mybatis 寫法技巧

1.trim prefix prefixoverrides suffix suffixoverrides

---通常用法---

例子1-1（以字元「where」覆蓋首個「and」或"or」字元）：

select * from user
id=#
and deleteflag=0;

select * from user

id=#
and deleteflag=0;

//deleteflag前的"and"被去掉

select * from user where deleteflag=0;

update user
name = #,
password = #,
id = #
and deleteflag = 0;

update user

name = #,
password = #,
id = #
and deleteflag = 0;

//password後的","被去掉

update user set name = #,password = # where id = # and deleteflag = 0;

2.foreach

select *

from post p
where id in
#

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