DateTime.MinValue : uld.ATime 以上LINQ语句转换成SQL语句如下: CASEWHEN(uld.ATIMEISNULL)THENGETDATE()ELSEuld.ADTIMEENDASATIME, 例子二: IsDisabled=ul.IsDisabled||l.IsDisabled 以上LINQ语句转换成SQL语句如下: CASEWHEN([ul].[IsDisabled]=1OR[l].[IsDisabled]=1)THENcast(1asbit)WHEN(NOT([ul].[...
CASE With ELSE ACASEstatement can have an optionalELSEclause. TheELSEclause is executed if none of the conditions in theCASEstatement is matched. Syntax SELECTcustomer_id, first_name,CASEWHENcondition1THENresult1WHENcondition2THENresult2-- Add more WHEN conditions and results as neededELSEelse_resu...
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...
Simple Case Statement CASE [input_expression] WHEN when_expression THEN when_true_result_expression [...n] [ELSE else_result_expression] END Search Case Statement CASE WHEN Boolean_expression THEN when_true_result_expression [...n] [ELSE else_result_expression] END ...
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 expression1 Then Result1 When expression2 Then Result2 ... ELSE ...
The SQL CASE Expression TheCASEexpression goes through conditions and returns a value when the first condition is met (like an if-then-else statement). So, once a condition is true, it will stop reading and return the result. If no conditions are true, it returns the value in theELSE...
CASE 语句在指定的搜索条件为 true 时执行一条或多条语句。 CASE 是独立的语句,它与必须作为表达式组成部分出现的 CASE 表达式不同。 CASE 语句有两种形式:简单 CASE 语句和搜索型 CASE 语句。 简单CASE 语句 (PL/SQL) 简单CASE 语句尝试将表达式 (称为选择器) 与一个或多个 WHEN 子句中指定的另一个表达式...
This SQL Server tutorial explains how to use the SQL Server (Transact-SQL) CASE statement with syntax and examples. In SQL Server (Transact-SQL), the CASE statement has the functionality of an IF-THEN-ELSE statement. You can use the CASE statement within
if/then else case statement query in SQL ServerThis creates start and end columns by doing a ...
SQL USEAdventureWorks2022; GOSELECTProductNumber,Category=CASEProductLineWHEN'R'THEN'Road'WHEN'M'THEN'Mountain'WHEN'T'THEN'Touring'WHEN'S'THEN'Other sale items'ELSE'Not for sale'END,NameFROMProduction.ProductORDERBYProductNumber; GO B. Use a SELECT statement with a searched CASE expression ...