ClickHouse/src/Storages/System/StorageSystemWarnings.cpp

#include <Interpreters/Context.h>
#include <Storages/System/StorageSystemWarnings.h>

namespace DB
{
NamesAndTypesList StorageSystemWarnings::getNamesAndTypes()
{
    return {
        {"message", std::make_shared<DataTypeString>()},
    };
}

void StorageSystemWarnings::fillData(MutableColumns & res_columns, ContextPtr context, const SelectQueryInfo &) const
{
    for (const auto & warning : context->getWarnings())
        res_columns[0]->insert(warning);
}

}