Question

I have two tables and need top copy one to another INSERT INTO tbl_new SELECT FROM tbl_old

they both have 3 exact same columns, but tbl_new has 4th column called “type” how can i populate it in the same query.

I need to copy row from tbl_old and assign value to cell “type”

INSERT INTO tbl_new SELECT FROM tbl_old, (type) values (floor(rand() * 10))

does not work

Answer 1

Say tbl_old has two columns and tbl_new has three

tbl_old
colA | colB

tbl_new
colA | colB | colC

Suppose you want to populate colC with sum of colA and colB values. You can use this:

INSERT INTO tbl_new (colA, colB, colC) SELECT colA,colB,(colA+colB) FROM tbl_old;

In your example:

INSERT INTO tbl_new (colA, colB, colC) SELECT colA,colB,floor(rand()*10) FROM tbl_old;