Question

I have 2 tables, one is a table of parameters that the other table can have, and they’re stored like this:

Table 1

id         name
1          var1
2          var2
3          var3

Table 2

id         name       parameters
1          name1      var1|var3
2          name2      var2
3          name3      var1|var2|var3

Now, when I run a DELETE query, I want to update table 2 parameters aswell, so let’s say I run a DELETE query on table 1, row 1, I want to get the following table 2 result, should I query for it:

Table 2

id         name       parameters
1          name1      var3
2          name2      var2
3          name3      var2|var3

Any help would be appreciated, Thanks

Answer 1

You should restructure your tables. Normalized data modelling would tell you to use an n-to-m table structure (many-to-many or junction). So create a third table which has all references to both of your tables and resides in between your current two tables.