它。

Answer 3

BEGIN
execute immediate ('CREATE TABLE mytable1 AS 
(select to_date(/*remove single quotes here*/t2.time_id/*and here*/,''dd-mon-yyyy'') as mis_date 
from (select current_date time_id from dual) t2)');
end;

在选择查询的最后一行中。因为它被视为字符串