在SQL语句中使用IF或CASE with multiple条件的作用是根据不同的条件执行不同的操作或返回不同的结果。这些条件可以是基于列的值、函数的结果、逻辑表达式等。 使用IF语句可以根据条件执行不同的操作。IF语句的基本语法如下: 代码语言:txt 复制 IF condition THEN statement1; ELSE statement2; END IF; 其中,conditio...
你可以使用string_split为了达到这个目的。
SQL CASE statement with multiple conditions In case you need the result to satisfy multiple conditions, you can add those conditions to the T-SQL CASE statement and combine them with the AND operator: CASE expression WHEN condition1 AND condition2 THEN result1 ELSE result2 END ...
In SQL, we can use a set of nested CASE WHEN statements in SQL to evaluate the multiple conditions and return a different result based on the defined conditions. We can define the syntax of a nested CASE WHEN statement as shown in the following: SELECT CASE WHEN condition1 THEN result1 W...
In the tipSQL Server CASE Expression Overview, Aaron has written a section about data type precedence in the CASE expression. Nesting CASE Expressions With the searched CASE expression, we can have multiple WHEN conditions: SELECT [BusinessEntityID],[JobTitle],[HireDate],Seniority=CASE WHENDATEDIFF...
case when in sql server's stored procedure https://docs.microsoft.com/en-us/sql/t-sql/language-elements/case-transact-sql Evaluates a list of conditions and returns one of multiple possible result expressions. The CASE expression hastwo formats:...
使用in与substr():
In a simple case statement, it evaluates conditions one by one. Once the condition and expression are matched, it returns the expression mentioned in THEN clause. We have following syntax for a case statement in SQL with a simple expression 1 2 3 4 5 6 SELECT CASE Expression When ...
SQL中的CASE WHEN使用 Case具有两种格式。简单Case函数和Case搜索函数。 –简单Case函数 CASE sex WHEN ...
WITH Data (value) AS ( SELECT 0 UNION ALL SELECT 1 ) SELECT CASE WHEN MIN(value) <= 0 THEN 0 WHEN MAX(1/value) >= 100 THEN 1 END FROM Data ; You should only depend on order of evaluation of the WHEN conditions for scalar expressions (including non-correlated sub-queries that retu...