如何在立即执行时将 table 名称添加到动态查询中？

Question

我很困惑，因为我不知道如何在 execute immediate 子句中将变量用作字符串。

declare
  variable1 varchar2(30):
  cur sys_refcursor;
begin
  open cur for
    select tablename from table1;

  loop
    fetch cur into variable1;
    exit when cur %notfound;

    execute immediate 'select count(*)
                         into variable1
                         from user_tables
                        where table_name =''' || variable1 || '''';
  end loop;

  close cur;

end;

这里variable1是一个table名字。应该有一个字符串值。怎么做？仍然有错误。

Answer 1

立即执行语句应如下所示：

execute immediate 'select count(*) from user_tables where table_name ='''||variable1||'''' into variable1;

查询后用into xxx

如何在立即执行时将 table 名称添加到动态查询中？

How to add table name into dynamic query in execute immediate?

sql

oracle

syntax

plsql

execute-immediate