CREATETABLEschema_name.table_name ( column_1 data_type column_constraint, column_2 data_type column_constraint, ... table_constraint );Code language:SQL (Structured Query Language)(sql) In this syntax: First, specify the table name and schema name to which the new table belongs on theCREATE...
postgres=# create or replace trigger modify_stu before insert on studentfor each rowdeclarenext_id number;begin select seq_test.nextval into next_id from dual; :new.id :=next_id;end;/ERROR: syntax error at or near "trigger"LINE 1: create or replace trigger modify_stu 五、游标CURSOR...
(2). For UNIFORM extent management, the number of extents is determined from initial segment size and the uniform extent size specified at tablespace creation time. For example, in a uniform locally managed tablespace with 1M extents, if you specify an INITIAL value of 5M, then Oracle creates ...
ERROR: syntax error at or near "REVERSE"LINE 1: create index reverse_index on product(name) REVERSE;postgres=# create index reverse_index on product(name desc);CREATE INDEX5）基于函数的索引：基于函数的索引适用于某个字段做查询的时候经常带函数操作，openGauss中可以支持基于函数的索引。postgres=# ...
1.create tablespaces sql> create tablespace tablespace_name datafile 'c:\oracle\oradata\file1.dbf' size 100m, sql> 'c:\oracle\oradata\file2.dbf' size 100m minimum extent 550k [logging/nologging] sql> default storage (initial 500k next 500k maxextents 500 pctinccease 0) ...
Oracle Database SQL Language Referencefor TRUNCATE TABLE syntax and semantics 假设一个事务将行插入到段中。数据库必须分配一组块来容纳这些行。已分配的块在HWM之下。数据库格式化该组中的一个位图块来容纳元数据,但不会预格式化组中其余的块。 在图12-24中,HWM之下的块是已分配的,而HWM之上的块是既未分配...
postgres=# CREATE TABLE t_hash_partition(deptno NUMBER, deptname VARCHAR(32)) PARTITION BY HASH(deptno) (PARTITION p1 TABLESPACE pg_default, PARTITION p2 TABLESPACE pg_default, PARTITION p3 TABLESPACE pg_default, PARTITION p4 TABLESPACE pg_default); ERROR: syntax error at or near "HASH...
Wrong syntax inhosts fileand also due to the the tnslsnr process was enhanced in 10.1.0.3 to support FAN(Fast Application Notification) via ONS (Oracle Notification Services). This new code opens a socket open on localhost. Therefore"localhost" should be defined on the system. ...
tablespace tablespace_name[ppctfree integer][pctused integer][initrans integer][maxtrans integer]storage( initial 200knext200k ppctincrease0maxextents50)[logging | nologging][cache | nocaahe]2.复制一个已存在的表(copy an existingtable)createtabletable_name[logging | nologging]assubquery3.创建一个临...
Type -h or --help at the command prompt to get syntax help. 您现已在 Oracle 数据库中具有一个地理数据库。 将创建地理数据库的相关消息写入 sde_setup.log 文件,该文件是在为运行脚本的计算机上的 TEMP 或 TMP 变量指定的目录中创建的。如果在创建地理数据库时出现任何问题,可查看此日志文件以解决这些...