sql - Yes/No Calculation Based Off Of Other Tables Record -

-

i having issue calculating column in 1 table based off of tables records value. here layout:

tblcontainers:

container  isrented 00-0033    yes   00-0044    no

tblrentals:

customer   isrenting   container brian      yes         00-0044 jake       no          00-0033

so tblcontainers contains of containers, tblrentals contains of rental history company. can see containers referenced in both tables, renting. if in tblrentals, container listed has yes in isrenting column, in tblcontainers, isrented switched yes. in example above, in tblcontainers, isrented container 00-0033 changed no, , isrented 00-0044 changed yes.

i have found others this, however, they're based on sum's , pretty new bare me. reference others below see if guys me out.

thanks help!

references:

calculate field's value based on multiple records in table in access db

i need calculate values record in database based off of other values in other records

this last 1 similar on same table, it's not crossing tables.
access tables , calculations

if i'm understanding correctly, want use update statement join:

update tblcontainers c    inner join tblrentals r on c.container = r.container  set c.isrented = r.isrented

Comments

Post a Comment

Popular posts from this blog

magento2 - Magento 2 admin grid add filter to collection -

-
i created grid in admin xml ui components. need filter collection via url parameter , dont know how achieve that. tried inject requestinterface collection, filter didnt work. di.xml <virtualtype name="slidelistingdataprovider" type="magento\framework\view\element\uicomponent\dataprovider\dataprovider"> <arguments> <argument name="collection" xsi:type="object" shared="false">xxx\xxx\model\resourcemodel\grid\slide\collection</argument> <argument name="filterpool" xsi:type="object" shared="false">slidelistingfilterpool</argument> <!-- define new object filters --> </arguments> </virtualtype> <virtualtype name="slidelistingfilterpool" type="magento\framework\view\element\uicomponent\dataprovider\filterpool"> <arguments> <argument name="applier...
Read more

Android volley - avoid multiple requests of the same kind to the server? -

-
i using volley upload list of images server. happens within service. once image uploaded remove list. problem arises when internet connection breaks. when internet connection breaks , comes again thinking of adding images yet uploaded request queue. this can result in more 1 copy of same image saved on server request same image might have gone through before getting rseponse. how can address scenario? i'm not quite sure why you're using service schedule requests volley automatically runs it's request in seperate thread. nevertheless can listen both request results, successful , unsuccessful adding listeners. you can remove image list schedule request using volley. if succeeds can carry on desired, if fails can add again list. public static request getimageuploadrequest(final string image) { response.listener<t> responselistener = new response.listener<t>() { @override public void onresponse(t response...
Read more

Combining PHP Registration and Login into one class with multiple functions in one PHP file -

-
i'm trying combine registration, activation , login scripts php website backend script front end developer can pass variables different forms to. my question whether appropriate approach this. don't want have lot of php files different pieces of application developing. far have written following 2 functions login, register , activate user front end developer can call: <?php /** * created phpstorm. * user: karl * date: 26/07/2016 * time: 02:25 */ class users { function register_user($email, $password, $user_name) { $server_name = "localhost"; $u_name = "root"; $db_password = "root"; $db_name = "betamath_graspe"; //email notification variable $from_address="info@slack.com"; //registration form $msg_reg_user='username taken. please choose different username'; $msg_reg_email='email registered'; $msg_reg_active=...
Read more