extract last week data (and not last 7 days) - mysql

Question

I have data with below format.
id - autoincrement
myDate - timestamp
What I want to extract is get ids of for the last week.
Note By last week, I meant from Sat - Thu and not last 7 days. Considering current date (12-Feb-2013), for me, last week would be 2-Feb-2013 to 8-Feb-2013.
I know you would say, week starts from Sunday, but as I am working in Arab countries, here Friday is OFF and work starts from Saturday.
I know for last 7 days it would be just below code
BETWEEN NOW() and DATE_SUB(NOW(), INTERVAL 7 DAY)
Data at sqlfiddle

Answer 1

Can you try below method to compute the desired result:
SELECT *,WEEKOFYEAR(dt),DAYOFWEEK(dt),DAYNAME(dt), DAYOFWEEK(NOW()),WEEKOFYEAR(NOW())
FROM tab1
WHERE 1
AND
(
(DAYOFWEEK(NOW()) = 1 OR DAYOFWEEK(NOW()) = 6 OR DAYOFWEEK(NOW()) = 7)
AND
WEEKOFYEAR(dt) = WEEKOFYEAR(NOW()) AND DAYOFWEEK(dt) < 6
)
OR
(
(DAYOFWEEK(NOW()) = 2 OR DAYOFWEEK(NOW()) = 3 OR DAYOFWEEK(NOW()) = 4
OR DAYOFWEEK(NOW()) = 5)
AND
(
(
(WEEKOFYEAR(dt) = WEEKOFYEAR(NOW())-2 AND DAYOFWEEK(dt) >= 6)
OR
(WEEKOFYEAR(dt) = WEEKOFYEAR(NOW())-1 AND DAYOFWEEK(dt) > 1 AND DAYOFWEEK(dt) < 6)
)
)
);
I know this is not the smartest way, but based on this you might get hint for better solution.
Demo at sqlfiddle