sql-server - 如何验证插入和删除和更新是在 Ms Sql 服务器的单个存储过程中完成的

Question

我正在尝试编写存储过程测试用例以进行功能检查。我需要检查更新操作是否完成了插入和/或删除操作。我尝试使用BINARY_CHECKSUM(*)进行更新，但我如何知道通过结果集进行更新操作的行数是插入还是删除表。

我只是在使用 MS SQL Server 2005

感谢您。

Answer 1

引用：

我遵循的是将数据插入到 temp 中。表和实际表然后对其中一个执行操作并...检查过程的功能。

如果您的最终问题可以描述为比较两个表中的实际数据和预期数据，那么您可以尝试下一种方法 - 比较 usingexcept子句：

create table [tb_source] (id int primary key identity(1,1), value varchar(50));
create table [tb_dest] (id int primary key, value varchar(50));


insert into [tb_source] (value) values ('a');
insert into [tb_source] (value) values ('b');
insert into [tb_source] (value) values ('c');

-- tables are equal
insert into [tb_dest] select * from [tb_source];

-- one row inserted
insert [tb_dest] (id, value) values (4, 'd');

-- one row deleted
delete from [tb_dest] where id = 1;

-- one row updated
update [tb_dest] set value = 'b_' where id = 2;

 -- answering the question "how many number of rows with update operation through result"
with [raw] as (
    (select *, 'deleted' [operation] from [tb_source]
    except 
    select *, 'deleted' from [tb_dest])
    union all
    (select *, 'inserted' from [tb_dest]
    except 
    select *, 'inserted' from [tb_source])),

[updates] as (
    select id
    from [raw]
    group by id
    having count(*) > 1),

[results] as (
    select * from [raw] where id not in (select id from [updates])
    union all
    select id, value, 'updated' from [raw] where id in (select id from [updates]))

select [operation], count(distinct id)
from [results]
group by [operation]
order by count(*) desc

结果：

operation   count
---------------------------------
updated         1
deleted         1
inserted        1

Answer 2

如果不久之后：

• 只删除 - 删除
• 只插入 - 插入
• 插入和删除 - 更新

作为一个选项，您可以尝试使用触发器来找出操作的类型：

ALTER TRIGGER [dbo].[MyTrigger]
   ON  [dbo].[MyTable]
   AFTER INSERT, UPDATE, DELETE
AS 
BEGIN
    SET NOCOUNT ON;

    declare
        @i int = (select count(*) from (select top (1) * from inserted) as i),
        @d int = (select count(*) from (select top (1) * from deleted) as d),
        @type varchar(20);

    if @i = 1 and @d = 1 set @type = 'update'
        else if @i = 1 and @d = 0 set @type = 'insert'
            else if @i = 0 and @d = 1 set @type = 'delete'
                else set @type = 'empty'; 


    if @type = 'insert'
    begin
        -- YOUR CODE HERE
    end

    if @type = 'delete'
    begin
        -- YOUR CODE HERE
    end

    if @type = 'update'
    begin
        -- YOUR CODE HERE
    end

    if @type = 'empty'
    begin
        -- YOUR CODE HERE
    end


END