upsert

问题 I'm trying to develop a Q&A website in PHP using a PostgreSQL database. I have an action to create a page which has a title, body, category and tags. I managed to insert all those fields however I'm having some issues inserting multiple tag values. I used this function to get the comma separated values into an array and now I want something that inserts each array element into the database (avoiding repetitions) on table tags and after that insert on my many to many relationship table

来源： https://stackoverflow.com/questions/38781657/upsert-in-redshift

来源： https://stackoverflow.com/questions/38781657/upsert-in-redshift

来源： https://stackoverflow.com/questions/38781657/upsert-in-redshift

来源： https://stackoverflow.com/questions/38781657/upsert-in-redshift

来源： https://stackoverflow.com/questions/62388767/how-to-upsert-pandas-dataframe-to-microsoft-sql-server-table

来源： https://stackoverflow.com/questions/62388767/how-to-upsert-pandas-dataframe-to-microsoft-sql-server-table

来源： https://stackoverflow.com/questions/64273156/on-conflict-clause-how-to-replace-do-nothing-by-do-update

来源： https://stackoverflow.com/questions/43278696/golang-mgo-insert-or-update-not-working-as-expected

来源： https://stackoverflow.com/questions/43278696/golang-mgo-insert-or-update-not-working-as-expected