如何在插入语句中使用每个月的动态 table 而我们在一列中传递一个静态值

Question

在一个存储过程中，我使用 insert into 语句将一个变量声明为 v_tbl_name，这是动态的。当我们在一列中传递一个静态值但出现错误时，我将在 insert into 块中使用此动态 table。这是示例代码-

declare
v_tbl_name varchar2(5) := NULL;
v_gen_tbl constant varchar2(50) := 'arch_tbl_mon';   --table name
v_sql varchar2(10000);

begin
 v_tbl_name := v_gen_tbl || '_' ||  TO_CHAR(SYSDATE, 'MON');
v_sql := 'insert into tbl                 --- another table going to insert
 (select ''abc'' as col1, ........
  from '||v_tbl_name||');'
execute immediate v_sql;
commit;
end;

这里 'abc' 静态值作为列。执行上面的代码后，它会生成一个错误，如 Encountered the symbol "Execute".

Answer 1

这样做：

declare
v_tbl_name varchar2(5) := NULL;
v_gen_tbl constant varchar2(50) := 'arch_tbl_mon';   --table name
v_sql varchar2(1000);
begin
 v_tbl_name := v_gen_tbl || '_' ||  TO_CHAR(SYSDATE, 'MON');
 v_sql:= 'insert into tbl                 --- another table going to insert
  select 'abc' as col1, ........
  from  '||v_tbl_name;
  execute immediate v_sql;
  commit;
end;

演示：

declare
v_tbl_name varchar2(5) := NULL;
v_gen_tbl constant varchar2(50) := 'arch_tbl_mon';   --table 
v_sql varchar2(1000);
begin

 v_tbl_name := 'DEPT';
 v_sql :='insert into tbl   select *  from '||v_tbl_name;
 execute immediate v_sql;  
end;

Exec:

SQL> select * from tbl;
     DEPTNO DNAME                LOC
     ---------- -------------------- --------------------
        1      XXX                 YYY

编辑：

Here 'abc' static value as column so that's why not able to execute the stored proc. It is generating an err like Encountered the symbol ' abc '.

请看下面的演示：

Table tbl 正在使用来自 select 语句的静态值 abc 填充：

SQL> select * from tbl;
    DEPTNO DNAME                LOC                  B
---------- -------------------- -------------------- ---

执行后：

 declare
    v_tbl_name varchar2(5) := NULL;
    v_gen_tbl constant varchar2(50) := 'arch_tbl_mon';   --table 
    v_sql varchar2(1000);
    begin

     v_tbl_name := 'DEPT';
     v_sql :='insert into tbl (deptno,dname,loc,b) select a.*, ''abc''  from '||v_tbl_name||' a'; 
     execute immediate v_sql;  
     Commit;
    end;

输出

SQL> SELECT * FROM TBL;
    DEPTNO DNAME                LOC                  B
---------- -------------------- -------------------- ---
       100 Executive            USA                  abc

最终编辑：

您没有按照我向您展示的内容进行操作，因此您陷入了问题。按照我的内联评论。请替换提到的列名称，它会得到解决。

declare
v_tbl_name varchar2(5) := NULL;
v_gen_tbl constant varchar2(50) := 'arch_tbl_mon';   --table name
v_sql varchar2(10000);

begin
 v_tbl_name := v_gen_tbl || '_' ||  TO_CHAR(SYSDATE, 'MON');
 v_sql := 'insert into tbl(col1,.....<all columns>)                 --- another table going to insert
  select ''abc'' as col1, a.col2........<other columns a.<columns>
  from '||v_tbl_name||' a';
execute immediate v_sql;
commit;
end;

如何在插入语句中使用每个月的动态 table 而我们在一列中传递一个静态值

How to use dynamic table of every month in the insert statement while one static value we are passing in one column

sql

oracle

plsql

stored-procedures

plsqldeveloper