ClickHouse

1
#include "GatherUtils.h"
2
#include "Selectors.h"
3
#include "Algorithms.h"
4

5
namespace DB::GatherUtils
6
{
7

8
namespace
9
{
10

11
struct ArrayPush : public ArrayAndValueSourceSelectorBySink<ArrayPush>
12
{
13
    template <typename ArraySource, typename ValueSource, typename Sink>
14
    static void selectArrayAndValueSourceBySink(
15
            ArraySource && array_source, ValueSource && value_source, Sink && sink, bool push_front)
16
    {
17
        if (push_front)
18
            concat(value_source, array_source, sink);
19
        else
20
            concat(array_source, value_source, sink);
21
    }
22
};
23

24
}
25

26
void push(IArraySource & array_source, IValueSource & value_source, IArraySink & sink, bool push_front)
27
{
28
    ArrayPush::select(sink, array_source, value_source, push_front);
29
}
30
}
31