mysql返回表名

Question

让我说我有mysql table structure：

table : articles
----------------
id
content

table : news
------------
id
news

有没有办法在这两个表中搜索字符串，然后是否出现字符串以返回表的名称和行ID？

Answer 1

假设这两个表具有相同的id和news / content数据类型，那么就是

的查询

SELECT id, 'articles' as tablename
WHERE content like '%string to search for%'
UNION
SELECT id, 'news' as tablename
WHERE news like '%string to search for%'

应该给你你之后的结果

Answer 2

你可以试试这个：

SELECT 'articles' as table_name, id
FROM `articles` 
WHERE content like '%<my_string>%'

UNION

SELECT 'news' as table_name, id 
FROM `news` 
WHERE news like '%<my_string>%'

Answer 3

SELECT * FROM (

SELECT id, content as text, 'articles' as tablename
FROM articles

UNION ALL

SELECT  id, news as text, 'news' as tablename
FROM news

) as tmp 

WHERE text = 'SEARCH_TERM'