MYSQL Delete removed from the multiplayer table

Syntax 1,

Delete table_list_a from Table_list_b where bool_expression;

Removes a line of bool expression true from Delete_table_list_a.

Example:

1.

CREATE TABLE T1 (ID int);

CREATE TABLE T2 (ID int);

CREATE TABLE T3 (ID int);

2.

Insert into T1 (ID) VALUES (1), (4), (5), (100);

Insert into T2 (ID) VALUES (2), (6), (7), (100);

Insert into T3 (ID) VALUES (3), (8), (9), (100);

3.

4.

Delete t1,t2 from t1,t2,t3 where t1.id = T2. Id and t2.id = t3.id;

Syntax 2,

Delete from t1,t2 using (T1,T2,T3) where t1.id = T2. Id and t2.id = t3.id;

can also play the same role!

Summary: When searching for rows to be deleted, these statements use all three tables, but only the corresponding rows are removed from table T1 and table T2

MYSQL Delete removed from the multiplayer table