Question

I have two tables hello and login_table and below is their structure

user_info
-------
some_id | name | address

login_table
-------
id | username | password

some_id and id are autoincrement indexes.

Now how can i use INSERT statement with INNER JOIN in SQL

at present, i want add below data with same some_id and id

`name` = John
`address` = wall street
`username` = john123
`password` = passw123

below code shows, what i have tried so far.

insert into login_table lt
INNER JOIN user_info ui ON ui.some_id = lt.id
(ui.name, ui.address, lt.username, lt.password) 
values
('John', 'wall street', 'john123', 'passw123')

And this is not the one value, i want to add more than one value at a time.. how can i achieve.

thanks for help.

Answer 1

If you need to perform the two INSERT operations atomically, use a transaction:

START TRANSACTION;
INSERT INTO login_table (username, password) VALUES ('john123', 'passw123');
INSERT INTO user_info (name, address) VALUES ('John', 'wall street');
COMMIT;

N.B. Your storage engine must support transactions for this to work (e.g. InnoDB).

To insert multiple values into a table at once, use the multiple rows form of INSERT. As stated in the manual:

INSERT statements that use VALUES syntax can insert multiple rows. To do this, include multiple lists of column values, each enclosed within parentheses and separated by commas. Example:

INSERT INTO tbl_name (a,b,c) VALUES(1,2,3),(4,5,6),(7,8,9);

The values list for each row must be enclosed within parentheses. The following statement is illegal because the number of values in the list does not match the number of column names:

INSERT INTO tbl_name (a,b,c) VALUES(1,2,3,4,5,6,7,8,9);

VALUE is a synonym for VALUES in this context. Neither implies anything about the number of values lists, and either may be used whether there is a single values list or multiple lists.