mysql update table if record not in temp table

Question

Alright, I have multiple MySQL statements that lead into an issue I'm having updating a particular table. First let me show you my code, then I'll explain what I'm trying to do:

/*STEP 1 - create a temporary table to temporarily store the loaded csv*/
CREATE TEMPORARY TABLE IF NOT EXISTS `temptable1` LIKE `first60dayactivity`;

/*STEP 2. load the csv into the previously created temporary table*/
LOAD DATA LOCAL INFILE '/Users/me/Downloads/some.csv'
IGNORE INTO TABLE `{temptable}`
FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '\"' 
LINES TERMINATED BY '\r\n' 
IGNORE 1 LINES 
SET CUSTID = 1030,
    CREATED = NOW(),
    isactive = 1;

/*STEP 3. update first60dayactivity table changing isactive for records that are not in the temptable*/
UPDATE `first60dayactivity` fa 
    INNER JOIN `temptable1` temp 
        ON  temp.`mid` = fa.`mid`
        AND temp.`primarypartnername` = fa.`primarypartnername`
        AND temp.`market` = fa.`market`
        AND temp.`agedays` = fa.`agedays`
        AND temp.`opendate` = fa.`opendate`
        AND temp.`CUSTID` = fa.`CUSTID`
SET fa.isactive = IF( temp.`mid` IS NULL, 0, 1 );

/*STEP 4. insert the temp table records into the real table*/
.....blah blah blah.....

Ok, first create a temporary table so that we have a table to hold the imported .csv data. Next, import the .csv data into the temporary table (all this works perfectly so far).

Here is where I run into an issue. I'm wanting to update the isactive column of each record of the first60dayactivity table to 0 if the record is NOT found in temptable1 (after my import). Ultimately, I'm gathering a .csv, the .csv has the new live data that should be considered "active" and I need to set the old data to inactive. So, the update does an INNER JOIN to match on several column to see if the record is found in the temptable1, if it isn't then set the activity to 0, if it is found in temptable1 then ensure the activity status is 1.

The problem here is that all records in first60dayactivity are retaining the 1 property to indicate it is active. Nothing is getting updated to 0 even though I have proof new records exist within temptable1... Can someone tell me what I'm doing wrong in my query?

Thanks in advance!

Answer 1

temp.mid can never be NULL because you use this column in your join condition and you use an INNER JOIN.

Your join (without the insert) should return the matching rows. Using a LEFT JOIN for the update should do what I suppose you want to do.