SQL 命令参考 下面是 HashData 中支持的SQL命令： SQL语法概要 ABORT ALTER AGGREGATE ALTER CONVERSION ALTER DATABASE ALTER DOMAIN ALTER EXTENSION ALTER EXTERNAL TABLE ALTER FILESPACE ALTER FUNCTION ALTER GROUP ALTER INDEX ALTER LANGUAGE ALTER OPERATOR ALTER OPERATOR CLASS ALTER PROTOCOL ALTER RESOURCE QUEUE ALTER ROLE ALTER SCHEMA ALTER SEQUENCE ALTER TABLE ALTER TABLESPACE ALTER TYPE ALTER USER ANALYZE BEGIN CHECKPOINT CLOSE CLUSTER COMMENT COPY CREATE AGGREGATE CREATE CAST CREATE CONVERSION CREATE DATABASE CREATE DOMAIN CREATE EXTENSION CREATE EXTERNAL TABLE CREATE FUNCTION CREATE GROUP CREATE INDEX CREATE LANGUAGE CREATE OPERATOR CREATE OPERATOR CLASS CREATE OPERATOR FAMILY CREATE PROTOCOL CREATE RESOURCE QUEUE CREATE ROLE CREATE RULE CREATE SCHEMA CREATE SEQUENCE CREATE TABLE CREATE TABLE AS CREATE TABLESPACE CREATE TYPE CREATE USER CREATE VIEW DEALLOCATE DECLARE DELETE DISCARD DO DROP AGGREGATE DROP CAST DROP CONVERSION DROP DATABASE DROP DOMAIN DROP EXTENSION DROP EXTERNAL TABLE DROP FILESPACE DROP FUNCTION DROP GROUP DROP INDEX DROP LANGUAGE DROP OPERATOR DROP OPERATOR CLASS DROP OPERATOR FAMILY DROP OWNED DROP PROTOCOL DROP RESOURCE QUEUE DROP ROLE DROP RULE DROP SCHEMA DROP SEQUENCE DROP TABLE DROP TABLESPACE DROP TYPE DROP USER DROP VIEW END EXECUTE EXPLAIN FETCH GRANT INSERT LOAD LOCK MOVE PREPARE REASSIGN OWNED REINDEX RELEASE SAVEPOINT RESET REVOKE ROLLBACK ROLLBACK TO SAVEPOINT SAVEPOINT SELECT SELECT INTO SET SET ROLE SET SESSION AUTHORIZATION SET TRANSACTION SHOW START TRANSACTION TRUNCATE UPDATE VACUUM VALUES 上级主题：HashData 数据库参考指南