在SQL Server中,IF条件语句也可以用于判断字符串值。 语法如下: IFcondition { sql_statement1;}[ELSE{ sql_statement2;}] 1. 2. 3. 4. 其中,condition是一个表达式,可以是任意类型的条件判断。sql_statement 1和sql_statement 2是两个可选的SQL语句块。当condition为真时,执行sql_statement 1;当condition为...
It executes the ELSE statement and prints the message for it. In this case, we have two SQL IF statements. The second IF statement evaluates to false, therefore, it executes corresponding ELSE statement 它执行ELSE语句并为其打印消息。 在这种情况下,我们有两个SQL IF语句。 第二条IF语句的计算结...
在SQL Server中,可以使用IF...ELSE IF 语句来根据条件执行不同的操作。IF...ELSE IF 语句的语法如下: IFconditionstatement(s)ELSEIFconditionstatement(s)ELSEIFconditionstatement(s)...ELSEstatement(s)ENDIF; 其中,condition 是一个逻辑表达式,用于判断条件是否为真。如果 condition 为真,则执行相应的 statement...
AlterRemoteServiceBindingStatement AlterResourceGovernorCommandType AlterResourceGovernorStatement AlterResourcePoolStatement AlterRoleAction AlterRoleStatement AlterRouteStatement AlterSchemaStatement AlterSearchPropertyListStatement AlterSecurityPolicyStatement AlterSequenceStatement AlterServerAuditSpecificationStatement AlterSe...
packagecn.juwatech.sql.example;importjava.sql.*;publicclassSQLIfStatementExample{publicstaticvoidmain(String[] args){Stringurl="jdbc:mysql://localhost:3306/mydatabase";Stringuser="username";Stringpassword="password";try(Connectionconn=DriverManager.getConnection(url, user, password);CallableStatementstmt...
SQl Server——流程控制语句 IF...ELSE语句:条件处理语句 IF Boolean_expression {sql_statement|statement_block} ELSE {sql_statement|statement_block} 需求:查询成绩表sc编号为801,学科为01这门课程所有学生的平均分,以此来对学生表现进行评价 AI检测代码解析...
어셈블리: Microsoft.SqlServer.TransactSql.ScriptDom(Microsoft.SqlServer.TransactSql.ScriptDom.dll) 구문C# 복사 [SerializableAttribute] public class IfStatement : TSqlStatement IfStatement 유형에서 다음 멤버를 표시합니다....
IfStatement 类型公开以下成员。 属性 展开表 名称说明 ElseStatement Gets the statement that will be executed if the predicate evaluates false. Optional, may be nullnull 引用(在 Visual Basic 中为 Nothing). FirstTokenIndex Gets or sets the first token index. (从 TSqlFragment 继承。) FragmentLeng...
(cust_id,order_amt)SELECT TOP 1 — important since we’re not constraining any recordscust_id = @cust_id,order_amt = @order_amtFROM customer_totals ctWHERE NOT EXISTS — this replaces the if statement(SELECT 1FROM customer_totalsWHERE cust_id = @cust_id)SET @rowcount = @@ROWCOUNT —...
Syntax12--===13IfBoolean_expression14{sql_statement|statement_block}15[Else16{sql_statement|statement_block}]17--Remark:该语法解释为:当Boolean_expression为真时,执行If语句块里的语句,否则执行Else语句块里的语句。1819go20--===21--3,Example22--Desc:查看产品表中名称为“Gorgonzola Telino”的商品...