SELECT from various tables, with a list of indexes - php

Question

Here is the scenario.
I'm developing a timeclock system; I have these tables:
-punch (id_punch,date)
-in1 (id_in1,time,id_punch,...)
-in2 (id_in2,time,id_punch,...)
.
-in6 (id_in6,time,id_punch,...)
-out1 (id_out1,time,id_punch,...)
-out2 (id_out2,time,id_punch,...)
.
-out6 (id_out6,time,id_punch,...)
My question is, how can I with only one query in PHP to get all values from in and out table, from a list of id_punch values, for example:
Get all punchs of September, or
Get all punchs of July to December,
I mean... from a list of id_punch between two dates, get all the results from the in, out table.
The only way I think is to do a query with each id_punch variable, but in a month its about 20-25 queries... to much?

Answer 1

To get all the data from the tables you'll need to join them with JOIN MySQL JOIN
But from what I can gather by looking at you tables, you probably should be thinking about making this into one table rather than the multiple tables you have here.

Answer 2

You really need to store all the in/out data in one table that is a child of punch:
CREATE TABLE punch (
id_punch SERIAL PRIMARY KEY,
punch_date DATE NOT NULL,
ip_address INT UNSIGNED NOT NULL
-- plus other attributes
) ENGINE=InnoDB;
CREATE TABLE inout (
id_punch BIGINT UNSIGNED,
in_time TIME NOT NULL,
out_time TIME NULL,
PRIMARY KEY (id_punch, in_time),
FOREIGN KEY (id_punch) REFERENCES punch (id_punch)
) ENGINE=InnoDB;
Now you can query very easily for all punches in September:
SELECT *
FROM punch LEFT OUTER JOIN inout USING (id_punch)
WHERE EXTRACT(YEAR_MONTH FROM punch_date) = '200909';

Answer 3

Your database schema is a little unclear, but if you're asking how to get the results corresponding to a list of ids you already have this should work (assuming your ids are 1,3,5,7,9)
SELECT * FROM table1, table2, table 3
WHERE table1.punch_id = table2.punch_id AND table2.punch_id = table3.punch_id AND table3.punch_id IN (1,3,5,7,9)
you'll probably need to modify it just make sure every table's punch_id is joined to that IN constraint

Answer 4

I can't use one table cause i have some informations in each punch, as ipaddress, and other information.
Neil, the answer was in my nose, i already saw a solution like yours, but my doubt is how to put the list in the query, answer for my own question = use a foreach() in php to "populate" this list...
Something like:
> SELECT * FROM table1, table2, table 3 WHERE table1.punch_id = table2.punch_id AND table2.punch_id = table3.punch_id AND table3.punch_id IN (<? foreach($query->results() as $row) echo $row->id_punch;?>)
im using codeigniter