doc: update docs

This commit is contained in:
开源海哥 2023-08-02 19:49:59 +08:00
parent 18b9dece60
commit 63a376ab5e
2 changed files with 47 additions and 47 deletions

View File

@ -78,7 +78,7 @@ QueryWrapper query = QueryWrapper.create()
.and(ACCOUNT.USER_NAME.like("zhang").or(ACCOUNT.USER_NAME.like("li")));
// execute SQL
// ELECT * FROM tb_account
// SELECT * FROM tb_account
// WHERE tb_account.id >= 100
// AND (tb_account.user_name LIKE '%zhang%' OR tb_account.user_name LIKE '%li%' )
List<Account> accounts = mapper.selectListByQuery(query);
@ -96,7 +96,7 @@ QueryWrapper query = QueryWrapper.create()
.orderBy(ACCOUNT.ID.desc());
// execute SQL
// ELECT * FROM tb_account
// SELECT * FROM tb_account
// WHERE tb_account.id >= 100
// AND (tb_account.user_name LIKE '%zhang%' OR tb_account.user_name LIKE '%li%' )
// ORDER BY tb_account.id DESC
@ -112,7 +112,7 @@ Page<Account> accountPage = mapper.paginate(5, 10, query);
QueryWrapper query=new QueryWrapper();
query.select().from(ACCOUNT)
// SQL:
// SQL:
// SELECT * FROM tb_account
```
@ -122,8 +122,8 @@ query.select().from(ACCOUNT)
QueryWrapper query=new QueryWrapper();
query.select(ACCOUNT.ID,ACCOUNT.USER_NAME).from(ACCOUNT)
// SQL:
// SELECT tb_account.id, tb_account.user_name
// SQL:
// SELECT tb_account.id, tb_account.user_name
// FROM tb_account
```
@ -137,9 +137,9 @@ QueryWrapper query = new QueryWrapper()
.from(ACCOUNT.as("a"), ARTICLE.as("b"))
.where(ACCOUNT.ID.eq(ARTICLE.ACCOUNT_ID));
// SQL:
// SELECT a.id, a.user_name, b.id AS articleId, b.title
// FROM tb_account AS a, tb_article AS b
// SQL:
// SELECT a.id, a.user_name, b.id AS articleId, b.title
// FROM tb_account AS a, tb_article AS b
// WHERE a.id = b.account_id
```
@ -154,10 +154,10 @@ QueryWrapper query = new QueryWrapper()
avg(ACCOUNT.SEX).as("sex_avg")
).from(ACCOUNT);
// SQL:
// SELECT tb_account.id, tb_account.user_name,
// MAX(tb_account.birthday),
// AVG(tb_account.sex) AS sex_avg
// SQL:
// SELECT tb_account.id, tb_account.user_name,
// MAX(tb_account.birthday),
// AVG(tb_account.sex) AS sex_avg
// FROM tb_account
```
@ -170,10 +170,10 @@ QueryWrapper queryWrapper=QueryWrapper.create()
.where(ACCOUNT.ID.ge(100))
.and(ACCOUNT.USER_NAME.like("michael"));
// SQL:
// SELECT * FROM tb_account
// WHERE tb_account.id >= ?
// AND tb_account.user_name LIKE ?
// SQL:
// SELECT * FROM tb_account
// WHERE tb_account.id >= ?
// AND tb_account.user_name LIKE ?
```
### exists, not exists
@ -189,11 +189,11 @@ QueryWrapper queryWrapper=QueryWrapper.create()
)
);
// SQL:
// SELECT * FROM tb_account
// WHERE tb_account.id >= ?
// SQL:
// SELECT * FROM tb_account
// WHERE tb_account.id >= ?
// AND EXIST (
// SELECT 1 FROM tb_article WHERE tb_article.id >= ?
// SELECT 1 FROM tb_article WHERE tb_article.id >= ?
// )
```
@ -207,10 +207,10 @@ QueryWrapper queryWrapper=QueryWrapper.create()
.and(ACCOUNT.SEX.eq(1).or(ACCOUNT.SEX.eq(2)))
.or(ACCOUNT.AGE.in(18,19,20).or(ACCOUNT.USER_NAME.like("michael")));
// SQL:
// SELECT * FROM tb_account
// WHERE tb_account.id >= ?
