Using a SELECT statement with a simple CASE expression 在SELECT 语句中,CASE 简单表达式只能用于等同性检查,而不进行其他比较。 下面的示例使用 CASE 表达式更改产品系列类别的显示,以使这些类别更易于理解。 USE AdventureWorks2012; GO SELECT ProductNumber, Category = CASE ProductLine WHEN 'R' THEN 'Road' ...
The CASE expression cannot be used to control the flow of execution of Transact-SQL statements, statement blocks, user-defined functions, and stored procedures. For a list of control-of-flow methods, seeControl-of-Flow Language (Transact-SQL). Examples A. Using a SELECT statement with a simpl...
sql case statement
The Transact-SQL CASE expression allows you to place conditional logic in your TSQL code. This conditional logic provides you with a way to place different code blocks in your TSQL statements which can be executed depending on a TRUE or FALSE evaluation of the conditional logic. You can place ...
SQL语句大全中的sql语句备忘录—sql日常使用指北 ,类似select 中的case。...RecID 是自增长字段, 写一个SQL语句, 找出表的第31到第40个记录。 ...Transact-SQL 语句影响的行数的信息。...SET NOCOUNT 为 ON 时,不返回计数(表示受 Transact-SQL 语句影响的行数)。...转载本站文章《SQL语句大全中的sql语...
SQL CASE The SQLCASEstatement evaluates a list of conditions and adds a column with values based on the condition. For example, -- add a new column 'order_volume' in the Orders table-- and flag any order greater than 10000 as 'Large Order'-- and smaller than 10000 as 'Small Order'...
The simple CASE statement has the following structure: CASE selector WHEN selector_value_1 THEN statements_1 WHEN selector_value_1 THEN statement_2 ... ELSE else_statements END CASE; Code language: PostgreSQL SQL dialect and PL/pgSQL (pgsql) Let’s examine the syntax of the simple CASE ...
Posted Procedure : CASE statement using SQL 4235 Tarun Bajaj September 04, 2012 02:28PM Re: Procedure : CASE statement using SQL 1269 Rick James September 05, 2012 09:16PM Sorry, you can't reply to this topic. It has been closed....
SQL Server Reporting Services, Power View Index .5in is not a valid unit designator. Valid unit designators are in, mm, cm, pt, pc. 'No such host is known' error when configuring Reporting database 'Oracle' data extension not registered 'Return' statement in a Function,Get,or Operator ...
Posted Procedure : CASE statement using SQL 4231 Tarun Bajaj September 04, 2012 02:28PM Re: Procedure : CASE statement using SQL 1269 Rick James September 05, 2012 09:16PM Sorry, you can't reply to this topic. It has been closed....