mirror of
https://gitee.com/best_handsome/mybatis-plus-join
synced 2025-07-11 00:02:22 +08:00
1.1.6
This commit is contained in:
parent
87fc43c945
commit
b05477c155
15
README.md
15
README.md
@ -4,7 +4,7 @@
|
||||
|
||||
* [演示示例](https://gitee.com/best_handsome/mybatis-plus-join-demo)
|
||||
|
||||
QQ群:1022221898
|
||||
QQ群:1022221898
|
||||
|
||||
## 使用方法
|
||||
|
||||
@ -116,7 +116,7 @@ class test {
|
||||
|
||||
void testJoin() {
|
||||
IPage<UserDTO> iPage = userMapper.selectJoinPage(new Page<>(2, 10), UserDTO.class,
|
||||
Wrappers.<UserDO>lambdaJoin()
|
||||
new MPJLambdaWrapper<UserDO>()
|
||||
.selectAll(UserDO.class)
|
||||
.select(UserAddressDO::getTel)
|
||||
.selectAs(UserAddressDO::getAddress, UserDTO::getUserAddress)
|
||||
@ -157,7 +157,7 @@ class test {
|
||||
|
||||
void testJoin() {
|
||||
List<UserDTO> list = userMapper.selectJoinList(UserDTO.class,
|
||||
Wrappers.<UserDO>queryJoin()
|
||||
new MPJLambdaWrapper<UserDO>()
|
||||
.selectAll(UserDO.class)
|
||||
.select("addr.tel", "addr.address", "a.province")
|
||||
.leftJoin("user_address addr on t.id = addr.user_id")
|
||||
@ -197,16 +197,17 @@ WHERE (
|
||||
* leftJoin() rightJoin() innerJoin() 传sql片段 格式 (表 + 别名 + 关联条件)
|
||||
* 条件查询,可以查询主表以及参与连接的所有表的字段,全部调用mp原生的方法,正常使用没有sql注入风险
|
||||
|
||||
### 分页查询
|
||||
#### 分页查询
|
||||
|
||||
```java
|
||||
|
||||
class test {
|
||||
@Resource
|
||||
private UserMapper userMapper;
|
||||
|
||||
void testJoin() {
|
||||
IPage<UserDTO> page = userMapper.selectJoinPage(new Page<>(1, 10), UserDTO.class,
|
||||
Wrappers.<UserDO>queryJoin()
|
||||
new MPJQueryWrapper<UserDO>()
|
||||
.selectAll(UserDO.class)
|
||||
.select("addr.tel", "addr.address")
|
||||
.select("a.province")
|
||||
@ -234,7 +235,7 @@ FROM
|
||||
LIMIT ?,?
|
||||
```
|
||||
|
||||
### 还可以这么操作,但不建议
|
||||
#### 还可以这么操作,但不建议
|
||||
|
||||
```java
|
||||
class test {
|
||||
@ -243,7 +244,7 @@ class test {
|
||||
|
||||
void testJoin() {
|
||||
List<UserDTO> list = userMapper.selectJoinList(UserDTO.class,
|
||||
Wrappers.<UserDO>queryJoin()
|
||||
new MPJQueryWrapper<UserDO>()
|
||||
.selectAll(UserDO.class)
|
||||
.select("addr.tel", "addr.address")
|
||||
//行列转换
|
||||
|
Loading…
x
Reference in New Issue
Block a user