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15 wrz 2008 · 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. If you are happy with an int, this works: SELECT CASE. WHEN Obsolete = 'N' or InStock = 'Y' THEN 1. ELSE 0. END as Saleable, * FROM Product.
Syntax IF boolean_expression { sql_statement | statement_block } [ ELSE { sql_statement | statement_block } ] Arguments boolean_expression. An expression that returns TRUE or FALSE. If the Boolean expression contains a SELECT statement, the SELECT statement must be enclosed in parentheses. { sql_statement | statement_block}
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)
28 maj 2024 · Syntax. Let’s look at the syntax for a CASE statement: SELECT column1, column2, CASE WHEN condition1 THEN result1. WHEN condition2 THEN result2. ELSE result_default. END AS alias_name. FROM table_name; Copy. Here, we use a SELECT and FROM query to select multiple columns from a table and use a CASE statement to evaluate conditions. 2.2.
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.
Summary. Use IF...THEN statement to conditionally execute a block of statements based on the evaluation of a specified condition. Use IF...THEN...ELSE statement to execute a block of statements if a specified condition is true and an alternative block of statements if the condition is false.
The syntax for the IF...ELSE statement in SQL Server (Transact-SQL) is: IF condition {...statements to execute when condition is TRUE...} [ ELSE {...statements to execute when condition is FALSE...}
