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Updated on 2024-08-05 GMT+08:00

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Querying Concurrency Control Rules of SQL Statements

Function

This API is used to query concurrency control rules of SQL statements. Currently, this function is supported only for MySQL databases.

URI

GET /v3/{project_id}/instances/{instance_id}/sql-limit/rules

**Table 1** Path parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	Project ID. To obtain this value, see Obtaining a Project ID.
instance_id	Yes	String	Instance ID.

**Table 2** Query parameters
Parameter	Mandatory	Type	Description
offset	No	Integer	Offset. If offset is set to N, the resource query starts from the N+1 piece of data. The value is 0 by default, indicating that the query starts from the first piece of data. The value must be a number but cannot be a negative number.
limit	No	Integer	Number of records to be queried. The default value is 100. The value cannot be a negative number. The minimum value is 1 and the maximum value is 100.
datastore_type	Yes	String	Database type. The value can be: MySQL

Request Parameters

**Table 3** Request header parameters
Parameter	Mandatory	Type	Description
X-Auth-Token	Yes	String	User token.
X-Language	No	String	Language. The value can be: zh-cn en-us

Response Parameters

Status code: 200

**Table 4** Response body parameters
Parameter	Type	Description
sql_limit_rules	Array of SqlLimitRule objects	Concurrency control rules of SQL statements.
total_count	Integer	Total number of concurrency control rules of SQL statements.

**Table 5** SqlLimitRule
Parameter	Type	Description
id	String	ID of a concurrency control rule of SQL statements.
sql_type	String	SQL type.
pattern	String	Concurrency control rules.
max_concurrency	Integer	Maximum number of concurrent SQL statements.
max_waiting	Integer	Maximum waiting time.

Status code: 400

**Table 6** Response body parameters
Parameter	Type	Description
error_code	String	Error code. Minimum length: 8 Maximum length: 36
error_msg	String	Error message. Minimum length: 2 Maximum length: 512

Status code: 500

**Table 7** Response body parameters
Parameter	Type	Description
error_code	String	Error code. Minimum length: 8 Maximum length: 36
error_msg	String	Error message. Minimum length: 2 Maximum length: 512

Example Requests

Querying concurrency control rules of SQL statements

GET https://das.cn-north-1.myhuaweicloud.com/v3/054c630ff780d4cc2f40c00d7f6fb21d/instances/d871e13ee1044e21a473330cd67047cbin01/sql-limit/rules?datastore_type=MySQL&offset=0&limit=10

Example Responses

Status code: 200

Success

{
  "sql_limit_rules" : [ {
    "id" : "6",
    "sql_type" : "SELECT",
    "max_concurrency" : 1,
    "pattern" : "select~var~where~id"
  }, {
    "id" : "7",
    "sql_type" : "UPDATE",
    "max_concurrency" : 10,
    "pattern" : "update~table01~where~id"
  } ],
  "total_count" : 2
}