--主键,复合主键createtableexample (id numberprimarykey, name varchar2(20));createtableexample1 (id number, name varchar2(20),primarykey(id));createtableexample2 (id number, name varchar2(20));ALTERTABLEexample2ADDPRIMARYKEY (ID)createtableexample3 (id number,name varchar2(20) ,primarykey ...
CREATETABLEexample(idNUMBER,c1BOOLEAN,c2BOOL); 将以下行插入到 example 中: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 INSERTINTOexampleVALUES(1,TRUE,NULL);INSERTINTOexampleVALUES(2,FALSE,true); INSERTINTOexampleVALUES(3,0,'off'); INSERTINTOexampleVALUES(4,'no','yes'); INSERTINTOexample...
create table student ( id number, name varchar2(20), gender char(2), age number, addr varchar2(80) ); create table 表名 ( 字段1 类型1, 字段2 类型2, 字段3 类型3, ... 字段n 类型n ); 对表结构的修改: alter table student add dept varchar2(20); --增加字段 alter table student m...
create pluggable database PDBSAMPLE admin user lhr identified by lhr CREATE_FILE_DEST = '/u01/app/oracle/oradata'; alter pluggable database PDBSAMPLE open; alter session set container=PDBLHR1; CREATE TABLESPACE example NOLOGGING DATAFILE '/u04/oradata/CDBLHR/PDBLHR1/example01.dbf' SIZE 100M...
### **建表语句** ```SQL CREATE TABLE example_table ( ID bigint NOT NULL AUTO_INCREMENT, VARCHAR_COLUMN VARCHAR(255) NOT NULL, VARCHAR_CLM2 VARCHAR(25) DEF 占用空间 时间戳 字符串 原创 A开头非中介暂用昵称 2023-11-03 14:14:45 ...
CREATE TABLE http://download.oracle.com/docs/cd/E11882_01/server.112/e17118/statements_7002.htm#SQLRF01402 表空间(tableSpace) 段(segment) 盘区(extent) 块(block) 关系 一. Storage 参数说明 1. INITIAL Specify the size of the first extent of the object. Oracle allocates spac...
CREATETABLEtable_name( ... )TABLESPACEtablespace_name;Code language:SQL (Structured Query Language)(sql) Note that you must have privilege on the tablespace that you specify in theCREATE TABLEstatement. Consider the following example. First,create a new tablecalledt1whose tablespace istbs1: ...
Example:做一个日志用来记录scott用户的一些操作: 首先在sysdba权限下建立日志表,序列,触发器: CREATE TABLE object_log( logid NUMBER CONSTRAINT pk_logid PRIMARY KEY, operatedate DATE NOT NULL, objecttype VARCHAR2(50) NOT NULL, objectowner VARCHAR2(50) NOT NULL );CREATE SEQUENCE obj_log_seq;CREAT...
Oracle CREATE TABLE statement example# First, connect to the Oracle Database server using SQL*Plus or SQL Developer. Second, execute the following statement to create a new table: CREATETABLEinvoices ( invoice_noNUMBERPRIMARYKEY, invoice_dateDATENOTNULL, ...
CREATE TABLESPACE tbs_example DATAFILE 'C:oracleoradatamydbtbs01.dbf' SIZE 100M AUTOEXTEND ON NEXT 10M MAXSIZE UNLIMITED EXTENT MANAGEMENT LOCAL SEGMENT SPACE MANAGEMENT AUTO; 上述语句创建了一个名为"tbs_example"的表空间。它包含一个数据文件"tbs01.dbf",初始大小为100M,每次增长10M,最大大小不限制...