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22 cze 2018 · select *. ,case when 2015 >= year(startdate) and 2015 <= year(enddate) then 'yes' end as '2015'. ,case when 2016 >= year(startdate) and 2016 <= year(enddate) then 'yes' end as '2016'. ,case when 2017 >= year(startdate) and 2017 <= year(enddate) then 'yes' end as '2017'.
16 sty 2024 · The CASE WHEN statement in SQL is a pivotal tool. It provides a structured and flexible approach to conditional logic – one that mirrors everyday decision-making. Plus, its intuitive nature makes it an accessible yet powerful feature of SQL.
20 kwi 2021 · In the T-SQL scripting language, you can use the SQL CASE statement to evaluate a condition and return one or more result expressions. This SQL Tutorial will teach you when and how you can use CASE in T-SQL statements.
11 lut 2020 · In this article we look at different ways to use the SQL Server CASE statement to handle sorting, grouping and aggregates.
The SQL CASE Expression. The CASE expression goes through conditions and returns a value when the first condition is met (like an if-then-else statement). So, once a condition is true, it will stop reading and return the result. If no conditions are true, it returns the value in the ELSE clause.
26 cze 2023 · The WHERE clause in SQL queries filters data based on a specified expression or condition. We usually define a static condition or value, however, if you need to filter data based on different conditions, this can be done using SQL CASE in the WHERE clause.
28 cze 2023 · In summary, the SQL case statement enables users to flexibly handle conditional logic when querying data in a simple, readable format. Understanding the basic syntax and working with examples helps build a strong foundation in effectively implementing case statements within SQL projects.
