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@ -50,23 +50,23 @@
## 基礎SQL語法
### 建議打開資料庫一起操作
### 新增資料
```
``` sql
INSERT INTO teaching_sql_2 (student_id,person_id,student_birthday) # 選擇好資料表及覽未明成
Values("M11112029","C123456789","900801") #將參數按照順序放入
```
### 更新資料
```
```sql
UPDATE teaching_sql_2 SET student_birthday='890801' # 將變動的資料設置好
WHERE student_id='M11112030'; #尋找student_id 為 M11112030 的參數
```
### 刪除資料
```
```sql
DELETE FROM teaching_sql_2 # 選擇要刪除的table表
WHERE student_id='M11112029' #刪除studen_id為M1112029
```
### 搜尋資料(最需要花時間學的地方，常常會遇到需要串接多個table的時候)
#### 所有資料
```
```sql
select * FROM teaching_sql_1
```
@ -78,7 +78,7 @@ select * FROM teaching_sql_1
| M11112029| 林大偉 | EL124 |
#### 指定欄位
```
```sql
select student_name FROM teaching_sql_1
```
|student_name |
@ -89,7 +89,7 @@ select student_name FROM teaching_sql_1
#### 多個指定欄位
```
```sql
select student_name,student_id FROM teaching_sql_1
```
@ -102,7 +102,7 @@ select student_name,student_id FROM teaching_sql_1
#### 查詢符合條件式的資料
```
```sql
select * FROM teaching_sql_1 WHERE student_id='M11112030'
```
| student_id | student_name | student_class |
@ -110,7 +110,7 @@ select * FROM teaching_sql_1 WHERE student_id='M11112030'
|M11112030| 張威勝| EL125|
#### 查詢符合條件式的資料(and)
```
```sql
select * FROM teaching_sql_1 WHERE student_id='M11112030' AND student_class='EL125' # 尋找同時符合 student_id='M11112030' 及 student_class='EL125'的資料
```
| student_id | student_name | student_class |
@ -119,7 +119,7 @@ select * FROM teaching_sql_1 WHERE student_id='M11112030' AND student_class='EL
#### 查詢符合條件式的資料(or)
```
```sql
select * FROM teaching_sql_1 WHERE student_id='M11112030' or student_class='EL124' # 尋找只要符合 student_id='M11112030' 或 student_class='EL124'的資料
```
| student_id | student_name | student_class |
@ -128,7 +128,7 @@ select * FROM teaching_sql_1 WHERE student_id='M11112030' or student_class='EL1
|M11112029|林大偉|EL124|
#### 串接2個資料表
```
```sql
SELECT teaching_sql_1.student_id, # 找尋teaching_sql_1的 student_id
teaching_sql_1.student_class, # 找尋teaching_sql_1的 student_class
teaching_sql_2.person_id # 找尋teaching_sql_2的 person_id