Ed's solution is clearly superior(!), if, your admin team will install it. In some cases, your admin may not wish to do so. In such cases, the below 'self-service' method will work. :-) --- Mark E. Sunderlin Solutions Architect |AOL Core Data Technologies P: 703-265-6935 |C: 540-327-6222 | AIM: MESunderlin 22000 AOL Way | Dulles, VA | 20166
-----Original Message----- From: Edward Capriolo [mailto:edlinuxg...@gmail.com] Sent: Thursday, October 18, 2012 12:13 PM To: user@hive.apache.org Subject: Re: why I get Table not found 'dual' That way works but if someone accidentally adds a second row or deletes the first row dual stops working right. This was why I wrote dual input format. It always works right regardless if the table has data. Edward On Thu, Oct 18, 2012 at 12:09 PM, Sunderlin, Mark <mark.sunder...@teamaol.com> wrote: > I creates a single column, single row table called 'dual' > > > 1. Create a text file on HDFS, call it a.txt with just the letter 'a' > (or any single character in it) > 2. Create the single column table, dual: 'create table dual (x, string);' > 3. Load the text file into dual: load data local inpath '... /a.txt' > overwrite into table dual; (replace '...' with the path to the HDFS > directory you created a.txt in) > 4. Enjoy using it just like you do in Oracle: select > parse_url('http://autos.aol.com/gallery/best-trucks-fuel-economy/', 'HOST') > from dual > > A quick AOL search and I see this guy did pretty much the same: > > http://bigdatadw.blogspot.com/2012/02/dual-table-in-hive.html > > --- > Mark E. Sunderlin > Solutions Architect |AOL Core Data Technologies > P: 703-265-6935 |C: 540-327-6222 | AIM: MESunderlin > 22000 AOL Way | Dulles, VA | 20166 > > -----Original Message----- > From: Kaufman Ng [mailto:kauf...@cloudera.com] > Sent: Thursday, October 18, 2012 9:45 AM > To: user@hive.apache.org > Cc: fellowtree > Subject: Re: why i get Table not found 'dual' > > The 'dual' table is a feature in Oracle only I believe. > > There's an open Jira for this. You can try Edward Capriolo's project > (described in the jira) which allows you to use dual. > https://issues.apache.org/jira/browse/HIVE-1558 > > On Thu, Oct 18, 2012 at 2:29 AM, MiaoMiao <liy...@gmail.com> wrote: >> Do you even have a table name 'dual' or not? >> >> On Thu, Oct 18, 2012 at 2:24 PM, fellowtree <fellowt...@163.com> wrote: >>> hi all: >>> some one said hive support sql like select if(1=2,100,200) >>> from dual; however i always get Table not found 'dual' . my hive is >>> 0.9.0 and what is the reason? >>> >>> ________________________________ >>> fellowtree
