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8 Οκτ 2016 · Then, you want to select the SSN when none of the rejection conditions is met (NOT ... AND NOT ...), but. WHEN LTRIM(RTRIM(a.MEMBER_SSN)) NOT LIKE '9__[789]%' THEN a.MEMBER_SSN would select the SSN regardless of the following conditions. Here is one option how to write the conditions using AND and OR:
11 Δεκ 2023 · SQLPro for MSSQL, DBeaver, and Navicat for SQL Server are probably your best bets out of the 6 options considered. "Multiple connection methods" is the primary reason people pick SQLPro for MSSQL over the competition.
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.
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 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.
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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.
