managed

rootfs_overlay/lkmc/nodejs/sequelize/ignore_duplicates.js

@@ -0,0 +1,47 @@
+#!/usr/bin/env node
+
+const assert = require('assert');
+const path = require('path');
+const { Sequelize, DataTypes } = require('sequelize');
+const sequelize = new Sequelize({
+  dialect: 'sqlite',
+  storage: 'tmp.' + path.basename(__filename) + '.sqlite',
+  define: {
+    timestamps: false
+  },
+});
+(async () => {
+const Tag = sequelize.define('Tag', {
+  name: {
+    type: DataTypes.STRING,
+    unique: true,
+  },
+});
+await sequelize.sync({force: true})
+await Tag.create({name: 't0'})
+
+// Individual create does not have the option for some reason.
+// Apparently you're just supposed to catch.
+// https://github.com/sequelize/sequelize/issues/4513
+//await Tag.create({name: 't0', ignoreDuplicates: true})
+
+// SQLite: INSERT OR IGNORE INTO as desired.
+const tags = await Tag.bulkCreate(
+  [
+    {name: 't0'},
+    {name: 't1'},
+    {name: 't1'},
+    {name: 't2'},
+  ],
+  {
+    ignoreDuplicates: true,
+  }
+)
+const tagsFound = await Tag.findAll({order: [['name', 'ASC']]})
+assert.strictEqual(tagsFound[0].name, 't0')
+assert.strictEqual(tagsFound[1].name, 't1')
+assert.strictEqual(tagsFound[2].name, 't2')
+assert.strictEqual(tagsFound.length, 3)
+
+await sequelize.close();
+})();