一列作为另一列的子字符串

Question

I have 3 tables, as table-a, table-b and table-c. I have stuck with a problem where I have substring, say XYZ, present in column-1 of table-a, whereas in table-b i have some rows with XYZ as a substring in one of the column. I want to fetch all those rows from both of the tables, table-a as well as table-b, where I have one of the column from table-c='123'(eg)

Below is my query:

SELECT DISTINCT a.column-1, b.column-2 
FROM table-a a, table-b b, table-c c 
WHERE c.column='123' AND a.column-1=b.column-2;

With this query it is printing rows from table-b where only XYZ present but not %XYZ%.

Thanks in advance for co-operation..

Answer 1

我认为您要寻找的条件是：

AND b.column-2 LIKE CONCAT('%', a.column-1, '%')