Question

I have 31 separate tables (actually I have 365, but lets keep this simple) in a MySQL database, each containing data for a given day. The tables are (badly) named based on the day.

Example:

island01Aug07
island02Aug07
island03Aug07
island04Aug07
...
island31Aug07

I would like to combine all the tables into one master table:

island_08

It would be simple to use INSERT INTO but my problem is that the tables do not have a column to denote the day. It would have to be added into the destination table, and then I would need to populate that when moving/copying the tables over.

Suggestions, advice and solutions welcome.

Answer 1

CREATE TABLE island_08 (mydate DATE NOT NULL, field1 …)

INSERT
INTO     island_08 (mydate, field1, field2)
SELECT  '2007-07-01', field1, field2
FROM    island01Aug07
UNION ALL
SELECT  '2007-07-02', field1, field2
FROM    island02Aug07
UNION ALL
…