A stored procedure and function in PL/SQL both can be defined as a way or method in which SQL and PL/SQL statements are logically written and executed to perform a specific task. In this tutorial we will learn how to define them with examples.
procedure:存储过程 eg: create or replace procedure p --这儿是和plsql的区别 is cursor c is select * from emp2 for update; --v_temp c%rowtype; begin for v_temp in c loop if(v_temp.sal< 2000) then update emp2 set sal=sal*2 where current of c ; elsif(v_temp.sal = 5000) the...
2.使用SHOWSTATUS语句查看存储过程和函数的状态信息SHOWPROCEDURESTATUS;SHOWPROCEDURESTATUSLIKE'show_max_salary';SHOWFUNCTIONSTATUSLIKE'email_by_id';#方式 3.从information_schema.Routines表中查看存储过程和函数的信息SELECT*FROMinformation_schema.RoutinesWHEREROUTINE_NAME='email_by_id'ANDROUTINE_TYPE='FUNCTION'...
今天简单总结一下SQL中PROCEDUR,TRIGGER,FUNCTION的简单应用。 一.简单PROCEDURE 1.不带参数 create proc PROC_Test as select 字段名 from 表名 2.带输入,输出参数 create proc PROC_TESTParamer @ID varchar(16), @username varchar(20) output as select @username = USERNAME FROM 表名 where ID = @ID ...
TheUpdateGPAstored procedure updates a student’s GPA in theStudenttable based on their ID and the new GPA provided. It then confirms the update with a message. Before using the stored procedure we created, let’s check the nature of the Student table: ...
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create procedure 存储过程名称() begin <SQL 语句>;end; 注:begin……end 用于表示 SQL 语句的开始和结束。语法里的 SQL 语句就是重复使用的 SQL 语句。例如:查出 ”学生表“ 里的学生姓名。 select 姓名 from student; 把以上 SQL 语句放入存储过程的语法里,并给这个存储过程命名 a_student1 create procedur...
ANSI_WARNINGS isn't honored when you pass parameters in a stored procedure, user-defined function, or when you declare and set variables in a batch statement. For example, if a variable is defined as char(3), and then set to a value larger than three characters, the data is truncated ...
SQLGetFunctionsalways returns thatSQLGetFunctions,SQLDataSources, andSQLDriversare supported. It does this because these functions are implemented in the Driver Manager. The Driver Manager will map an ANSI function to the corresponding Unicode function if the Unicode function exists and will map a Unic...
SQLProcedureColumns returns the results as a standard result set, ordered by PROCEDURE_CAT, PROCEDURE_SCHEM, PROCEDURE_NAME, and COLUMN_TYPE. Column names are returned for each procedure in the following order: the name of the return value, the names of each parameter in the procedure invocation...