如何用sql语句修改数据表中字段，实现identity(100,1)

create table common_info(

name varchar(10),

value int)

insert into common_info values('msg_count', 100)

你的SQL（SQL Server培训 mySQL培训 ）应该这么写(用存储过程):

create proc p_ins_alm_msg

@msg_count int out

as

select @msg_count = value from common_info where name = 'msg_count'

update common_info set value = @msg_count+ 1 where name = 'msg_count' and value =

@msg_count

if @@rowcount = 0

return -1000

insert into table1 (field0)

values(@msg_count)

return 0

go