Querying Concurrency Control Rules of SQL Statements

Function

This API is used to query concurrency control rules of SQL statements. Before calling this API:

Learn how to authorize and authenticate it.
Obtain the required region and endpoint.

URI

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

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

**Table 2** Query parameters
Parameter	Mandatory	Type	Description
node_id	Yes	String	Node ID.
sql_type	No	String	SQL statement type. The value is case-insensitive. If this parameter is not specified, concurrency control rules of all types of statements are queried. Value: SELECT UPDATE DELETE

Request Parameters

**Table 3** Request header parameters
Parameter	Mandatory	Type	Description
X-Auth-Token	Yes	String	User token. If the following response body is returned for calling the API used to obtain a user token, the request is successful. After the request is processed, the value of X-Subject-Token in the message header is the token value.
X-Language	No	String	Request language type. The default value is en-us. Value: en-us zh-cn

Response Parameters

Status code: 200

**Table 4** Response body parameters
Parameter	Type	Description
node_id	String	Node ID.
sql_filter_rules	Array of SqlFilterRule objects	Concurrency control rules of SQL statements.

**Table 5** SqlFilterRule
Parameter	Type	Description
sql_type	String	SQL statement type. Value: SELECT UPDATE DELETE
patterns	Array of SqlFilterRulePattern objects	Concurrency control rules of SQL statements.

**Table 6** SqlFilterRulePattern
Parameter	Type	Description
pattern	String	A concurrency control rule of SQL statements.
max_concurrency	Integer	Maximum number of concurrent SQL statements.

Status code: 400

**Table 7** Response body parameters
Parameter	Type	Description
error_code	String	Error code.
error_msg	String	Error message.

Status code: 500

**Table 8** Response body parameters
Parameter	Type	Description
error_code	String	Error code.
error_msg	String	Error message.

Example Request

Querying concurrency control rules of SQL statements

GET https://{endpoint}/v3/054e292c9880d4992f02c0196d3ea468/instance/af315b8e6aaa41799bd9a31f2de15abcin07/sql-filter/rules?node_id=c01a5645eb2c4fb6a9373542f5366e50no07

Example Response

Status code: 200

Success.

{
  "node_id" : "c01a5645eb2c4fb6a9373542f5366e50no07",
  "sql_filter_rules" : [ {
    "sql_type" : "SELECT",
    "patterns" : [ {
      "pattern" : "select~from~t1",
      "max_concurrency" : 0
    }, {
      "pattern" : "select~from~t2~where~id",
      "max_concurrency" : 10
    } ]
  }, {
    "sql_type" : "UDPATE",
    "patterns" : [ {
      "pattern" : "update~t1",
      "max_concurrency" : 0
    }, {
      "pattern" : "update~t2~where~id",
      "max_concurrency" : 10
    } ]
  }, {
    "sql_type" : "DELETE",
    "patterns" : [ {
      "pattern" : "delete~from",
      "max_concurrency" : 0
    } ]
  } ]
}