ORA-00918错误是Oracle数据库中的一个常见错误,其完整错误信息为“column ambiguously defined”,意为“列定义不明确”。这个错误通常发生在执行SQL查询时,当查询中的SELECT子句、ORDER BY子句、GROUP BY子句或其他相关子句中引用了多个表中具有相同名称的列,而查询又没有明确指出要引用哪个表的列时,就会触发此错误。
column ambiguously defined ORA-00918: column ambiguously defined java.sql.SQLException: ORA-00918: column ambiguously defined ORA-00918: column ambiguously defined。中文名称:未明确定义的列! 可能定义了两个相同的列 你找找你后面的t里面是不是有两个相同的列,我也是这个问题,就是多了一个相同的列的查询,...
column ambiguously defined ORA-00918: column ambiguously defined java.sql.SQLException: ORA-00918: column ambiguously defined ORA-00918: column ambiguously defined。中文名称:未明确定义的列! 可能定义了两个相同的列 你找找你后面的t里面是不是有两个相同的列,我也是这个问题,就是多了一个相同的列的查询,...
NativeMe The problem can be simplified as this: select1x,2yfromdualwhere1=0union all(select1a,2afromdual fetch first row only ); This raises the same ORA-00918 error, and in my opinion, is a bug in Oracle'sFETCH FIRSTimplementation...
ORA-00918:column ambiguously defined ORA-00918:column ambiguously defined. 原因:使用相同的列被定义重复 SQL>select 1 as cc ,2 as cc from dual; SQL>select * from (select 1 as ,2 as cc from dual); 解决办法:把相同的列名改成不同的列名...
Using Oracle 12C 12.1.0 with latest EF Core 3.1 provider I am mapping to an existing user/schema/database (: and are not in charge of it. I have a contact person that have a contact type. I only have navigation to the ContactType When I ...
java.sql.SQLException: ORA-00918: column ambiguously defined ORA-00918: column ambiguously defined。中文名称:未明确定义的列! 可能定义了两个相同的列 你找找你后面的t里面是不是有两个相同的列,我也是这个问题,就是多了一个相同的列的查询,所以sb了.. ...
Solved: Hi, I am getting "Oracle: ORA-00918: column ambiguously defined" error while loading data using the Direct Query option from the
Error "ORA-00918: column ambiguously defined" Using Custom SQL | Tableau Software Considering you noted it works fine in a different tool there might be a little bit more going on here. It looks like null hit the nail on the head with a similar issue someone else was havin...
当两表联合查询,选择的列在两表都存在时,就会出现此错,如: SQL> select id 2 from emp a,dept b 3 where a.deptid=b.id; select id * 第 1 行出现错误: ORA-00918: 未明确定义列 以上SQL中,由于id在两表都存在,