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SQL Reference

Data Definition Language (DDL) Statement Reference

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DDL statements allow users to run commands and administrative operations on the Ocient® System. You can execute DDL statements over a database connection to manage nodes, storage spaces, tables and views, system configuration, users and groups, underlying storage segments, and more.

Quoting Identifiers

In all DDL statements, identifiers not in double quotes must begin with a letter and can only contain letters, numbers, and underscores. Identifiers are the names of databases, tables, nodes, and so on. For details, see Identifiers. The Ocient System internally converts identifiers to lower-case. Identifiers in double quotes can contain any characters besides newline and carriage return, can begin with any character, and are not case-adjusted. To use an identifier with the same name as any keyword, it must be in double quotes.

String literals must be enclosed in single quotes. A single quote within a string can be escaped as ”.A string literal can be preceded by e to enable additional escape sequences (for example: e'\n').

DDL statements are supported for these categories:

Cluster and Node Management

  • CLUSTER
    • CREATE CLUSTER
    • DROP CLUSTER
    • ALTER CLUSTER
      • ALTER CLUSTER ADD PARTICIPANTS
      • ALTER CLUSTER DROP PARTICIPANTS
      • ALTER CLUSTER ALTER CONFIG SET
      • ALTER CLUSTER ALTER LOG LEVEL SET
      • ALTER CLUSTER RENAME
  • STORAGESPACE
    • CREATE STORAGESPACE
    • DROP STORAGESPACE
    • ALTER STORAGESPACE RENAME
  • NODE
    • DROP NODE
    • ALTER NODE
      • ALTER NODE ADD ROLE
      • ALTER NODE REMOVE ROLE
      • ALTER NODE ALTER CONFIG SET
      • ALTER NODE RENAME
      • ALTER NODE ALTER LOG LEVEL SET
      • ALTER NODE ALTER METRIC LEVEL
      • ALTER NODE SET ADDRESS
  • CONNECTIVITY POOL
    • CREATE CONNECTIVITY_POOL
    • DROP CONNECTIVITY_POOL
    • ALTER CONNECTIVITY_POOL
      • ALTER CONNECTIVITY_POOL SET
      • ALTER CONNECTIVITY_POOL RENAME TO
      • ALTER CONNECTIVITY_POOL ADD PARTICIPANTS
      • ALTER CONNECTIVITY_POOL ALTER PARTICIPANT
      • ALTER CONNECTIVITY_POOL DROP PARTICIPANTS
      • ALTER CONNECTIVITY_POOL SET SSO INTEGRATION
      • ALTER CONNECTIVITY_POOL REMOVE SSO INTEGRATION
  • SSO INTEGRATION
    • CREATE SSO INTEGRATION
    • DROP SSO INTEGRATION
    • ALTER SSO INTEGRATION
  • SYSTEM
    • ALTER SYSTEM ALTER CONFIG SET
    • ALTER SYSTEM RENAME TO
    • ALTER SYSTEM ALTER METRIC LEVEL
    • ALTER SYSTEM ALTER SECURITY

Schemas

  • CREATE SCHEMA
  • DROP SCHEMA
  • ALTER SCHEMA RENAME

Databases

  • CREATE DATABASE
  • DROP DATABASE
  • ALTER DATABASE
    • ALTER DATABASE RENAME
    • ALTER DATABASE SET SSO INTEGRATION
    • ALTER DATABASE ALTER SSO INTEGRATION
    • ALTER DATABASE REMOVE SSO INTEGRATION
    • ALTER DATABASE ALTER SECURITY

Tables

  • CREATE TABLE
  • CREATE TABLE AS SELECT (CTAS)
  • CREATE TABLE AS SELECT USING LOADERS
  • DROP TABLE
  • ALTER TABLE
    • ALTER TABLE RENAME
    • ALTER TABLE RENAME COLUMN
    • ALTER TABLE ADD COLUMN
    • ALTER TABLE ALTER COLUMN COMPRESSION
    • ALTER TABLE ALTER REDUNDANCY
    • ALTER TABLE DROP COLUMN
    • ALTER TABLE STREAMLOADER_PROPERTIES
    • ALTER TABLE DISABLE INDEX
    • ALTER TABLE ENABLE INDEX
    • ALTER TABLE ENABLE RETENTION POLICY AGE
    • ALTER TABLE DISABLE RETENTION POLICY
  • DELETE FROM TABLE
  • EXPORT TABLE
  • INSERT INTO TABLE
    • INSERT INTO TABLE USING LOADERS
  • TRUNCATE TABLE

Views

  • CREATE VIEW
  • DROP VIEW
  • ALTER VIEW RENAME
  • ALTER VIEW AS
  • EXPORT VIEW

Indexes

  • CREATE INDEX
  • DROP INDEX

Data Pipelines

  • PIPELINE
    • CREATE PIPELINE
    • DROP PIPELINE
    • PREVIEW PIPELINE
    • START PIPELINE
    • STOP PIPELINE
    • ALTER PIPELINE
    • ALTER PIPELINE RENAME
    • EXPORT PIPELINE
    • CREATE PIPELINE FUNCTION
    • DROP PIPELINE FUNCTION

Distributed Tasks

  • TASK
    • CREATE TASK
    • CANCEL TASK

Machine Learning Models

  • CREATE MLMODEL
  • ALTER MLMODEL
  • DROP MLMODEL
  • EXPORT MLMODEL
  • REFRESH MLMODEL

Users, Groups, and Service Classes

  • USER
    • CREATE USER
    • DROP USER
    • ALTER USER
      • ALTER USER SET
  • GROUP
    • CREATE GROUP
    • DROP GROUP
    • ALTER GROUP
      • ALTER GROUP USER
      • ALTER GROUP RENAME
      • ALTER GROUP SET SERVICE CLASS
      • ALTER GROUP ALTER SECURITY
  • SERVICE CLASS
    • CREATE SERVICE CLASS
    • DROP SERVICE CLASS
    • ALTER SERVICE CLASS
      • ALTER SERVICE CLASS RENAME
      • ALTER SERVICE CLASS SET
      • ALTER SERVICE CLASS RESET
    • ALTER QUERY

Data Integrity and Storage

  • ALTER SEGMENT QUARANTINE

Query Analysis

  • EXPLAIN
  • EXPLAIN PIPELINE

Query Management

  • CANCEL
  • KILL

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