Sequelize: update in bulk

问题:

I'm using Node.js, MySQL and Sequelize. I'd like to insert some 10k rows into a table at once. The table has custom primaryKey field, that is being set manually. The data are downloaded from web and are overlapping.

I'd like to have a version of bulkCreate that wouldn't fail if any of the rows in data have unique keys that are already present in the table. Such kind of things is done in MySQL via INSERT ... ON DUPLICATE KEY UPDATE construct.

How do I do it in Sequelize?

回答1:

Pass in an options object to bulkCreate with ignoreDuplicates set to true

bulkCreate([...], { ignoreDuplicates: true }) 

回答2:

Yuri's answer will ignore duplicates... there is an option for updateOnDuplicate:

Fields to update if row key already exists (on duplicate key update)? (only supported by mysql & mariadb). By default, all fields are updated.

http://docs.sequelizejs.com/en/latest/api/model/#bulkcreaterecords-options-promisearrayinstance

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