解题# Write your MySQL query statement below select date_format(trans_date, '%Y-%m') month, country...trans_total_amount, sum(if(state='approved', amount, 0)) approved_total_amount from Transactions group by date_
Second, IF statement condition is FALSE, it does not print the message inside IF statement block 其次,IF语句条件为FALSE,它不会在IF语句块内打印消息 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 t...
IF...THEN...ELSIF...ELSE statements provide the means for checking many alternatives in one statement. Formally, this statement is equivalent to nested IF...THEN...ELSE...IF...THEN statements, but only one END IF is needed. The following example uses an IF...THEN...ELSIF...ELSE stat...
The IF ELSE statement controls the flow of execution in SQL Server. It can be used in stored-procedures, functions, triggers, etc. to execute the SQL statements based on the specified conditions. Syntax: Copy IF Boolean_expression { sql_statement | statement_block } [ ELSE { sql_statement...
2) PL/pgSQL if-then-else statement The if...then...else statement executes the statements in the if branch if the condition evaluates to true; otherwise, it executes the statements in the else branch. Here’s the syntax of the if...then...else statement: if condition then statements;...
This SQL Server tutorial explains how to use the IF...ELSE statement in SQL Server (Transact-SQL) with syntax and examples. In SQL Server, the IF...ELSE statement is used to execute code when a condition is TRUE, or execute different code if the conditio
SQL 过程中的 IF 语句 可使用 IF 语句来根据条件满足状态而有条件进入某个逻辑。IF 语句在逻辑上等价于带有搜索式 CASE 语句 WHEN 子句的 CASE 语句。 IF 语句支持使用可选 ELSE IF 子句和缺省 ELSE 子句。END IF 子句是指示语句结尾所必需的。 以下是包含 IF 语句的过程的示例:...
Working of if-else Statement in C Let’s explore how the “if-else” statement works in C: if-else Syntax in C: The basic syntax of the “if-else” statement is as follows: if (condition) { // Code block executed if the condition is true } else { // Code block executed if the...
The expression that is the predicate for the if statement. This should be a boolean expression. C# 复制 public Microsoft.SqlServer.TransactSql.ScriptDom.BooleanExpression Predicate { get; set; } Property Value BooleanExpression Applies to 产品版本 Microsoft.SQLServer.DacFx 140.3881.1, 150.18208....
Microsoft Fabric SQL 数据库 指定Transact-SQL 语句的执行条件。 如果boolean_expression的计算结果为TRUE,则执行boolean_expression后面的Transact-SQL 语句(sql_statement)。 可选ELSE关键字是boolean_expression计算结果FALSE为或NULL时执行的备用 Transact-SQL 语句。