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'Joan'); insert into t values(1,'Jack'); insert into t values(1,'Tom'); insert into t values(2,'Rose'); insert into t values(2,'Jenny'); column names format a80; select t0.id,merge(cast(multiset(select name from t where t.id = t0.id) as strings...
The username, program, machine, terminal, session id, serial # and more can be found from the v$session view. This view has a column audsid. When you join this coulum to your userenv('sessionid') value, you get the session information for your current session. The query could be SELECT...
AI代码解释 SYS@orclasm>COLUMNFILE_NAMEFORMATa60SYS@orclasm>SELECTTHREAD#,SEQUENCE#,FILE_NAME2FROMDBA_LOGSTDBY_LOGL3WHERENEXT_CHANGE#NOTIN(SELECTFIRST_CHANGE#FROMDBA_LOGSTDBY_LOGWHEREL.THREAD#=THREAD#)4ORDERBYTHREAD#,SEQUENCE#;THREAD#SEQUENCE#FILE_NAME---116/arch/oracle/arch_1_16.arc118/arch/o...
-- 创建表并设置默认值 CREATE TABLE student( ID VARCHAR2(10), NAME VARCHAR2(10), sex VARCHAR2(20), address VARCHAR2(100), registerdate DATE DEFAULT SYSDATE ); -- 修改表名称 rename tablename to newTableName; -- 删除表并重建表 truncate table tablename; -- 添加注释 comment on column ...
Oracle Rename Column The RazorSQL alter table tool includes a Rename Column option for renaming an Oracle database table column. The rename column option allows the user to type in a new name for the column being renamed. The tool then generates and can execute the SQL to rename the column...
You can use ICommand to export, import, rename, clear, and delete items from Oracle BAM ADC. The commands can be contained in an input XML file, or a single command can be entered on the command line. Informational and error messages may be output to either the command window or to ...
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table data first you create orphaned child records. An Oracle database requires that the column specified in the reference table be either a primary key or unique index. You should make sure that the table has no orphaned child records before issuing anALTER TABLE ENABLE CONSTRAINTcommand. ...
1、首先建表语法：Create table 表名，字段 1 数据类型 [default 默认值],字段 2 数据类型 [default 默认值],...字段 n 数据类型 [default 默认值]。2、表删除语法：DROP TABLE 表名。3、表的修改，在sql中使用alter，可以修改表，添加语法：ALTER TABLE 表名称 ADD(列名 1 类型 [DEFAULT ...