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8 Μαΐ 2014 · select avg(cr.sell_transfer) as sell, case when cr.rate_date between '02-10-2008' and '30-10-2008' then 'january' end as 'month' from currency_rate cr where cr.currency_id = 'currency -033' group by cr.rate_date
16 Ιαν 2024 · Here the CASE expression distinguishes between records with and without order dates, providing clear labels and enhancing the accuracy of data analysis. A row with a NULL OrderDate will be labeled as No Order Date , indicating that no specific order date is recorded for that transaction.
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.
28 Ιουν 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.
9 Μαρ 2022 · Learn how to use the BETWEEN operator in SQL Server with WHERE clause, with conditional IF, with CASE, INSERT, DELETE and UPDATE statements.
The CASE statement returns the result_1, result_2, or result_3 if the expression matches the corresponding expression in the WHEN clause. If the expression does not match any expression in the WHEN clause, it returns the esle_result in the ELSE clause. The ELSE clause is optional.
The SQL BETWEEN condition allows you to easily test if an expression is within a range of values (inclusive). It can be used in a SELECT, INSERT, UPDATE, or DELETE statement. How to use the BETWEEN Condition in SQL.
