using insert with when mysql code example

Example: mysql insert

INSERT INTO table1 (col1, col2) VALUES (3, 'A string');
INSERT INTO table1 (col1) VALUES (3);			-- col2 will be NULL if allowed
INSERT INTO table1 VALUES (3, 'A string');     	-- all table1 columns
INSERT INTO table1 (col1, col2) SELECT value3, value1 FROM table2;