MySQL：如何在多个表中搜索任何列中存在的字符串

Question

如何搜索table_a table_b table_c，其中包含一个字符串的随机列数？

我知道这不是正确的sql但它会是这样的：

SELECT * FROM users, accounts, something_else WHERE ->ANY COLUMN CONTAINS 'this_string'<-

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Answer 1

将fulltext indexes添加到所有这些表中的所有字符串列，然后将结果联合起来

select * from table1 where match(col1, col2, col3) against ('some string')
union all
select * from table2 where match(col1, col2) against ('some string')
union all
select * from table3 where match(col1, col2, col3, col4) against ('some string')
...