Question

I’ve a table which has data something like below. I want to get rows which contains in category column ‘2’? How shold I set the query? I need that for update the row. The category column has ‘text’ type.

id  category
-------------------
13  -1-,
14  -2-,
15  -1-,-2-,-3-,-4-,
16  -2-,-4-,

After update the data should be like that:

id  category
-------------------
13  -1-,
14  -5-,
15  -1-,-5-,-3-,-4-,
16  -5-,-4-,

Answer 1

Select those categories like this:

select * from your_table where category like '%-2-%'

But your example looks like you want to replace 2 with 5. It can be done like this:

update your_table set category = replace(category, '-2-', '-5-')

That way you need no whereclause.