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; ...
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 the T-SQL scripting language, you can use the SQL CASE statement to evaluate a condition and return one or more result expressions. This SQL Tutorial will teach you when and how you can use CASE in T-SQL statements. Solution TheCASE expressionis used to build IF … THEN … ELSE stat...
At a high-level, the syntax for a SQL CASE statement is shown below. Here, we specified multiple conditions. SQL Server evaluates the conditions sequentially. Once a condition evaluates successfully, it stops the evaluation of remaining conditions. If none of the conditions are satisfied, we can...
I would appreciate it a lot if anyone can see what im doing wrong in below statement! CASE WHEN [@field:Agree]="NO" AND [@field:Term]="Disc1" THEN SELECT Price FROM Products WHERE Model=target.[@field:Model] AND Color=target.[@field:Color] WHEN [@field:Agree]="YES" AND ...
In this format, we evaluate one expression against multiple values. 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 ...
SQL: CASE Statement 1.CASE 写法如下: CASEWHENcondition1THENresult1WHENcondition2THENresult2WHENconditionNTHENresultNELSEresultEND; 解释:1)先匹配第一条,不匹配的话继续第二条,如此循环,只要找到匹配的就终止。如果都没有匹配的,就返回 ELSE里的语句,...
For a list of control-of-flow methods, see Control-of-Flow Language (Transact-SQL). The CASE statement evaluates its conditions sequentially and stops with the first condition whose condition is satisfied. In some situations, an expression is evaluated before a CASE statement receives the results...
Source: SqlExpressionFactory.cs Creates a new CaseExpression which represent a CASE statement in a SQL tree. C# 複製 public virtual Microsoft.EntityFrameworkCore.Query.SqlExpressions.SqlExpression Case (System.Collections.Generic.IReadOnlyList<Microsoft.EntityFrameworkCore.Query.SqlExpressions.CaseWhenCl...
The CASE statement comes in two flavors: the first evaluates one or more conditions and returns the result for the first condition that is true. If no condition is true, the result after ELSE is returned, or NULL if there is no ELSE part: ...