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oracle的常用sql 表的新增，修改，唯一，索引，主键，备注

1.创建表 create table APP21 (   id         VARCHAR2(20) not null,   aae036     DATE,   nums       NUMBER(14),   sjzt       VARCHAR2(6) default '0' not null,   time       DATE default sysdate not null ) 2.分配表空间 tablespace DATA   p

【2019】OCP 12c 062题库更新大量新题-7

7.daily_ords_lst is created in locally managed tablespace ORDERS_TBS which uses automatic segment space management. CREATE TABLE daily_ords_list (ordno NUMBER, ord_date DATE) PCTFREE 20; Which two are true ? A) 80% of every data block in daily_ords_lst is

Oracle 表的创建 及相关參数

1、 创建表完整语法 CREATE TABLE [schema.]table (column datatype [, column datatype] … ) [TABLESPACE tablespace] [PCTFREE integer] [PCTUSED integer] [INITRANS integer] [MAXTRANS integer] [STORAGE storage-clause] [LOGGING | NOLOGGING] [CACHE | NOC