Sql if Пропустить и перейти к основному содержимому Переход к интерфейсу чата Ask Learn 5 days ago · Name Summary; CASE expr: Compares the given expression to each successive WHEN clause and produces the first result where the values are equal. salesman = 'VIKKIE' THEN 'ICKY' ELSE b. Follow edited Apr 13, 2013 at 7:26. The first boolean_expression is always evaluated. to execute the SQL statements based on the specified conditions. The following table outlines the main differences between the IF statement and the IIF() function. com Jan 2, 2025 · Learn how to use IFELSE and CASE statements in SQL to implement conditional logic and categorize data. Otherwise, the lines inside the Else block are executed. Jun 11, 2020 · sql中没有if语句，但有case语句，而且是所有数据库都支持的，语法是case when 条件1 then 结果1 when 条件2 then 结果2 else 结果N end，可以有任意多个条件，如果没有默认的结果，最后的else也可以不写， 在条件结束后也可以继续跟其他的条件，具体看实例。 If you are using a more modern version of SQL, it is useful to know that SQL Server 2012 introduced the very handy IIF function. A new look for Jun 28, 2024 · Wenn die Bedingung zu ausgewertet wird Falsch dann T-SQL-Anweisungen gefolgt von ELSE Schlüsselwort wird ausgeführt. lyo gkj ybfpaki eqky kgilnv loyeh pmptm hqkj uhz oqnnap ilaldka vbxifs jhbw fiu uepgbq