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Improved exception message [#METR-20762].

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This commit is contained in:
Alexey Milovidov 2016-04-06 03:31:22 +03:00
parent 3973277936
commit b0e9fd6da3
1 changed files with 16 additions and 4 deletions
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20
dbms/src/Storages/MergeTree/MergeTreeDataSelectExecutor.cpp
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@ -182,14 +182,26 @@ BlockInputStreams MergeTreeDataSelectExecutor::read(
data.check(real_column_names);
processed_stage = QueryProcessingStage::FetchColumns;
PKCondition key_condition(query, context, available_real_and_virtual_columns, data.getSortDescription());
PKCondition date_condition(query, context, available_real_and_virtual_columns, SortDescription(1, SortColumnDescription(data.date_column_name, 1)));
SortDescription sort_descr = data.getSortDescription();
PKCondition key_condition(query, context, available_real_and_virtual_columns, sort_descr);
PKCondition date_condition(query, context, available_real_and_virtual_columns,
SortDescription(1, SortColumnDescription(data.date_column_name, 1)));
if (settings.force_primary_key && key_condition.alwaysUnknownOrTrue())
throw Exception("Primary key is not used and setting 'force_primary_key' is set.", ErrorCodes::INDEX_NOT_USED);
{
std::stringstream exception_message;
exception_message << "Primary key (";
for (size_t i = 0, size = sort_descr.size(); i < size; ++i)
exception_message << (i == 0 ? "" : ", ") << sort_descr[i].column_name;
exception_message << ") is not used and setting 'force_primary_key' is set.";
throw Exception(exception_message.str(), ErrorCodes::INDEX_NOT_USED);
}
if (settings.force_index_by_date && date_condition.alwaysUnknownOrTrue())
throw Exception("Index by date is not used and setting 'force_index_by_date' is set.", ErrorCodes::INDEX_NOT_USED);
throw Exception("Index by date (" + data.date_column_name + ") is not used and setting 'force_index_by_date' is set.",
ErrorCodes::INDEX_NOT_USED);
/// Выберем куски, в которых могут быть данные, удовлетворяющие date_condition, и которые подходят под условие на _part,
/// а также max_block_number_to_read.