SQL, copy data from one table to another
One of those maintenance tasks: copying data from one table to another.
You can copy all elements from a table into another like this:
INSERT INTO some_table
SELECT * FROM other_tableOf course you can just select some if you want:
INSERT INTO some_table
SELECT * FROM other_table WHERE list=94If the table you’re copying to has existing data, you might have primary key duplication issues.
To leave the primary key column empty to make the table auto-fill it with its auto increment, I selected all columns except the primary key:
INSERT INTO some_table (`age`, `name`, `email`)
SELECT `age`, `name`, `email` FROM other_tableIn my case id was the primary key column, and I left it out.
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