this is the question.
i have a table on db call #__macroregioni and 4 field, populate the same field on plugin.
i have other table call #__regioni and 20 field, populate same fiend on plugin.
need to filter the second if the first is select example
first fied (value 1)
second field (value 3,6)
---
forst fiels (value 2)
second filed (value 1,2,4,5)
.i spossible to do join left to make relation between the table?
tnks