Oracle中处理duplicate的SQL技巧 在Oracle中处理重复数据的SQL技巧有以下几种方法: 使用DISTINCT关键字:可以通过在SELECT语句中使用DISTINCT关键字来去除重复的数据行。 SELECTDISTINCTcolumn1, column2FROMtable_name; 使用ROW_NUMBER()函数和Common Table Expressions(CTE):可以使用ROW_NUMBER()函数和CTE来为数据行添加行...
SELECTf.*,COUNT(*)OVER(PARTITIONBYfruit_name, color) cFROMfruits f;Code language:SQL (Structured Query Language)(sql) In this query, we added anOVER()clause after theCOUNT(*)and placed a list of columns, which we checked for duplicate values, after a partition by clause. The partition ...
createtabletest(mcvarchar2(60));insertintotestvalues('112233445566778899');insertintotestvalues('22113344 5566778899');insertintotestvalues('33112244 5566778899');insertintotestvalues('44112233 5566 778899');insertintotestvalues('5511 2233 4466778899');insertintotestvalues('661122334455778899');insertintotes...
insert into test values('eeaabbccdd'); insert into test values('ab123'); insert into test values('123xy'); insert into test values('007ab'); insert into test values('abcxy'); insert into test values('The final test is is is how to find duplicate words.'); commit; 一、REGEXP_L...
这里展示的是xml格式的日志,跟.log并无区别。 或者11g可以通过 adrci 命令 代码语言:javascript 代码运行次数:0 运行 AI代码解释 oracle@entel2:[/oracle]$adrciADRCI:Release11.2.0.4.0-Production on Wed Nov3020:56:282016Copyright(c)1982,2011,Oracle and/or its affiliates.All rights reserved.ADRbase="/...
suppressing the display of duplicate values for a given column skipping a line each time a given column value changes printing computed figures each time a given column value changes or at the end of the report Enter BREAK with no clauses to list the current BREAK definition. Where report...
insert into TEST (MC) values ('abcxy'); insert into TEST (MC) values ('The final test is is is how to find duplicate words.'); commit; select 1,'^[:digit:]',mc from test where regexp_like(mc,'^[:digit:]')--以':digit'中的任何一个字符开头的字符串 union select 2,'[^[:...
insert into tab1 (id,name) select id,name_2 from tab2 on duplicate key update = tab2.name_2; 以上的一条语句就可以完成这个工作,根据主键或者唯一索引,来判断重复的数据,并紧紧进行更新,否则就插入tab1中在tab2中不存在的数据。 对比SQL SERVER , MySQL在这项工作中显然是要方便的多。
Caused by: java.sql.SQLException: ORA-01289: cannot add duplicate logfile +DATA/jxr2p/onlinelog/group_4.294.1016480325 ORA-06512: at "SYS.DBMS_LOGMNR", line 68 ORA-06512: at line 1 at oracle.jdbc.driver.T4CTTIoer11.processError(T4CTTIoer11.java:509) at oracle.jdbc.driver.T4CTTIoer11...
SQL>select*from v$option where parameter='Oracle Database Vault';PARAMETERVALUECON_ID---Oracle Database VaultFALSE0 Values的值为false,表示未启用。如果为true,表示已启用。 11. 查看是否安装OJVM组件 代码语言:javascript 代码运行次数:0 运行 AI代码解释 SELECTversion...