### 查找数据
# SELECT * FROM "数据表名" WHERE "元素"LIKE "内容"
SELECT * FROM "stock_data" WHERE "股票名称"LIKE "中国平安"
### 增加数据
INSERT INTO "数据表名"("元素1","元素2")
VALUES("内容1","内容2")
### 删除数据
DELETE FROM "数据表名" WHERE "元素"="内容"
## 3.MySQL运行常见错误及解决方法
报错如下:
mysqli::real_connect(): (HY000/1045): Access denied for user 'root'@'localhost' (using password: YES)