mysql - On Duplicate Key Update insert record every time -


i'm using mysql query

insert table (vin,name,city,dob) values ('der12','john','city name','2016-17-10')  on duplicate key update name='john'

table structure 

id - bigint -primary key vin - varchar  name - varchar city - varchar dob - varchar

so here have id bigint , autoincreament , , vin can't duplicate , need check if vin in table , update record or nothing if same , if vin diffrent insert record.

i tried making vin unique as

alter table table add unique (vin)

but problem after adding when run query shows duplicacy error instead of updating or ignoring .

need kind .

thanks in advance

from understood, want add record if "vin" different else keep previous record is.

you can count of records having "vin" "john" or value inserting currently. if count "0", insert record else nothing.


Comments

Post a Comment

Popular posts from this blog

php - How to add and update images or image url in Volusion using Volusion API -

actually have store importing products store product data insert , update image or image url not insert , update. this xml code name datapro.txt. <products_joined> <productcode>3710_012t</productcode> <vendor_partno>eah5450silent/di/1gd3(lp)</vendor_partno> <productname>test product ta</productname> <hideproduct>n</hideproduct> <stockstatus>20</stockstatus> <lastmodified>1/5/2016 10:25:00 am</lastmodified> <lastmodby>2</lastmodby> <productweight>0.9</productweight> <productprice>100</productprice> <productmanufacturer>asus tek</productmanufacturer> <vendor_price>32.69</vendor_price> <numproductssharingstock>0</numproductssharingstock> <categoryids>107</categoryids> <producturl>http://tebkq.mvlce.servertrust.com/productdetails.asp?productcode=3710_012t</producturl...
Read more

Laravel mail error `Swift_TransportException in StreamBuffer.php line 269: Connection could not be established with host smtp.gmail.com [ #0]` -

i developing website contact-us page guest users can send me email using gmail . anytime try send mail using contact-us form, error swift_transportexception in streambuffer.php line 269: connection not established host smtp.gmail.com [ #0] this mail.php return [ 'driver' => env('mail_driver', 'smtp'), 'host' => env('mail_host', 'smtp.gmail.com'), 'port' => 587, 'from' => ['address' => '', 'name' => ''], 'encryption' => env('mail_encryption', 'tls'), 'username' => env('mail_username'), 'password' => env(mail_password), 'sendmail' => '/usr/sbin/sendmail -bs', 'pretend' => env('mail_pretend', false), ]; this .env mail_driver=smtp mail_host=smtp.gmail.com mail_port=587 mail_username=afecjaped@gmail.com mail_password=********...
Read more

c# SetCompatibleTextRenderingDefault must be called before the first -

i tried search exception couldn't find solution on case i'am using code below invoke .net application : assembly assem = assembly.load(data); methodinfo method = assem.entrypoint; var o = activator.createinstance(method.declaringtype); method.invoke(o, null); the application invoked has form , in entrypoint of application : [stathread] static void main() { application.enablevisualstyles(); application.setcompatibletextrenderingdefault(false); //exception application.run(new form1()); } setcompatibletextrenderingdefault must called before first iwin32window object created in application. edit : assembly = assembly.load(data); methodinfo method = a.gettype().getmethod("start"); var o = activator.createinstance(method.declaringtype); method.invoke(o, null); you should create new method skips initialization...
Read more