selectcase age when 20 then salary*1. 2 when 30 then salary*1.3 else salary*1.4 endfrom ds.emp; 搜索格式: select case when age >= 20 && age < 30 then salary * 1.1 when age >= 30 then salary * 1.2 else salary end from stu; case statement搜索格式: when @a >= 80 && @a <=...
I have a stored procedure that uses case statement. Each When clause has an update statement. I am trying to call this stored procedure multiple times and based on the pass parameter, I run an update statement. Unfortunately, the update statement does not execute correctly. There are no chang...
同样也有CASE语句,但是它没有像其他语言中预期的那种流控制级的能力。 12.5.1 IF...ELSE语句 IF...ELSE语句的实现方式和C是接近相同的。基本的语法如下: IF <Boolean Expression> <SQL statement> | BEGIN END [ELSE <SQL statement> | BEGIN END] 其中的表达式可以是取布尔值的任意表达式。 提示: 不恰...
在PostgreSQL 中,除了标准 SQL 语句之外还支持使用各种过程语言(例如 PL/pgSQL、C、PL/Tcl、PL/Python、PL/Perl、PL/Java 等 )创建复杂的过程和函数,称为存储过程(Stored Procedure)和自定义函数(User-Defined Function)。存储过程支持许多过程元素,例如控制结构、循环和复杂的计算。 使用存储过程带来的好处包括: ...
The searched CASE expression evaluates a set of Boolean expressions to determine the result. Both formats support anoptional ELSEargument. CASE can be used in any statement or clause that allows a valid expression. For example, you can use CASE in statements such as SELECT, UPDATE, DELETE and...
Below is the example of creating a global temporary procedure. 1 2 3 4 5 CREATEPROCEDURE##TEMP AS BEGIN PRINT'Global temp procedure' END Modifying the stored procedure Use theALTER PROCEDUREstatement to modify the existing stored procedure. Following is the example of modifying the existing proced...
EXECUTE<ProcedureName> N'<Parameter 1 value>, N'<Parameter xvalue>; GO For example, the following Transact-SQL statement executes theuspGetCustomerCompanystored procedure and withCannonas the@LastNameparameter value andChrisas the@FirstNameparameter value: ...
create view from stored procedure Create view with NOLOCK CREATE VIEW WITH PRIMARY KEY CREATE/ALTER PROCEDURE' must be the first statement in a query batch. Create/Alter view with declare variable Created a new column in a select statement .How to use that column name in CASE statement in ...
CASE expressions are supported in natively compiled T-SQL modules. The following example demonstrates a way to use the CASE expression in a query. Copy -- Query using a CASE expression in a natively compiled stored procedure. CREATE PROCEDURE dbo.usp_SOHOnline...
I have a stored procedure that uses case statement. Each When clause has an update statement. I am trying to call this stored procedure multiple times and based on the pass parameter, I run an update statement. Unfortunately, the update statement does not execute correctly. There are no chang...