MySQL是一種開源的關系型數據庫管理系統，它具有高可靠性、高性能和穩定性，深受廣大IT人員的喜愛。MySQL支持廣泛的SQL語句，這里給大家整理了一些必背的SQL語句，以供參考。

1. 創建數據庫
CREATE DATABASE database_name;
2. 刪除數據庫
DROP DATABASE database_name;
3. 創建表
CREATE TABLE table_name (
column_name1 data_type constrains,
column_name2 data_type constrains,
...
);
4. 刪除表
DROP TABLE table_name;
5. 插入數據
INSERT INTO table_name (column1, column2, ...)
VALUES (value1, value2, ...);
6. 更新數據
UPDATE table_name
SET column_name = new_value
WHERE condition;
7. 刪除數據
DELETE FROM table_name
WHERE condition;
8. 查詢數據
SELECT column1, column2, ...
FROM table_name
WHERE condition
ORDER BY column_name
LIMIT number;
9. 聚合函數
SELECT COUNT(column_name) FROM table_name;
SELECT SUM(column_name) FROM table_name;
SELECT AVG(column_name) FROM table_name;
SELECT MAX(column_name) FROM table_name;
SELECT MIN(column_name) FROM table_name;
10. 連接表
SELECT column_name(s)
FROM table1
INNER JOIN table2
ON table1.column_name = table2.column_name;
11. 子查詢
SELECT column_name(s)
FROM table_name
WHERE column_name IN (SELECT column_name FROM table_name WHERE condition);
12. 修改表結構
ALTER TABLE table_name ADD COLUMN column_name data_type;
ALTER TABLE table_name MODIFY COLUMN column_name data_type;
ALTER TABLE table_name DROP COLUMN column_name;
13. 觸發器
CREATE TRIGGER trigger_name
AFTER INSERT/UPDATE/DELETE
ON table_name
FOR EACH ROW
BEGIN
statements;
END;

以上就是一些MySQL必背的SQL語句，熟練掌握這些語句對于進行數據庫操作將會有很大幫助。