如何在 varchar 列中搜索 varchar 变量？ PL SQL

Question

我想知道数据库中是否存在 Oracle 11g 中的某些给定职责。

假设我们有 10 个职责，我想搜索它们是否存在于包含 60 个职责的数据库中。

如何在 varchar 列中搜索 varchar 变量？

对于单个变量应该很容易..

declare
var varchar(100);
begin
var:='&var';
if var is not null 
then
select responsibility_name  FROM  apps.fnd_responsibility_tl where responsibility_name  _ ?
dbms_output.put_line(var||' EXISTS'); 
else
dbms_output.put_line(var||' ERROR'); 
end if;
end;
/

Answer 1

有两种方法可以做到这一点，简单的方法，以及您在问题中使用 PL/SQL 请求的方法。

首先，使用 SQL 的简单方法。这使用取自 a blog post by Arunkumar Ramamoorthy 的技巧，使用 REGEXP_SUBSTR 和 CONNECT BY 将逗号分隔列表转换为行。

WITH  search_criteria AS (
   SELECT   TRIM(REGEXP_SUBSTR('&search_criteria','[^,]+', 1, LEVEL)) AS search_responsibility
   FROM     dual
   CONNECT BY
            TRIM(REGEXP_SUBSTR('&search_criteria', '[^,]+', 1, LEVEL)) IS NOT NULL
)

SELECT   s.search_responsibility,  
         CASE WHEN r.responsibility_name IS NULL THEN 'ERROR' ELSE 'EXISTS' END AS status
FROM     search_criteria s
LEFT OUTER JOIN
         apps.fnd_responsibility_tl r ON (r.responsibility_name = s.search_responsibility);

其次，使用 PL/SQL 和 DBMS_OUTPUT 的更复杂的方法。这使用与 SQL 版本相同的原理，但使用游标检查每个责任是否存在，输出 EXISTS 或 ERROR 消息。

CREATE OR REPLACE PROCEDURE check_responsibilities (p_search_criteria IN VARCHAR2)
IS
  CURSOR c_responsibilities (p_responsibilities IN VARCHAR2)
  IS
   SELECT   TRIM(REGEXP_SUBSTR(p_responsibilities,'[^,]+', 1, LEVEL)) AS search_responsibility
   FROM     dual
   CONNECT BY
            REGEXP_SUBSTR(p_responsibilities, '[^,]+', 1, LEVEL) IS NOT NULL;

   lv_temp  apps.fnd_responsibility_tl.responsibility_name%TYPE;
BEGIN
   FOR c IN c_responsibilities(p_search_criteria)
   LOOP
      BEGIN
         SELECT   r.responsibility_name
         INTO     lv_temp
         FROM     apps.fnd_responsibility_tl r
         WHERE    r.responsibility_name = c.search_responsibility;

         dbms_output.put_line(c.search_responsibility || ' EXISTS');
      EXCEPTION 
         WHEN no_data_found THEN
            dbms_output.put_line(c.search_responsibility || ' ERROR');
      END;
   END LOOP;  
END;

如何在 varchar 列中搜索 varchar 变量？ PL SQL

How do you search varchar variables in varchar column ? PL SQL

oracle

plsql