存储过程
一般分为十种情况,每种语法各不相同:
1、 创建语法
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create proc | procedure pro_name
[{@参数数据类型} [=默认值] [ output ],
{@参数数据类型} [=默认值] [ output ],
....
]
as SQL_statements
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2、 创建不带参数存储过程
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--创建存储过程 if (exists ( select * from sys.objects where name = 'proc_get_student' ))
drop proc proc_get_student
go create proc proc_get_student
as select * from student;
--调用、执行存储过程 exec proc_get_student;
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3、 修改存储过程
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--修改存储过程 alter proc proc_get_student
as select * from student;
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4、 带参存储过程
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--带参存储过程 if (object_id( 'proc_find_stu' , 'P' ) is not null )
drop proc proc_find_stu
go create proc proc_find_stu(@startId int , @endId int )
as select * from student where id between @startId and @endId
go exec proc_find_stu 2, 4;
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5、 带通配符参数存储过程
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--带通配符参数存储过程 if (object_id( 'proc_findStudentByName' , 'P' ) is not null )
drop proc proc_findStudentByName
go create proc proc_findStudentByName(@ name varchar (20) = '%j%' , @nextName varchar (20) = '%' )
as select * from student where name like @ name and name like @nextName;
go exec proc_findStudentByName;
exec proc_findStudentByName '%o%' , 't%' ;
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6、 带输出参数存储过程
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if (object_id( 'proc_getStudentRecord' , 'P' ) is not null )
drop proc proc_getStudentRecord
go create proc proc_getStudentRecord(
@id int , --默认输入参数
@ name varchar (20) out , --输出参数
@age varchar (20) output --输入输出参数
) as select @ name = name , @age = age from student where id = @id and sex = @age;
go -- declare @id int ,
@ name varchar (20),
@ temp varchar (20);
set @id = 7;
set @ temp = 1;
exec proc_getStudentRecord @id, @ name out , @ temp output ;
select @ name , @ temp ;
print @ name + '#' + @ temp ;
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7、 不缓存存储过程
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--WITH RECOMPILE 不缓存 if (object_id( 'proc_temp' , 'P' ) is not null )
drop proc proc_temp
go create proc proc_temp
with recompile
as select * from student;
go exec proc_temp;
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8、 加密存储过程
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--加密WITH ENCRYPTION if (object_id( 'proc_temp_encryption' , 'P' ) is not null )
drop proc proc_temp_encryption
go create proc proc_temp_encryption
with encryption
as select * from student;
go exec proc_temp_encryption;
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9、 带游标参数存储过程
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if (object_id( 'proc_cursor' , 'P' ) is not null )
drop proc proc_cursor
go create proc proc_cursor
@cur cursor varying output
as set @cur = cursor forward_only static for
select id, name , age from student;
open @cur;
go --调用 declare @exec_cur cursor ;
declare @id int ,
@ name varchar (20),
@age int ;
exec proc_cursor @cur = @exec_cur output ; --调用存储过程
fetch next from @exec_cur into @id, @ name , @age;
while (@@fetch_status = 0) begin fetch next from @exec_cur into @id, @ name , @age;
print 'id: ' + convert ( varchar , @id) + ', name: ' + @ name + ', age: ' + convert ( char , @age);
end close @exec_cur;
deallocate @exec_cur; --删除游标
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10、 分页存储过程
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---存储过程、row_number完成分页 if (object_id( 'pro_page' , 'P' ) is not null )
drop proc proc_cursor
go create proc pro_page
@startIndex int ,
@endIndex int
as select count (*) from product
; select * from (
select row_number() over( order by pid) as rowId, * from product
) temp
where temp .rowId between @startIndex and @endIndex
go --drop proc pro_page exec pro_page 1, 4
-- --分页存储过程 if (object_id( 'pro_page' , 'P' ) is not null )
drop proc pro_stu
go create procedure pro_stu(
@pageIndex int ,
@pageSize int
) as declare @startRow int , @endRow int
set @startRow = (@pageIndex - 1) * @pageSize +1
set @endRow = @startRow + @pageSize -1
select * from (
select *, row_number() over ( order by id asc ) as number from student
) t
where t.number between @startRow and @endRow;
exec pro_stu 2, 2;
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