mysql return table name

问题:

let's say i have this mysql table structure:

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

is there a way to search for a string in this two tables and then if the string occurs to return the table's name and the row id ?

回答1:

Assuming that the two tables have the same datatypes for id and news/content then a query along the lines of

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%' 

Should give you the result you're after

回答2:

You could try this:

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>%' 

回答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' 

文章来源: mysql return table name