WHERE子句中的MySQL条件IF语句

Question

I'm going nuts...cannot figure this out after a gazillion google searches. I have the following table (Net)

I'm trying to select the rows that matches owner/privacy info.

ID       | net       | owner        |   privacy
+++++++++++++++++++++++++++++++++++++++++++++++
1        | 1234      | bob          |   1
2        | 2345      | charles      |   1
3        | 3456      | city         |   0
4        | 4567      | public       |   0

If Bob is extracting rows it should go like this: IF (owner = "bob") then select the row if privacy = 0 OR 1 ELSE select row if privacy = 0

He can extract his private row (privacy = 1) and any other row where privacy = 0

If've tried this but doesn't give any result:

SELECT * FROM `Net` WHERE IF (STRCMP(owner, 'bob'), 'privacy < 2', 'privacy = 0')

Answer 1

You could use the or boolean operator to simplify this logic:

SELECT *
FROM   my_table
WHERE  (owner = 'bob' AND (privacy IN (0, 1)) OR privacy = 0

Assuming that privacy can ever only be 0 or 1, if the owner is bob , you could just omit the privacy and branch altogether:

SELECT *
FROM   my_table
WHERE  owner = 'bob' OR privacy = 0