MySQL: How to create a TABLE
262.9 هزار بار بازدید -
2 سال پیش
-
#sql #MySQL #table
https://www.seevid.ir/fa/w/XfrgCK6BX5w Intro
#sql #MySQL #table
https://www.seevid.ir/fa/w/XfrgCK6BX5w Intro
https://www.seevid.ir/fa/w/XfrgCK6BX5w CREATE TABLE
https://www.seevid.ir/fa/w/XfrgCK6BX5w SELECT * FROM TABLE
https://www.seevid.ir/fa/w/XfrgCK6BX5w RENAME TABLE
https://www.seevid.ir/fa/w/XfrgCK6BX5w DROP TABLE
https://www.seevid.ir/fa/w/XfrgCK6BX5w Add a column
https://www.seevid.ir/fa/w/XfrgCK6BX5w Rename a column
https://www.seevid.ir/fa/w/XfrgCK6BX5w Modify a column
https://www.seevid.ir/fa/w/XfrgCK6BX5w Change column position AFTER
https://www.seevid.ir/fa/w/XfrgCK6BX5w Change column position FIRST
https://www.seevid.ir/fa/w/XfrgCK6BX5w Drop a column
https://www.seevid.ir/fa/w/XfrgCK6BX5w Conclusion
CREATE TABLE employees (
employee_id int PRIMARY KEY,
first_name VARCHAR(50),
last_name VARCHAR(50),
hourly_pay DECIMAL(5, 2),
hire_date DATE
);
RENAME TABLE employees TO workers;
DROP TABLE employees;
ALTER TABLE employees
ADD phone_number VARCHAR(15);
ALTER TABLE employees
RENAME COLUMN phone_number TO email;
ALTER TABLE employees
MODIFY COLUMN email VARCHAR(15);
ALTER TABLE employees
MODIFY email VARCHAR(100)
AFTER last_name;
ALTER TABLE employees
MODIFY email VARCHAR(100)
FIRST;
ALTER TABLE employees
DROP COLUMN email;
2 سال پیش
در تاریخ 1401/07/17 منتشر شده
است.
262,980
بـار بازدید شده