I have two tables. One table with a id, date, menu1, menu2, menu3 and another table with a id, id_date, number, menu_number.
In the second table there is data about users who have ordered a menu in a specific day. So example: ID: 1 ID_Date: 2014-09-09 Number: 4000 Menu_Number: Menu1. And with this Information I want to give out the Number, the date and the menu on this date which stands in the first table.
SELECT DISTINCT
B.ID, B.ID_Date, B.Menu, S.date
FROM
ordering B, menu_plan S
WHERE
B.ID_Date = S.Date
AND B.Number = '4000859'
This SQL statement only gives me the menu number for a specific day. But I want the content from the menu on this specific day from table 1. How does it work? Or should I do it in another way and write in the second table instead of the menu number the full menu?
SELECT DISTINCT
B.ID, B.ID_Date,
Menu =
CASE S.menu_number
WHEN 'Menu1' THEN B.menu1
WHEN 'Menu2' THEN B.menu2
WHEN 'Menu3' THEN B.menu3
ELSE 'Unknown'
END,
S.date
FROM
ordering B
JOIN menu_plan S ON B.ID_Date = S.Date
WHERE
B.Number = '4000859'
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