custom cassandra / cqlsh time_format

问题

System:

CentOS 6.7 x86_64 cqlsh 5.0.1 | Cassandra 2.2.1 | CQL spec 3.3.0

I'm having problem inserting (copy csv file) timestamp field with the format '%d-%m-%Y %H:%M:%S' ,

This format not supported by default, so I've created it manually in the ~/.cassandra/cqlshrc file:

[ui]
time_format = %d-%m-%Y %H:%M:%S

and started cqlsh again, but I'm still unable to insert:

system@cqlsh> insert into nir.nir_test (END_DATE) values ('01-09-2015 18:55:50');

InvalidRequest: code=2200 [Invalid query] message="Unable to coerce '01-09-2015 18:55:50' to a formatted date (long)"

Any advice?

回答1:

The [ui] configuration in cqlshrc only affects the output format. It gets applied when you query a timestamp column. For example:

select END_DATE from nir.nir_test;

Might output:

 end_date
---------------------
 01-09-2015 18:55:50

But for insertion, you need to use one of the specified formats. For example:

insert into nir.nir_test (END_DATE) values ('2015-09-01 18:55:50');

This probably means that you'll need to convert the timestamps in the CSV file before trying to insert them.

来源：https://stackoverflow.com/questions/32496272/custom-cassandra-cqlsh-time-format