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Quick fix for initial load of external dictionaries via ODBC

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This commit is contained in:
Alexey Milovidov 2019-07-20 02:06:15 +03:00
parent 175c4655d8
commit 21165edcb7
1 changed files with 5 additions and 1 deletions
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6
dbms/src/Dictionaries/XDBCDictionarySource.cpp
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@ -127,7 +127,11 @@ std::string XDBCDictionarySource::getUpdateFieldAndDate()
else
{
update_time = std::chrono::system_clock::now();
std::string str_time("0000-00-00 00:00:00"); ///for initial load
/// For initial load. We use at least start of unix epoch for compatibility reasons.
/// We use 1970-01-02 instead 1970-01-01, because 1970-01-01 00:00:00 is before unix epoch in some time zones.
std::string str_time("1970-01-02 00:00:00");
return query_builder.composeUpdateQuery(update_field, str_time);
}
}