从另一个表的另一列中选择带有关键字的列

Question

I need help with a probably simple SQL problem. quite new with SQL so not sure how to solve this. My problem is that i'm trying to select a columnA where the data in the column contains keywords from another columnB in tableB. an example of how the data is as below.

tableA, columnA : {'This apple is red', 'This ball is round', 'This chair is metal'}
tableB, columnB : {'red', 'round'}

Now im thinking something like this query

SELECT columnA FROM tableA
WHERE columnA LIKE '%' + (SELECT columnB FROM tableB) + '%'

So obviously it won't work because the subquery returns more than 1 value. I'm trying to see some other functions to use like CURSOR but I can't figure it out. Help is very appreciated, thank you.

Answer 1

Use EXISTS instead:

SELECT columnA FROM tableA A
WHERE EXISTS (SELECT 1 FROM tableB B where A.columnA LIKE '%' + B.columnB + '%') 

Answer 2

You can try this:

select * from tableA A
JOIN tableB B on A.columnA  like '%' + B.columnB +'%'