{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://singlestore.com/schemas/singlestore/query.json",
  "title": "SingleStore Data API Query",
  "description": "Schema representing request and response payloads for the SingleStore Data API, which enables executing SQL statements against a SingleStore Helios workspace over HTTP without requiring a native database driver.",
  "type": "object",
  "required": ["sql"],
  "properties": {
    "sql": {
      "type": "string",
      "description": "The SQL statement to execute against the target workspace database. Supports all SingleStore SQL syntax including DDL, DML, and SELECT statements.",
      "minLength": 1,
      "maxLength": 1048576
    },
    "database": {
      "type": "string",
      "description": "Name of the database to use when executing the statement. If omitted, the default database for the authenticated user is used.",
      "maxLength": 64
    },
    "args": {
      "type": "array",
      "description": "Positional parameter values for parameterized SQL statements. Provide values in the same order as the ? placeholder markers in the sql field.",
      "items": {
        "description": "A single parameter value of any JSON-compatible type."
      }
    }
  },
  "$defs": {
    "ExecResponse": {
      "type": "object",
      "description": "Response returned after successfully executing a DDL or DML SQL statement that does not return a result set.",
      "properties": {
        "results": {
          "type": "array",
          "description": "Array of execution result metadata objects, one per SQL statement executed.",
          "items": {
            "$ref": "#/$defs/ExecResult"
          }
        }
      }
    },
    "ExecResult": {
      "type": "object",
      "description": "Execution result metadata for a single DDL or DML statement.",
      "properties": {
        "lastInsertId": {
          "type": "integer",
          "description": "Auto-increment ID of the last row inserted by an INSERT statement. Only present for INSERT statements on tables with auto-increment primary keys."
        },
        "rowsAffected": {
          "type": "integer",
          "description": "Number of rows affected by the executed INSERT, UPDATE, DELETE, or DDL statement.",
          "minimum": 0
        }
      }
    },
    "QueryRowsResponse": {
      "type": "object",
      "description": "Response returned by the /api/v2/query/rows endpoint containing SELECT query results as an array of row objects.",
      "properties": {
        "results": {
          "type": "array",
          "description": "Array of result sets, one per SQL SELECT statement in the request.",
          "items": {
            "$ref": "#/$defs/RowsResult"
          }
        }
      }
    },
    "RowsResult": {
      "type": "object",
      "description": "A single SELECT statement result set in rows format, where each row is a JSON object with column names as keys.",
      "properties": {
        "rows": {
          "type": "array",
          "description": "Array of row objects where each object maps column names to their corresponding values.",
          "items": {
            "type": "object",
            "additionalProperties": true,
            "description": "A single result row represented as a JSON object mapping column name strings to column values."
          }
        }
      }
    },
    "QueryTuplesResponse": {
      "type": "object",
      "description": "Response returned by the /api/v2/query/tuples endpoint containing SELECT query results as separate columns and value arrays for better performance with large result sets.",
      "properties": {
        "results": {
          "type": "array",
          "description": "Array of result sets, one per SQL SELECT statement in the request.",
          "items": {
            "$ref": "#/$defs/TuplesResult"
          }
        }
      }
    },
    "TuplesResult": {
      "type": "object",
      "description": "A single SELECT statement result set in tuples format, where columns are described once and rows are arrays of values.",
      "properties": {
        "columns": {
          "type": "array",
          "description": "Array of column descriptor objects defining the name and data type of each column in the result set.",
          "items": {
            "$ref": "#/$defs/Column"
          }
        },
        "rows": {
          "type": "array",
          "description": "Array of value arrays where each inner array contains column values in the same order as the columns array.",
          "items": {
            "type": "array",
            "description": "Values for a single result row in column order.",
            "items": {
              "description": "A single column value of any JSON-compatible type including null."
            }
          }
        }
      }
    },
    "Column": {
      "type": "object",
      "description": "Descriptor for a single column returned in a query result set.",
      "required": ["name"],
      "properties": {
        "name": {
          "type": "string",
          "description": "Name of the column as defined in the SQL query or table schema."
        },
        "dataType": {
          "type": "string",
          "description": "SingleStore data type of the column such as INT, BIGINT, VARCHAR, TEXT, DATETIME, FLOAT, or DOUBLE."
        },
        "nullable": {
          "type": "boolean",
          "description": "When true, the column may contain NULL values."
        }
      }
    },
    "DataAPIError": {
      "type": "object",
      "description": "Error response returned by the Data API when a request fails due to invalid SQL, authentication failure, or server error.",
      "properties": {
        "message": {
          "type": "string",
          "description": "Human-readable error message describing why the request failed."
        },
        "code": {
          "type": "integer",
          "description": "HTTP status code associated with the error (400, 401, or 500)."
        }
      }
    }
  }
}