insert ignore
批量操作
https://github.com/pallets/flask-sqlalchemy/issues/241
https://docs.sqlalchemy.org/en/14/changelog/migration_12.html#support-for-insert-on-duplicate-key-update
https://stackoverflow.com/questions/46654221/sqlalchemy-core-insert-ignore-and-on-duplicate-key-update
https://stackoverflow.com/questions/2218304/sqlalchemy-insert-ignore
https://stackoverflow.com/questions/39256258/how-do-i-tell-sqlalchemy-to-ignore-certain-say-null-columns-on-insert
https://github.com/sqlalchemy/sqlalchemy/issues/5374
Original: https://www.cnblogs.com/buxizhizhoum/p/14807776.html
Author: Go_Forward
Title: sqlalchemy insert or ignore
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