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Target customers: users who need to query logs in the following scenarios. Log Service provides the index-based query feature. However, in some scenarios, indexes cannot be created or used. Examples: 1. Indexes are not created for some fields to reduce costs. In this scenario, an urgent need to query historical logs may not be filled. 2. The length of a field value exceeds the upper limit supported by indexes. In this scenario, the excess part cannot be queried. 3. A large number of field names are involved and cannot be obtained in advance. In this scenario, field indexes cannot be created. 4. The type of a field is changed. In this scenario, the field cannot be queried. Features released: Log Service provides the scan-based query feature that allows you to query logs based on specific fields without the need to configure indexes for the fields. This feature helps you reduce index traffic and storage space fees. You can specify the type of a column based on your business requirements regardless of whether an index is created or the type of the index. The query capability is enhanced and multiple functions are supported.