SQL Server How to count consecutive fields across a row with a start point?

By -

I have a table that for headers has account number, 2022 gift, 2021 gift, 2020 gift, 2019 gift, etc. through to 2004 gift (example below only shows a few columns for visual).

I am looking for code that will count how many consecutive years the donor gave a gift starting with the 2022 gift column and going back from there. So for instance if they gave a gift every year between 2022 and 2016 it should set the count equal to 7. If they didn't give a gift in 2022 (regardless of giving in other years), it would return 0. If they gave a gift in 2022, 2021, 2020 and then skipped 2019 but had given in 2018, it would return 3. Sometimes a field without a gift will be null but other times it will be '0' (both of which would be considered a gap; in case that information is helpful).

Any help would be greatly appreciated. Thanks in advance!

Table Example

Acct # 2022 Gift 2021 Gift 2020 Gift 2019 Gift 2018 Gift 2017 Gift 2016 Gift Count
546885 200 12 74 956 23 45 8559 7
253145 40 5 26 56 20 3
524865 854 523 75 52 0 0

I thought I could do a bulky case when for every possibility (ex. case when 2022 gift <1 then '0' when (all years) > 0 then '20' when 2022 gift >0 and 2021 gift >0 and 2020 gift >0, etc. but I know there has to be a better way to do it than that. My SQL skills are pretty low so my hope is that there is a better way to do it than the huge case when with every possibility.



Comments

Post a Comment

Popular posts from this blog

Spring Elasticsearch Operations

By -
Elasticsearch Operations Spring Data Elasticsearch uses two interfaces to define the operations that can be called against an Elasticsearch index. These are ElasticsearchOperations and ReactiveElasticsearchOperations. Whereas the first is used with the classic synchronous implementations, the second one uses reactive infrastructure. The default implementations of the interfaces offer: Read/Write mapping support for domain types. A rich query and criteria api. Resource management and Exception translation. ElasticsearchTemplate The ElasticsearchTemplate is an implementation of the ElasticsearchOperations interface using the Transport Client. @Configuration public class TransportClientConfig extends ElasticsearchConfigurationSupport {   @Bean   public Client elasticsearchClient() throws UnknownHostException {                      Settings settings = Settings.builder().put("cluster.name", "elasticsearch")....
Read more

Object oriented programming concepts (OOPs)

By -
Object-oriented programming (OOP) is a programming paradigm based on the concept of "objects". Re-usability is the main concept of Oops. There are few major principles of object-oriented paradigm. If any programming Language supports this principles that programming language called Object-oriented programming. Below are object oriented programming concepts : 1. Object        Read More about Object     http://theprogrammersfirst.blogspot.in/2016/07/java-object-concept.html
Read more

Spring Boot and Vaadin : Filtering rows in Vaadin Grid

By -
Adding a text field for filtering: Start by adding a text field above the grid. Remember, MainView is a VerticalLayout, so you need to add the text field before the grid. MainView.java public class MainView extends VerticalLayout {   private ContactService contactService;   private Grid<Contact> grid = new Grid<>(Contact.class);   private TextField filterText = new TextField(); ①   public MainView(ContactService contactService) {   this.contactService = contactService;   addClassName("list-view");   setSizeFull();   configureFilter(); ②   configureGrid();   add(filterText, grid); ③   updateList();   }   private void configureFilter() {   filterText.setPlaceholder("Filter by name..."); ④   filterText.setClearButtonVisible(true); ⑤   filterText.setValueChangeMode(ValueChangeMode.LAZY); ⑥   filterText.addValueChangeListener(e -> updateList()); ⑦   }   // Grid...
Read more