From 84891dbd687d85eec498e653d254907dd2a20855 Mon Sep 17 00:00:00 2001
From: Suomm <1474983351@qq.com>
Date: Tue, 12 Mar 2024 19:22:46 +0800
Subject: [PATCH] =?UTF-8?q?doc:=20=E4=BF=AE=E6=94=B9=20Join=20=E8=87=AA?=
 =?UTF-8?q?=E5=B7=B1=E6=96=87=E6=A1=A3=E3=80=82?=
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---
 docs/zh/base/querywrapper.md | 45 +++++++++++++++++++++---------------
 1 file changed, 27 insertions(+), 18 deletions(-)

diff --git a/docs/zh/base/querywrapper.md b/docs/zh/base/querywrapper.md
index f9a51daa..92584add 100644
--- a/docs/zh/base/querywrapper.md
+++ b/docs/zh/base/querywrapper.md
@@ -866,34 +866,43 @@ WHERE tb_account.age >=  ?
 ## join 自己
 
 ```java
-QueryWrapper queryWrapper = QueryWrapper.create();
-queryWrapper.from(ACCOUNT)
-    .leftJoin(ACCOUNT).as("a1").on(ACCOUNT.ID.eq(ACCOUNT.PARENT_ID))
-    .leftJoin(ACCOUNT).as("a2").on(ACCOUNT.ID.eq(ACCOUNT.PARENT_ID))
-    .where(ACCOUNT.ID.ge(1));
+AccountTableDef a1 = ACCOUNT.as("a1");
+AccountTableDef a2 = ACCOUNT.as("a2");
+ArticleTableDef ar = ARTICLE.as("ar");
+
+QueryWrapper queryWrapper = new QueryWrapper()
+    .select(ar.CONTENT, a1.ID, a2.AGE)
+    .from(ar)
+    .leftJoin(a1).on(a1.ID.eq(ar.ACCOUNT_ID))
+    .leftJoin(a2).on(a2.ID.eq(ar.ACCOUNT_ID));
 ```
 
 其查询生成的 Sql 如下：
 
 ```sql
-SELECT * FROM `tb_account`
-    LEFT JOIN `tb_account` AS `a1`
-        ON `a1`.`id` = `tb_account`.`parent_id`
-    LEFT JOIN `tb_account` AS `a2`
-        ON `a2`.`id` = `tb_account`.`parent_id`
-WHERE `tb_account`.`id` >= ?
+SELECT
+    ` ar `.` content `,
+    ` a1 `.` id `,
+    ` a2 `.` age `
+FROM
+    ` tb_article ` AS ` ar `
+    LEFT JOIN ` tb_account ` AS ` a1 ` ON ` a1 `.` id ` = ` ar `.` account_id `
+    LEFT JOIN ` tb_account ` AS ` a2 ` ON ` a2 `.` id ` = ` ar `.` account_id `
 ```
 
 若 `tb_account` 表带有逻辑删除，那么其生成的 SQL 如下：
 
 ```sql
-SELECT * FROM `tb_account`
-    LEFT JOIN `tb_account` AS `a1`
-        ON `a1`.`id` = `tb_account`.`parent_id` AND `a1`.`is_delete` = ?
-    LEFT JOIN `tb_account` AS `a2`
-        ON `a2`.`id` = `tb_account`.`parent_id` AND `a2`.`is_delete` = ?
-WHERE `tb_account`.`id` >= ?
-  AND `tb_account`.`is_delete` = ?
+SELECT
+    ` ar `.` content `,
+    ` a1 `.` id `,
+    ` a2 `.` age `
+FROM
+    ` tb_article ` AS ` ar `
+    LEFT JOIN ` tb_account ` AS ` a1 ` ON (` a1 `.` id ` = ` ar `.` account_id `)
+    AND ` a1 `.` is_delete ` = 0
+    LEFT JOIN ` tb_account ` AS ` a2 ` ON (` a2 `.` id ` = ` ar `.` account_id `)
+    AND ` a2 `.` is_delete ` = 0
 ```
 
 > 关于逻辑删除更多文档请参考 [这里](../core/logic-delete.html)。