Mysql – Creating a temporary copy of a table with partitions

MySQL

I've got a little issue and wonder if anyone has come across it themselves or seen a solution.

In one of my reporting scripts, it creates a temporary copy of a table before inserting some rows in order to a bulk update on the source table. To create a copy I used the SQL

CREATE TEMPORARY TABLE myTable LIKE source.myTable;

Which works fine, apart from one table which is partitioned. MySQL can't create temp tables with partitions.

I can't do the alternative which would be to do…

CREATE TEMPORARY TABLE myTable SELECT * from source.myTable;

If you do that it a) only creates the column definitions to fit the data in the select (i.e. a VARCHAR column will only be defined according to the max length of the column in the select statement) and b) I don't want to copy all 4 million rows simply to truncate them in the next statement!

Is the only other option to create it manually from the information schema? That really feels like using a sledgehammer to crack a walnut, surely there must be a simpler way to do it? Not too mention a lot of work.

Best Answer

CREATE TEMPORARY TABLE myTable
    SELECT * from source.myTable
        LIMIT 0;           -- Add this

Still creates the temp table, but puts no rows in it.

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