达梦数据库

修改字段类型

ALTER TABLE AAF_CHANGE_HIS MODIFY CREATE_TIME TIMESTAMP WITHOUT TIME ZONE;

添加字段

ALTER TABLE AAF_CHANGE_HIS ADD COLUMN DELETED CHARACTER VARYING(1) NOT NULL DEFAULT '0';

 修改字段名称

ALTER TABLE PENDING_ITEM RENAME COLUMN "CONTEXT" TO "CONTEXT_TEXT";