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  1. stackoverflow.com › questions › 63447How do I perform an IF...THEN in an SQL SELECT?

    15 wrz 2008 · 30 Answers. Sorted by: 2052. The CASE statement is the closest to IF in SQL and is supported on all versions of SQL Server. SELECT CAST( CASE. WHEN Obsolete = 'N' or InStock = 'Y' THEN 1. ELSE 0. END AS bit) as Saleable, * FROM Product. You only need to use the CAST operator if you want the result as a Boolean value.

  2. learn.microsoft.com › en-us › sqlIF...ELSE (Transact-SQL) - SQL Server | Microsoft Learn

    The Transact-SQL statement that follows an IF keyword and its condition is executed if the condition is satisfied: the Boolean expression returns TRUE. The optional ELSE keyword introduces another Transact-SQL statement that is executed when the IF condition isn't satisfied: the Boolean expression returns FALSE .

  3. www.sqlservertutorial.net › sql-server-stored-procedures › sql-server-if-elseSQL Server IF ELSE Statement By Examples - SQL Server Tutorial

    The IF...ELSE statement is a control-flow statement that allows you to execute or skip a statement block based on a specified condition. The IF statement. The following illustrates the syntax of the IF statement: IF boolean_expression . BEGIN . { statement_block } END Code language: SQL (Structured Query Language) (sql)

  4. www.baeldung.com › sql › select-conditional-logicHow to Execute an IF…THEN Logic in an SQL SELECT Statement -...

    28 maj 2024 · The CASE statement acts as a logical IF-THEN-ELSE conditional statement. We can use it to perform conditional branching within the SELECT statement across various SQL databases , including SQL Server, MySQL, and PostgreSQL .

  5. www.mssqltips.com › sqlservertip › 7390SQL IF Statement for Conditional Logic - SQL Server Tips

    12 wrz 2022 · SQL ELSEIF and ELSE Condition. Like many other programming languages, T-SQL can pair the IF keyword with ELSE IF and ELSE to more easily check multiple mutually exclusive scenarios. When combined, the first statement must be a single IF statement. This can be optionally followed by one or more ELSE IF statements.

  6. learn.microsoft.com › en-us › sqlELSE (IF...ELSE) (Transact-SQL) - SQL Server | Microsoft Learn

    Imposes conditions on the execution of a Transact-SQL statement. The Transact-SQL statement (sql_statement) following the boolean_expression is executed if the boolean_expression evaluates to TRUE. The optional ELSE keyword is an alternate Transact-SQL statement that is executed when boolean_expression evaluates to FALSE or NULL.

  7. tomaszkenig.pl › kurs-sql-server › t-sql-if-instrukcja-warunkowa-if-then-else-wInstrukcja warunkowa If Then Else w Transact-SQL - TomaszKenig.pl

    30 lis 2019 · Instrukcję IF THEN ELSE w SQL Server możemy używać w T-SQL m. in. w blokach anonimowych, procedurach, funkcjach, triggerach. Składnia T-SQL If Then Else wygląda następująco: --tomaszkenig.pl. IF Boolean_expression_1. {...polecenie wykonywane, gdy warunek_1 jest spełniony - ma wartość TRUE...} [ ELSE IF Boolean_expression_2 .

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