Hive UDF converting structs to JSON strings

2013-08-15 Thread Sha Liu
values are just concatenated together (at least for Hive 0.9.0 that I'm using). For my case it is relevantly easy to construct JSON strings by myself, but I wonder if there is a more standardized way to do so. Thanks, Sha Liu

RE: Multiple Insert with Where Clauses

2013-08-02 Thread Sha Liu
the "where clause" not be supported with that syntax? something's rotten in denmark there with your query. what version of hive are you seeing this on? On Tue, Jul 30, 2013 at 9:34 PM, Sha Liu wrote: Doesn't INSERT INTO do what you said? I'm not sure

RE: Multiple Insert with Where Clauses

2013-07-30 Thread Sha Liu
, then you can insert a whole partition at a time instead of the table. Thanks,Brad On Tue, Jul 30, 2013 at 9:04 PM, Sha Liu wrote: Yes for the example you gave, it works. It even works when there is a single insert under the from clause, but there there are multiple inserts, the where cl

RE: Multiple Insert with Where Clauses

2013-07-30 Thread Sha Liu
...@radiumone.com To: user@hive.apache.org Have you simply tried INSERT OVERWRITE TABLE destination SELECT col1, col2, col3FROM sourceWHERE col4 = 'abc' Thanks! On Tue, Jul 30, 2013 at 8:25 PM, Sha Liu wrote: Hi Hive Gurus, When using the Hive extension of multiple inserts, can we

Multiple Insert with Where Clauses

2013-07-30 Thread Sha Liu
col3='xyz' The underlined parts didn't cause any errors, but they didn't seem to be effective either (I'm using Hive 0.9). Note that the columns used in the Where clauses are not among the selected ones, but I'm not sure if that is important. Is this kind of operations supported? Thanks,Sha Liu

Select columns listed in another table

2013-07-05 Thread Sha Liu
steps. We can run a select query on the 2nd table (column names) to get the column list, and generate another Hive query based on this list, but this approach needs to run two separate queries. Are there more efficient ways of achieving the same? Thanks,Sha Liu

Run queries from external files as subqueries

2013-06-20 Thread Sha Liu
ns or just run by themselves. Thanks,Sha Liu