t_sequence(那麼如何調用呢。
id int,
seed int,
primary key (id)
);
f_seqnext()
returns int
declare oi int;
t_sequence seed = seed + ;
seed oi t_sequence;
oi;
;
f_seqlast()
returns int
declare oi int;
seed oi t_sequence limit ;
oi;
;
f_seqreset()
returns int
t_sequence seed = ;
;
;
比如我們要給某個表的每一行,在某個列上面編號,1,2,3,4,5...
update t_goods set m_id = f_seqnext()
通過調用 f_seqreset() 來降這個sequence歸零