本文整理汇总了TypeScript中sequelize/lib/query-interface.QueryInterface.addIndex方法的典型用法代码示例。如果您正苦于以下问题：TypeScript QueryInterface.addIndex方法的具体用法？TypeScript QueryInterface.addIndex怎么用？TypeScript QueryInterface.addIndex使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类sequelize/lib/query-interface.QueryInterface的用法示例。
在下文中一共展示了QueryInterface.addIndex方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的TypeScript代码示例。
示例1:
queryInterface.removeColumn('Person', 'signature');
queryInterface.changeColumn(
'nameOfAnExistingTable',
'nameOfAnExistingAttribute',
{
type: DataTypes.FLOAT,
allowNull: false,
defaultValue: 0.0
}
);
queryInterface.renameColumn('Person', 'signature', 'sig');
// This example will create the index person_firstname_lastname
queryInterface.addIndex('Person', ['firstname', 'lastname']);
// This example will create a unique index with the name SuperDuperIndex using the optional 'options' field.
// Possible options:
// - indicesType: UNIQUE|FULLTEXT|SPATIAL
// - indexName: The name of the index. Default is __
// - parser: For FULLTEXT columns set your parser
// - indexType: Set a type for the index, e.g. BTREE. See the documentation of the used dialect
// - logging: A function that receives the sql query, e.g. console.log
queryInterface.addIndex(
'Person',
['firstname', 'lastname'],
{
indexName: 'SuperDuperIndex',
indicesType: 'UNIQUE'
}示例2:
// or
queryInterface.changeColumn(
{ tableName: 'nameOfAnExistingTable', schema: 'nameOfSchema' },
'nameOfAnExistingAttribute',
{
allowNull: false,
defaultValue: 0.0,
type: DataTypes.FLOAT,
}
);
queryInterface.renameColumn('Person', 'signature', 'sig');
// This example will create the index person_firstname_lastname
queryInterface.addIndex('Person', ['firstname', 'lastname']);
// This example will create a unique index with the name SuperDuperIndex using the optional 'options' field.
// Possible options:
// - indexName: The name of the index. Default is __
// - parser: For FULLTEXT columns set your parser
// - indexType: Set a type for the index, e.g. BTREE. See the documentation of the used dialect
// - logging: A function that receives the sql query, e.g. console.log
queryInterface.addIndex('Person', ['firstname', 'lastname'], {
name: 'SuperDuperIndex',
type: 'UNIQUE',
});
queryInterface.removeIndex('Person', 'SuperDuperIndex');
// or