When doing a MERGE in Oracle SQL how can I update rows that aren t matched in the SOURCE

0 votes

I have a main database and a report database, and I need to sync a table from main into report.

However, when an item gets deleted in the main database, I only want to set an IsDeleted flag in the report database.

What is an elegant way to do this?

I'm currently using a MERGE statement, like this:

MERGE INTO report.TEST target
USING (SELECT * FROM main.TEST) source
   ON (target.ID = source.ID)
WHEN MATCHED THEN
    UPDATE SET (target... = source...)
WHEN NOT MATCHED THEN
    INSERT (...) VALUES (source...)
;

The WHEN NOT MATCHED statement gives me all NEW values from main, but I also want to update all OLD values from report.

I'm using Oracle PL/SQL.


 

Nov 4 in Others by gaurav
• 22,040 points
36 views

1 answer to this question.

0 votes

I see you asked it a long time ago, hope still this can help.

I had the same problem and this is how I solved it. (showing on your code)

@State private var minimum: Double = 98.0
@State private var maximum: Double = 1000000.0

var filteredProducts: [Product]

var body: some View {
    List {
        Section(header: Text("Filters")){
            DisclosureGroup("Price range") {
                Slider(value: $minimum, in: 98...maximum) {
                    Text("\(minimum)")
                } minimumValueLabel: {
                    Text("min")
                } maximumValueLabel: {
                    Text("\(maximum, specifier: "%.0f")")
                }
                
                Slider(value: $maximum, in: minimum...1000000) {
                    Text("\(maximum)")
                } minimumValueLabel: {
                    Text("\(minimum, specifier: "%.0f")
                } maximumValueLabel: {
                    Text("\(maximum, specifier: "%.0f")")
                }
            }
        }
    }
}

Basically, give your Min value Slider your @state max value and vice versa for the Max value Slider. 

answered Nov 7 by gaurav
• 22,040 points

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