# 如何安装？
- `pip install sqlman`
# 拿什么吸引你这个靓仔？
- 使用方式简单暴力
- 不用写SQL就能进行增删改查
### 连接方式是如此简易
- 一个字典参数即可
### 插入数据是如此贴心
- 自动推导
- 传入dict是插入一条数据，传入list是插入多条数据
- 多种插入模式
- 模式1，插入时，数据冲突则报错
- 模式2，插入时，数据冲突则忽略
- 模式3，插入时，数据发生冲突，把数据进行更新操作
- 模式4，插入时，自动过滤掉冲突的数据，只插入不冲突的数据
### 等等等等...
# 操练起来
### 连接mysql
```python
from sqlman import Handler
# mysql的连接信息
mysql_cfg = {
'host': 'localhost',
'port': 3306,
'user': 'admin',
'password': 'admin@1',
'db': 'test'
}
# 数据库对象
handler = Handler(mysql_cfg)
# 表格对象（注意：表不存在则引发异常）
student = handler.pick_table('student')
```
### 准备测试数据
```python
# 一条龙服务，创建people表并插入测试数据，每次插入一千条，累计插入一万条
handler.make_datas('people', once=1000, total=10000)
```
### 表格对象
```python
people = handler.pick_table('people')
```
### 插入数据
#### 单条插入
```python
data = {'id': 10001, 'name': '小明', 'age': 10, 'gender': '男'}
# 插入一条数据
people.insert_data(data)
# 当插入的数据与表中的数据存在冲突时，直接插入会报错，如果补充<unque_index>参数，则不报错
people.insert_data(data, unique_index='id')
```
#### 批量插入
```python
data = [
{'id': 10002, 'name': '小红', 'age': 12, 'gender': '女'},
{'id': 10003, 'name': '小强', 'age': 13, 'gender': '男'},
{'id': 10004, 'name': '小白', 'age': 14, 'gender': '男'}
]
# 插入多条数据
people.insert_data(data)
```
#### 插入数据时，如果数据冲突则进行更新
```python
data = {'id': 10001, 'name': '小明', 'age': 10, 'gender': '男'}
# 当数据冲突时，也可以直接进行更新操作，下面是把age更新为11
people.insert_data(data, update='age=age+1')
```
### 删除数据
```python
# delete from people where id=1
people.delete(id=1)
# delete from people where id in (1, 2, 3)
people.delete(id=[1, 2, 3])
# delete from people where age=18 limit 100
people.delete(age=18, limit=100)
```
### 更新数据
```python
# update people set name='tony', job='理发师' where id=1
people.update(new={'name': 'tony', 'job': '理发师'}, id=1)
# update people set job='程序员' where name='thomas' and phone='18959176772'
people.update(new={'job': '程序员'}, name='thomas', phone='18959176772')
```
### 查询数据
```python
# select * from people where id=1
people.query(id=1)
# select name, age from people where id=2
people.query(pick='name, age', id=2)
# select * from people where age=18 and gender in ('男', '女')
people.query(age=18, gender=['男', '女'])
# select name from people where age=18 and gender in ('男', '女') limit 5
people.query(pick='name', age=18, gender=['男', '女'], limit=5)
```
### 随机数据
```python
# 随机返回1条数据<dict>
print(people.random())
# 随机返回5条数据<list>
print(people.random(limit=5))
```
### 遍历表
```python
def show(datas):
for some in enumerate(datas, start=1):
print('第{}条 {}'.format(*some))
# 遍历整张表，默认每轮扫描1000条，默认只打印数据
people.scan()
# 限制id范围为101~222，每轮扫描100条，每轮的回调函数为show
people.scan('people', sort_field='id', start=101, end=222, once=100, dealer=show)
# 限制id范围的基础上，限制age=18
people.scan('people', sort_field='id', start=101, end=222, once=100, dealer=show, add_cond='age=18')
```
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\u6a21\u5f0f4\uff0c\u63d2\u5165\u65f6\uff0c\u81ea\u52a8\u8fc7\u6ee4\u6389\u51b2\u7a81\u7684\u6570\u636e\uff0c\u53ea\u63d2\u5165\u4e0d\u51b2\u7a81\u7684\u6570\u636e\n\n### \u7b49\u7b49\u7b49\u7b49...\n\n# \u64cd\u7ec3\u8d77\u6765\n\n### \u8fde\u63a5mysql\n\n```python\nfrom sqlman import Handler\n\n# mysql\u7684\u8fde\u63a5\u4fe1\u606f\nmysql_cfg = {\n 'host': 'localhost',\n 'port': 3306,\n 'user': 'admin',\n 'password': 'admin@1',\n 'db': 'test'\n}\n\n# \u6570\u636e\u5e93\u5bf9\u8c61\nhandler = Handler(mysql_cfg)\n\n# \u8868\u683c\u5bf9\u8c61\uff08\u6ce8\u610f\uff1a\u8868\u4e0d\u5b58\u5728\u5219\u5f15\u53d1\u5f02\u5e38\uff09\nstudent = handler.pick_table('student')\n```\n\n### \u51c6\u5907\u6d4b\u8bd5\u6570\u636e\n\n```python\n# \u4e00\u6761\u9f99\u670d\u52a1\uff0c\u521b\u5efapeople\u8868\u5e76\u63d2\u5165\u6d4b\u8bd5\u6570\u636e\uff0c\u6bcf\u6b21\u63d2\u5165\u4e00\u5343\u6761\uff0c\u7d2f\u8ba1\u63d2\u5165\u4e00\u4e07\u6761\nhandler.make_datas('people', once=1000, total=10000)\n```\n\n### \u8868\u683c\u5bf9\u8c61\n\n```python\npeople = handler.pick_table('people')\n```\n\n### \u63d2\u5165\u6570\u636e\n\n#### \u5355\u6761\u63d2\u5165\n\n```python\ndata = {'id': 10001, 'name': '\u5c0f\u660e', 'age': 10, 'gender': '\u7537'}\n\n# \u63d2\u5165\u4e00\u6761\u6570\u636e\npeople.insert_data(data)\n\n# \u5f53\u63d2\u5165\u7684\u6570\u636e\u4e0e\u8868\u4e2d\u7684\u6570\u636e\u5b58\u5728\u51b2\u7a81\u65f6\uff0c\u76f4\u63a5\u63d2\u5165\u4f1a\u62a5\u9519\uff0c\u5982\u679c\u8865\u5145<unque_index>\u53c2\u6570\uff0c\u5219\u4e0d\u62a5\u9519\npeople.insert_data(data, unique_index='id')\n\n```\n\n#### \u6279\u91cf\u63d2\u5165\n\n```python\ndata = [\n {'id': 10002, 'name': '\u5c0f\u7ea2', 'age': 12, 'gender': '\u5973'},\n {'id': 10003, 'name': '\u5c0f\u5f3a', 'age': 13, 'gender': '\u7537'},\n {'id': 10004, 'name': '\u5c0f\u767d', 'age': 14, 'gender': '\u7537'}\n]\n\n# \u63d2\u5165\u591a\u6761\u6570\u636e\npeople.insert_data(data)\n```\n\n#### \u63d2\u5165\u6570\u636e\u65f6\uff0c\u5982\u679c\u6570\u636e\u51b2\u7a81\u5219\u8fdb\u884c\u66f4\u65b0\n\n```python\ndata = {'id': 10001, 'name': '\u5c0f\u660e', 'age': 10, 'gender': '\u7537'}\n\n# \u5f53\u6570\u636e\u51b2\u7a81\u65f6\uff0c\u4e5f\u53ef\u4ee5\u76f4\u63a5\u8fdb\u884c\u66f4\u65b0\u64cd\u4f5c\uff0c\u4e0b\u9762\u662f\u628aage\u66f4\u65b0\u4e3a11\npeople.insert_data(data, update='age=age+1')\n```\n\n### \u5220\u9664\u6570\u636e\n\n```python\n# delete from people where id=1\npeople.delete(id=1)\n\n# delete from people where id in (1, 2, 3)\npeople.delete(id=[1, 2, 3])\n\n# delete from people where age=18 limit 100\npeople.delete(age=18, limit=100)\n```\n\n### \u66f4\u65b0\u6570\u636e\n\n```python\n# update people set name='tony', job='\u7406\u53d1\u5e08' where id=1\npeople.update(new={'name': 'tony', 'job': '\u7406\u53d1\u5e08'}, id=1)\n\n# update people set job='\u7a0b\u5e8f\u5458' where name='thomas' and phone='18959176772'\npeople.update(new={'job': '\u7a0b\u5e8f\u5458'}, name='thomas', phone='18959176772')\n```\n\n### \u67e5\u8be2\u6570\u636e\n\n```python\n# select * from people where id=1\npeople.query(id=1)\n\n# select name, age from people where id=2\npeople.query(pick='name, age', id=2)\n\n# select * from people where age=18 and gender in ('\u7537', '\u5973')\npeople.query(age=18, gender=['\u7537', '\u5973'])\n\n# select name from people where age=18 and gender in ('\u7537', '\u5973') limit 5\npeople.query(pick='name', age=18, gender=['\u7537', '\u5973'], limit=5)\n```\n\n### \u968f\u673a\u6570\u636e\n\n```python\n# \u968f\u673a\u8fd4\u56de1\u6761\u6570\u636e<dict>\nprint(people.random())\n\n# \u968f\u673a\u8fd4\u56de5\u6761\u6570\u636e<list>\nprint(people.random(limit=5))\n```\n\n### \u904d\u5386\u8868\n\n```python\ndef show(datas):\n for some in enumerate(datas, start=1):\n print('\u7b2c{}\u6761 {}'.format(*some))\n\n\n# \u904d\u5386\u6574\u5f20\u8868\uff0c\u9ed8\u8ba4\u6bcf\u8f6e\u626b\u63cf1000\u6761\uff0c\u9ed8\u8ba4\u53ea\u6253\u5370\u6570\u636e\npeople.scan()\n\n# \u9650\u5236id\u8303\u56f4\u4e3a101~222\uff0c\u6bcf\u8f6e\u626b\u63cf100\u6761\uff0c\u6bcf\u8f6e\u7684\u56de\u8c03\u51fd\u6570\u4e3ashow\npeople.scan('people', sort_field='id', start=101, end=222, once=100, dealer=show)\n\n# \u9650\u5236id\u8303\u56f4\u7684\u57fa\u7840\u4e0a\uff0c\u9650\u5236age=18\npeople.scan('people', sort_field='id', start=101, end=222, once=100, dealer=show, add_cond='age=18')\n```\n",
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