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select case substr(status,1,1) -- you're only interested in the first character. when 'a' then 'Active'. when 'i' then 'Inactive'. when 't' then 'Terminated'. end as statustext. from stage.tst. However, there's a few worrying things about this schema.
Oracle CASE expression allows you to add if-else logic to SQL statements without having to call a procedure. The CASE expression evaluates a list of conditions and returns one of the multiple possible results. You can use a CASE expression in any statement or clause that accepts a valid expression.
26 Ιαν 2018 · The CASE statement is conditional flow control syntax. Many languages have this feature. Oracle has implemented it in both PL/SQL and into the SQL engine. In PL/SQL, there are two flavors. First, the CASE statement evaluates the contents of a variable and returns a value (implemented as a function).
2 Ιουν 2023 · The SQL CASE statement allows you to perform IF-THEN-ELSE functionality within an SQL statement. Learn more about this powerful statement in this article. This article applies to Oracle, SQL Server, MySQL, and PostgreSQL. Table of Contents. What Does the SQL CASE Statement Do? SQL CASE Statement Syntax. Parameters of the CASE Statement.
In a simple CASE expression, Oracle Database searches for the first WHEN... THEN pair for which expr is equal to comparison_expr and returns return_expr. If none of the WHEN... THEN pairs meet this condition, and an ELSE clause exists, then Oracle returns else_expr. Otherwise, Oracle returns null.
19 Απρ 2019 · I am using Sql Developer 19.1.0.094. I have a case statement that is causing trouble for the formatter and code outline. select case when "a" < "b" then "b" else "a" end from dual;--Here, "a" is a static value and "b" is a case statement. for example, select case when 2 < case when 1=1 then 1 else 0 end then case when 1=1 then 1 else 0 end
7 Δεκ 2023 · How to use CASE for IF-THEN logic in SQL SELECT. If you want to see the grade for each exam, select the case expression like a regular column: It’s a good idea to give the expression an alias. This is particularly important if the case is in a subquery.
