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8 Οκτ 2016 · The SSN has a 9 as the first digit and a 7, 8 or 9 as the fourth digit; The fourth and the fifth digits are 00 (except 800-00-0000) The sixth through ninth digits are 0000; I wrote case statement as below but it's not working, can someone help please:
The CASE expression provides conditional SQL expressions. You can use case expressions anywhere you can use an expression. The syntax of the CASE expression is as follows: CASE expression . WHEN expression THEN expression [, …] [ ELSE expression ] END. You cannot use a subquery as a value expression in a CASE statement.
7 Μαΐ 2017 · The simple way to achieve this goal is to add a CASE expression to your SELECT statement. In this article, we'll introduce you to the syntax, formats, and uses of the CASE expression. The CASE expression is a conditional expression: it evaluates data and returns a result.
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.
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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.
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.