เปลี่ยนแปลงโต๊ะเพิ่มคอลัมน์ไม่ใช่โพรโทคอล aimcomment สิทธิ์

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สิทธิ์เปลี่ยนแปลงโต๊ะเพิ่มคอลัมน์ไม่ใช่โพรโทคอล aimcomment

-- ALTER TABLE <table> ADD <column> <type>  <constraint>;
ALTER TABLE members ADD age NUMBER;
ALTER TABLE members ADD birth_date DATE NOT NULL;
ALTER TABLE members ADD registering DATE DEFAULT sysdate;
ALTER TABLE members ADD member_id NUMBER UNIQUE;
0
0

สิทธิ์เปลี่ยนแปลงโต๊ะเพิ่มไม่ใช่โพรโทคอล aimcomment constraint

ALTER TABLE table_name MODIFY ( column_name NOT NULL);
Code language: SQL (Structured Query Language) (sql)

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