While you can do what you want, it is not that simple. Besides standalone insert statements you have to deal with existing indentations produced by other rules that where applied for PL/SQL blocks, if statements, case statements, loops, etc.

This blog post is a basic introduction of the formatter in SQL Developer. It’s the wrong place to deal with specific formatter/Arbori questions and issues. The right place for these kind of questions is the Oracle forum for SQL Developer. I kindly ask you to seek help there. Thank you.

However i’m stuck when it comes to indent, i want to align to the first element of the INSERT INTO statement, in my exemple aligne to “col1”.
Can you help me further ?

Much appreciated
VM

prelude: runOnce
    -> {
    var count = 1;
    var accumulatedString = "";
    var accumulatedSet = [];
};

insertIntoBrk: 
[stmt) insert_into_clause & [node) column & [node) identifier & stmt {
            var node = tuple.get("node");
            var content = target.src[node.from].content;
            
            for( var i = 0; i<content.length; i++ ) {
                if(count % 3 == 0 ) {
                    var nodeIndent = '\n';
                    struct.putNewline(node.to + 1, nodeIndent);
                    break;
                }
            }
count++;
};

Yes, that’s doable