it's true that I insert the same record every time I run the code But it's unique , right ? it shouldn't insert to the table right ?
My purpose is loop the code and see if any new record updated , if so , insert into the table . any where I did wrong ? thanks On Sunday, May 21, 2017 at 6:50:03 PM UTC+8, bb1898 wrote: > > Am 21.05.2017 um 12:28 schrieb R0R0N0A: > > I have a table and some keys inside it > > have two unique key > > when i first run the code it runs okay > > but when I sencond time run it > > it says a unique key constrains > > > > > > here's the matter that I need to loop the code to query some new updates > > and insert to database > > I dont know why except the first time . why other time I run it , it got > > error > > > > many thanks ! > > > > ``` > > __tablename__ = 'listings' > > > > id = Column(Integer,primary_key=True,autoincrement=True) > > link = Column(String,unique=True) > > title = Column(String) > > img = Column(String,unique=True) > > name = Column(String) > > ``` > > > > error code : > > ``` > > UNIQUE constraint failed: listings.img [SQL: 'INSERT INTO listings > > (link, title, img, name) VALUES (?, ?, ?, ?)'] > > ``` > > > ... > > > > > To post example code, please provide an MCVE: Minimal, Complete, and > > Verifiable Example. See http://stackoverflow.com/help/mcve for a full > > description. > > Your example isn't complete or verifiable, but I'll guess: do you > perhaps try to insert the same record every time you run the code? You > don't show the values you're inserting, so guessing is all we can do. > > How do you connect to your database? Did you try to use "echo=True" in > that call? That could tell you which query is sent to the database and > what values are used. > > HTH > Sibylle > > > > -- SQLAlchemy - The Python SQL Toolkit and Object Relational Mapper http://www.sqlalchemy.org/ To post example code, please provide an MCVE: Minimal, Complete, and Verifiable Example. See http://stackoverflow.com/help/mcve for a full description. --- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sqlalchemy+unsubscr...@googlegroups.com. To post to this group, send email to sqlalchemy@googlegroups.com. Visit this group at https://groups.google.com/group/sqlalchemy. For more options, visit https://groups.google.com/d/optout.
