Question

我希望此查询循环播放，但在获得结果后添加此问题，＆＃34;是否要搜索其他列？＆＃34;

ACCEPT column_name CHAR 
PROMPT 'Please insert column name' 
SELECT DISTINCT owner, table_name 
FROM all_tab_columns 
WHERE column_name IN ('&column_name');

如果用户键入＆＃39; no＆＃39;程序结束于＆＃34;祝你有愉快的一天＆＃34;。如果用户键入“是”，则程序重新开始请求用户输入另一个列名。

我知道这很简单。我主要在SQL Server工作，但Oracle对我来说是新手

Answer 1

您可以使用以下两个SQL脚本文件执行此操作：

1）文件myscript.sql：

ACCEPT column_name CHAR PROMPT 'Please insert column name: '

SELECT DISTINCT owner, table_name
FROM all_tab_columns
WHERE column_name IN ('&column_name');

-- Ask the user if the want to search again
ACCEPT response CHAR PROMPT 'Would you like to search for another column? '

-- Use a SELECT statement to look at their response and set variable "script" as appropriate
COLUMN script new_value script

-- Stop this select's results being displayed (in SQL Plus)
SET TERM OFF

SELECT CASE LOWER('&response.') WHEN 'yes' THEN 'myscript' ELSE 'stop' END AS script
FROM DUAL;

-- Switch terminal output back on
SET TERM ON

-- Run whichever script the user chose i.e. "myscript.sql" if they said "yes", "stop.sql" if they said "no".
@&script.

2）文件stop.sql：

-- This script just says "Have a nice day" then ends.
PROMPT Have a nice day

根据用户是回答“是”还是“否”，脚本会再次运行（循环）或运行stop.sql脚本，它只是说“祝你有个美好的一天”。

想要这个简单的查询来循环

1 个答案: