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				+'use strict'; 
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				+ 
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				+/** @type {import('sequelize-cli').Migration} */ 
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				+module.exports = { 
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				+  async up (queryInterface, Sequelize) { 
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				+     await queryInterface.addColumn('Articles', 'type', { 
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				+      type: Sequelize.INTEGER, 
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				+      allowNull: true, // 根据需要设置是否允许为空 
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				+    }); 
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				+ 
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				+    await queryInterface.addColumn('Articles', 'img', { 
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				+      type: Sequelize.TEXT, 
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				+      allowNull: true, // 根据需要设置是否允许为空 
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				+    }); 
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				+  }, 
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				+ 
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				+  async down (queryInterface, Sequelize) { 
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				+    await queryInterface.removeColumn('Articles', 'type'); 
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				+    await queryInterface.removeColumn('Articles', 'img'); 
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				+  } 
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				+}; 
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