SingleStore Managed Service

exec

HTTP Method

Endpoint URL

Description

POST

/api/v1/exec

Executes a SQL statement without returning result sets; typically used for executing DDL and DML statements for which result sets are not expected, such as CREATE TABLE and INSERT statements.

Request Headers

Header

Description

Authorization

Specifies the authentication information of the user agent. This must be set to Basic followed by a space and then by the Base-64 encoded username:password string. For example, the Authorization header of demo:Afu4XjzB1ns would appear as follows.

Authorization: Basic ZGVtbzpBZnU0WGp6QjFucw==

Content-Type

Represents the media type (MIME) of the body of the request and must be set to application/json.

Request Body

The request body is a JSON object that specifies the SQL statement to execute and the statement context.

Field

Type

Description

sql

String

The SQL statement to execute.

args

Array

(Optional) A list of arguments to be used in the SQL statement. The command uses question marks (?) for placeholders, which will be replaced by the specified arguments during execution. The command must have exactly as many placeholders as arguments, or the request will fail. Example:

{"sql": "INSERT INTO tbl (col1, col2) VALUES (?, ?)", "args": ["Hello", 2]}

args[x]

Any

(Optional) An argument to be used in the command. This argument will be parsed into a golang type based on the default JSON parsing rules and then passed to the go sql driver for safe interpolation.

database

String

(Optional) The database on which the SQL statement must be executed.

Response

For successful requests, the response will be a JSON object in the message body along with the HTTP status code 200 OK.

Field

Type

Description

lastInsertId

Integer

The last value inserted into an AUTO_INCREMENT column if applicable to the SQL statement.

rowsAffected

Integer

The number of rows affected by the SQL statement.

On request failure, an HTTP status code corresponding to the error will be returned. See HTTP API Error Handling for more information.

Examples (Shell)
Create a database
Request Data
{"sql": "CREATE DATABASE publications"}
HTTP Request
curl -H "Content-Type: application/json" --data '{"sql": "CREATE DATABASE publications"}' http://svc-10444e3f-afeb-46be-b186-a8c64b99f726-dml.aws-ireland-1.svc.singlestore.com/api/v1/exec
HTTP Response
{
  "lastInsertId": 0,
  "rowsAffected": 1
} 
Create a table
Request Data
{"sql": "CREATE TABLE authors(author_id INT AUTO_INCREMENT PRIMARY KEY, author_name VARCHAR(50) NOT NULL, bio VARCHAR(255))", "database": "publications"}
HTTP Request
curl -H "Content-Type: application/json" --data '{"sql": "CREATE TABLE authors(author_id INT AUTO_INCREMENT PRIMARY KEY, author_name VARCHAR(50) NOT NULL, bio VARCHAR(255))", "database": "publications"}' http://svc-10444e3f-afeb-46be-b186-a8c64b99f726-dml.aws-ireland-1.svc.singlestore.com/api/v1/exec
HTTP Response
{
  "lastInsertId": 0,
  "rowsAffected": 0
} 
Insert values into a table
Request Data
{"sql": "INSERT INTO authors (author_name) VALUES (?), (?), (?)", "args": ["Kegan Roslyn", "Toby Lynsey", "Lacey Desmond"], "database": "publications"}
HTTP Request
curl -H "Content-Type: application/json" --data '{"sql": "INSERT INTO authors (author_name) VALUES (?), (?), (?)", "args": ["Kegan Roslyn", "Toby Lynsey", "Lacey Desmond"], "database": "publications"}' http://svc-10444e3f-afeb-46be-b186-a8c64b99f726-dml.aws-ireland-1.svc.singlestore.com/api/v1/exec
HTTP Response
{
  "lastInsertId": 1,
  "rowsAffected": 3
} 
Call a stored procedure
Request Data
{"sql": "CALL sample_procedure(?)", "args": ["Crime Thriller"], "database": "publications"}
HTTP Request
curl -H "Content-Type: application/json" --data '{"sql": "CALL sample_procedure(?)", "args": ["Crime Thriller"], "database": "publications"}' http://svc-10444e3f-afeb-46be-b186-a8c64b99f726-dml.aws-ireland-1.svc.singlestore.com/api/v1/exec 
HTTP Response
{
  "lastInsertId": 0,
  "rowsAffected": 0
} 
Supplementary Reference

When using cURL to invoke SingleStore’s HTTP APIs, you can issue the JSON payload of the HTTP POST request from a file instead of providing it directly in the request, as shown below.

Create a table by issuing HTTP POST request’s JSON payload from a file
Request data saved in a JSON file
{
    "sql": "CREATE TABLE reviews(book_title VARCHAR(255) NOT NULL, author_name VARCHAR(50), review JSON NOT NULL)", 
    "database": "publications"
}
HTTP request with the JSON payload issued from the JSON file
/* The JSON payload for the HTTP request is supplied from the exec.json file */

curl -H "Content-Type: application/json" --data '@./exec.json' http://svc-10444e3f-afeb-46be-b186-a8c64b99f726-dml.aws-ireland-1.svc.singlestore.com/api/v1/exec
HTTP response
{
  "lastInsertId": 0,
  "rowsAffected": 0
}