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sql語句筆記

id name age
0 王二 23
1 張三 24
2 張四 25

1.查詢語句

SELECT * FROM t_table;
SELECT name FROM t_table;
SELECT name FROM t_table WHERE id = 1;
SELECT name, age FROM t_table WHERE name LIKE
'%王%';

2.刪除語句

DELETE FROM t_table;
DELETE FROM t_table WHERE id = 1;

3.增加語句

INSERT INTO 
t_table ('name', 'age') 
VALUES ('麻子', '26');

4.修改語句

UPDATE t_table
SET
	name = '章三',
	age = '34'
WHERE
	id = 1;

5.刪除後重置主鍵

謹慎使用

truncate table t_table