olap

In Big Query there is a function array_concat_agg that aggregates array fields by concatenating the arrays. In Snowflake there is a flatten function that can unnest nested arrays into single array. I am looking for similar functionality in duckdb.

select flatten([[1, 2], [2, 3], [4, 5]] would return [1, 2, 2, 3, 4, 5]
I would also need a distinct option:
`select flatten(DISTINCT [[1, 2],

Proposed changes

Doris's Routine Load realizes the import of data from Kafka to Doris, and make a feature of real-time synchronization of data from Pulsar to Doris based on Pulsar IO.

1. The custom abstract class DorisAbstractSink implements the interface org.apache.pulsar.io.core.Sink.

2. The DorisGenericRecordSink class inherits the abstract class DorisAbstractSink, and the speci

Use case:
Postgres compatible tools like Datagrip, DBeaver, etc. want to get (and sometimes set e.g. Azure Data Studio) the datestyle used by the database. It seems like there is already some implementation for that.

Feature description:
As a db tool engineer I want to be able to fetch the set datestyle of a database to be know how to interpret dates in my tool.

extra: ability

Hey everyone!

mapd-core-cpu is already available on conda-forge (https://anaconda.org/conda-forge/omniscidb-cpu)

now we should add some instructions on the documentation.

at this moment it is available for linux and osx.

some additional information about the configuration:

1. for now, always install omniscidb-cpu inside a conda environment (also it is a good practice), eg:

I thought the size of std::bitset<16> is 2 bytes, but it turns out it's 8 bytes

#include <bitset>
#include <iostram>

int main() {
    std::cout << sizeof(std::bitset<2>) << std::endl;
    std::cout << sizeof(std::bitset<8>) << std::endl;
    std::cout << sizeof(std::bitset<16>) << std::endl;
    std::cout << sizeof(std::bitset<32>) << std::endl;
    std::cout << sizeof(std::bitset

Is your feature request related to a problem or challenge? Please describe what you are trying to do.

Follow up for apache/arrow-datafusion#1712 (comment).

The Dataframe trait was introduced in order to have two separate Dataframe implementation in Datafusion and Ballista. Since then, the design has changed and we are sharing the same dataframe imple

https://github.com/risinglightdb/risinglight/blob/7b5bc7a1a258afd64a483990ca95f4c799482791/src/storage/secondary/version_manager.rs#L258-L263

Currently, users will need to manually call pin and unpin. If there are futures cancelled or somehow, it is possible that we fail to unpin by ourselves.

We should implement a struct called Version, and implement Drop for it. pin will return a

Is there an existing issue for the same bug?

• I have checked the existing issues.

Is your feature request related to a problem?

No response

Describe the solution you'd like

now([fsp])

Returns the current date and time as a value in 'YYYY-MM-DD hh:mm:ss' or YYYYMMDDhhmmss format, depending on whether the function is used in string or numeric context. The value i