SQL/python/README.md

## 記得安裝 pymysql
```
pip install pymysql
```
 


### 資料庫連線設定
```
import pymysql
db = pymysql.connect(host='140.125.21.65', port=3307, user='VIP125', passwd='@VIPvip125', db='VIP125',
                     charset='utf8')
```


### 建立操作游標
```
cursor = db.cursor()
```

### SQL語法（查詢資料庫版本）
```
sql = 'SELECT VERSION()'
```

### 執行語法
```
cursor.execute(sql)
```

### 選取第一筆結果
```
data = cursor.fetchone()
print("Database version : %s " % data)

```

### 資料讀取(全部)
```
sql = "select * from test_0525_01"
cursor.execute(sql)
data = cursor.fetchall()
print(f'ALL_data = {data}')
```


### 查詢資料(單獨)
```
sql = "SELECT user_id FROM test_0525_01;"
cursor.execute(sql)
data = cursor.fetchall()
print(f'user_id = {data}')
```


### 查詢資料(某筆)
```
sql = "SELECT *  FROM test_0525_01 WHERE user_id='1000';"
cursor.execute(sql)
data = cursor.fetchall()
print(f'user_id=1000 : {data}')

```

### 刪除資料
```
sql = "DELETE FROM test_0525_01 WHERE user_id='1001';"
cursor.execute(sql)
db.commit()
```


### 更新資料
```
sql = "UPDATE test_0525_01 SET user_name='user_update_1000' WHERE user_id='1000';"
cursor.execute(sql)
db.commit()
```


### 資料寫入
```
test_data = ['1001', 'test_1001']
sql = "INSERT INTO test_0525_01 (user_id,user_name) VALUES (%s,%s);"
cursor.execute(sql, test_data)
db.commit()
```


### 關閉連線
```
db.close()
```