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 (?, ?, ?, ?)'] ``` -- 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.