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07-24-2017
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Title | Views | Posted |
---|---|---|
9656 | 11-28-2017 04:14 PM | |
6784 | 11-28-2017 11:27 AM |
11-28-2017
04:14 PM
1 Kudo
You can change the default query options via impalad command line options: -default_query_options='PARQUET_FALLBACK_SCHEMA_RESOLUTION=name' The same can be done in Cloudera Manager: https://www.cloudera.com/documentation/enterprise/5-12-x/topics/impala_config_options.html
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11-28-2017
11:27 AM
1 Kudo
You can create a table with a text column first, and then use to_timestamp to convert it into a table with a timestamp column. create table timestamp_table as select column_1, column_2, to_timestamp(column_3, "dd/MM/yyyy HH:mm") from text_table; For documentations on timestamp-related functions, please visit https://impala.apache.org/docs/build/html/topics/impala_datetime_functions.html
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11-27-2017
02:29 PM
The standard timestamp format is"yyyy-MM-dd HH:mm:ss[.SSSSSS]". Is there any warning printed when selecting from this table? Could you share a sample row in the text file?
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