DescribeUserSqlAdvice

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Last updated: 2021-08-09 10:49:14

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1. API Description

Domain name for API request: dbbrain.tencentcloudapi.com.

This API is used to get SQL statement optimization suggestions.

A maximum of 20 requests can be initiated per second for this API.

Note: This API supports Finance regions. If the common parameter Region is a Finance region, a domain name with the Finance region needs to be specified, for example: dbbrain.ap-shanghai-fsi.tencentcloudapi.com

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2. Input Parameters

The following request parameter list only provides API request parameters and some common parameters. For the complete common parameter list, see Common Request Parameters.

Parameter Name	Required	Type	Description
Action	Yes	String	Common parameter. The value used for this API: DescribeUserSqlAdvice.
Version	Yes	String	Common parameter. The value used for this API: 2021-05-27.
Region	Yes	String	Common parameter. For more information, please see the list of regions supported by the product.
InstanceId	Yes	String	Instance ID.
SqlText	Yes	String	SQL statement.
Schema	No	String	Database name.

3. Output Parameters

Parameter Name	Type	Description
Advices	String	SQL statement optimization suggestions, which can be parsed into JSON arrays. If there is no need for optimization, the output will be empty.
Comments	String	Notes of SQL statement optimization suggestions, which can be parsed into String arrays. If there is no need for optimization, the output will be empty.
SqlText	String	SQL statement.
Schema	String	Database name.
Tables	String	DDL information of related tables, which can be parsed into JSON arrays.
SqlPlan	String	SQL execution plan, which can be parsed into JSON arrays. If there is no need for optimization, the output will be empty.
Cost	String	Cost saving details after SQL statement optimization, which can be parsed into JSON arrays. If there is no need for optimization, the output will be empty.
RequestId	String	The unique request ID, which is returned for each request. RequestId is required for locating a problem.

4. Example

Example1 Getting SQL statement optimization suggestions

Input Example

https://dbbrain.tencentcloudapi.com/?Action=DescribeUserSqlAdvice
&InstanceId=cdb-c1nl9rpv
&SqlText=select * from t1 where id in ( ? )
&<Common request parameters>

Output Example

{
  "Response": {
    "RequestId": "e2a51350-8c9f-11eb-bc0f-c9f5ab88d057",
    "Advices": "[{\"TableName\": \"t1\", \"TableSchema\": \"test\", \"Keys\": [{\"SqlText\": \"alter table `test`.`t1` add index index_0(`id`);\"}]}]",
    "Comments": "[]",
    "Schema": "test",
    "Tables": "[{\"TableName\": \"t1\", \"TableSchema\": \"test\", \"TableDDL\": \"CREATE TABLE `test` (\n  `id` varchar(36) NOT NULL) ENGINE=InnoDB DEFAULT CHARSET=utf8 ROW_FORMAT=DYNAMIC\"}]",
    "SqlText": "select * from t1 where id in ( ? )",
    "SqlPlan": "{\"Before\": [{\"Format\": \"Table\", \"Data\": {\"Names\": [\"id\", \"select_type\", \"table\", \"partitions\", \"type\", \"possible_keys\", \"key\", \"key_len\", \"ref\", \"rows\", \"filtered\", \"Extra\"], \"Data\": [ [1, \"SIMPLE\", \"t1\", null, \"ALL\", null, null, null, null, 1530, 10, \"Using where\" ]]}}], \"After\": [{ \"Format\": \"Table\", \"Data\": {\"Names\": [\"id\", \"select_type\", \"table\", \"partitions\", \"type\", \"possible_keys\", \"key\", \"key_len\", \"ref\", \"rows\", \"filtered\", \"Extra\"], \"Data\": [[1, \"SIMPLE\", \"t1\", null, \"ref\", \"index_0\", \"index_0\", 1056, \"const\", 51, 100.00, null]]}}]}",
    "Cost": "{\"Before\": 0.1, \"After\": 0.03, \"Ratio\": 90.61}"
  }
}

Example2 Getting a suggestion that there is no need to optimize SQL statements

Input Example

https://dbbrain.tencentcloudapi.com/?Action=DescribeUserSqlAdvice
&InstanceId=cdb-c1nl9rpv
&SqlText=select * from t1 where id = ?
&<Common request parameters>

Output Example

{
  "Response": {
    "RequestId": "e2a51350-8c9f-11eb-bc0f-c9f5ab88d057",
    "Advices": "",
    "Comments": "",
    "Schema": "test",
    "Tables": "[{\"TableName\": \"t1\", \"TableSchema\": \"test\", \"TableDDL\": \"CREATE TABLE `test` (\n  `id` varchar(36) NOT NULL) ENGINE=InnoDB DEFAULT CHARSET=utf8 ROW_FORMAT=DYNAMIC\"}]",
    "SqlText": "select * from t1 where id in ( ? )",
    "SqlPlan": "",
    "Cost": ""
  }
}

5. Developer Resources

SDK

TencentCloud API 3.0 integrates SDKs that support various programming languages to make it easier for you to call APIs.

Command Line Interface

Tencent Cloud CLI 3.0

6. Error Code

The following only lists the error codes related to the API business logic. For other error codes, see Common Error Codes.

Error Code	Description
AuthFailure	Error with CAM signature/authentication.
InternalError	Internal error.
InvalidParameter	Incorrect parameter.
InvalidParameterValue	Incorrect parameter value.
MissingParameter	Missing parameter.
OperationDenied	Operation denied.
OperationDenied.UserHasNoStrategy	Error with CAM authentication.

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