// AND (tb_account.sex = ? OR tb_account.sex = ? )
// SQL:
// SELECT * FROM tb_account
// WHERE tb_account.id >= ?
// AND (tb_account.sex = ? OR tb_account.sex = ? )
// OR (tb_account.age IN (?,?,?) OR tb_account.user_name LIKE ? )
```
@ -222,8 +222,8 @@ QueryWrapper queryWrapper=QueryWrapper.create()
.from(ACCOUNT)
.groupBy(ACCOUNT.USER_NAME);
// SQL:
// SELECT * FROM tb_account
// SQL:
// SELECT * FROM tb_account
// GROUP BY tb_account.user_name
```
@ -236,9 +236,9 @@ QueryWrapper queryWrapper=QueryWrapper.create()
.groupBy(ACCOUNT.USER_NAME)
.having(ACCOUNT.AGE.between(18,25));
// SQL:
// SELECT * FROM tb_account
// GROUP BY tb_account.user_name
// SQL:
// SELECT * FROM tb_account
// GROUP BY tb_account.user_name
// HAVING tb_account.age BETWEEN ? AND ?
```
@ -251,7 +251,7 @@ QueryWrapper queryWrapper=QueryWrapper.create()
.from(ACCOUNT)
.orderBy(ACCOUNT.AGE.asc(), ACCOUNT.USER_NAME.desc().nullsLast());
// SQL:
// SQL:
// SELECT * FROM tb_account
// ORDER BY age ASC, user_name DESC NULLS LAST
```
@ -265,10 +265,10 @@ QueryWrapper queryWrapper = QueryWrapper.create()
.leftJoin(ARTICLE).on(ACCOUNT.ID.eq(ARTICLE.ACCOUNT_ID))
.where(ACCOUNT.AGE.ge(10));
// SQL:
// SELECT * FROM tb_account
// LEFT JOIN tb_article
// ON tb_account.id = tb_article.account_id
// SQL:
// SELECT * FROM tb_account
// LEFT JOIN tb_article
// ON tb_account.id = tb_article.account_id
// WHERE tb_account.age >= ?
```
@ -283,30 +283,30 @@ QueryWrapper queryWrapper = QueryWrapper.create()
.limit(10)
.offset(20);
// MySql:
// MySql:
// SELECT * FROM `tb_account` ORDER BY `id` DESC LIMIT 20, 10
// PostgreSQL:
// PostgreSQL:
// SELECT * FROM "tb_account" ORDER BY "id" DESC LIMIT 20 OFFSET 10
// Informix:
// Informix:
// SELECT SKIP 20 FIRST 10 * FROM "tb_account" ORDER BY "id" DESC
// Oracle:
// SELECT * FROM (SELECT TEMP_DATAS.*,
// Oracle:
// SELECT * FROM (SELECT TEMP_DATAS.*,
// ROWNUM RN FROM (
// SELECT * FROM "tb_account" ORDER BY "id" DESC)
// TEMP_DATAS WHERE ROWNUM <=30)
// SELECT * FROM "tb_account" ORDER BY "id" DESC)
// TEMP_DATAS WHERE ROWNUM <=30)
// WHERE RN >20
// Db2:
// SELECT * FROM "tb_account" ORDER BY "id" DESC
// Db2:
// SELECT * FROM "tb_account" ORDER BY "id" DESC
// OFFSET 20 ROWS FETCH NEXT 10 ROWS ONLY
// Sybase:
// Sybase:
// SELECT TOP 10 START AT 21 * FROM "tb_account" ORDER BY "id" DESC
// Firebird:
// Firebird:
// SELECT * FROM "tb_account" ORDER BY "id" DESC ROWS 20 TO 30
```

View File

@ -97,7 +97,7 @@ QueryWrapper query = QueryWrapper.create()
.and(ACCOUNT.USER_NAME.like("张").or(ACCOUNT.USER_NAME.like("李")));
// 执行 SQL
// ELECT * FROM tb_account
// SELECT * FROM tb_account
// WHERE tb_account.id >= 100
// AND (tb_account.user_name LIKE '%张%' OR tb_account.user_name LIKE '%李%' )
List<Account> accounts = accountMapper.selectListByQuery(query);
@ -116,7 +116,7 @@ QueryWrapper query=QueryWrapper.create()
.orderBy(ACCOUNT.ID.desc());
// 执行 SQL
// ELECT * FROM tb_account
// SELECT * FROM tb_account
// WHERE id >= 100
// AND (user_name LIKE '%张%' OR user_name LIKE '%李%' )
// ORDER BY `id` DESC