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Added processing stage check for StorageMerge. [#CLICKHOUSE-3694] #2156

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This commit is contained in:
Nikolai Kochetov 2018-06-25 15:47:10 +03:00
parent 4f7c284d34
commit 60f0ed9296
1 changed files with 13 additions and 4 deletions
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17
dbms/src/Storages/StorageMerge.cpp
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@ -171,11 +171,20 @@ BlockInputStreams StorageMerge::read(
const ASTPtr & query = query_info.query;
/// If PREWHERE is used in query, you need to make sure that all tables support this.
if (typeid_cast<const ASTSelectQuery &>(*query).prewhere_expression)
for (const auto & elem : selected_tables)
for (const auto & elem : selected_tables)
{
/// Check processing stage again in case new table was added after getQueryProcessingStage call.
auto stage = elem.first->getQueryProcessingStage(context);
if (stage != processed_stage)
throw Exception("Source tables for Merge table are processing data up to different stages",
ErrorCodes::INCOMPATIBLE_SOURCE_TABLES);
/// If PREWHERE is used in query, you need to make sure that all tables support this.
if (typeid_cast<const ASTSelectQuery &>(*query).prewhere_expression)
if (!elem.first->supportsPrewhere())
throw Exception("Storage " + elem.first->getName() + " doesn't support PREWHERE.", ErrorCodes::ILLEGAL_PREWHERE);
throw Exception("Storage " + elem.first->getName() + " doesn't support PREWHERE.",
ErrorCodes::ILLEGAL_PREWHERE);
}
Block virtual_columns_block = getBlockWithVirtualColumns(selected_tables);