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Better UNION ALL: development #1947

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This commit is contained in:
Alexey Milovidov 2018-02-26 13:19:47 +03:00
parent b5610b9f81
commit 417cc7f6e2
1 changed files with 2 additions and 4 deletions
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6
dbms/src/Interpreters/InterpreterSelectQuery.cpp
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@ -1,5 +1,3 @@
#include <optional>
#include <DataStreams/ExpressionBlockInputStream.h>
#include <DataStreams/FilterBlockInputStream.h>
#include <DataStreams/LimitBlockInputStream.h>
@ -516,7 +514,7 @@ static void getLimitLengthAndOffset(ASTSelectQuery & query, size_t & length, siz
QueryProcessingStage::Enum InterpreterSelectQuery::executeFetchColumns(Pipeline & pipeline)
{
/// The subquery interpreter, if the subquery
std::optional<InterpreterSelectWithUnionQuery> interpreter_subquery;
std::unique_ptr<InterpreterSelectWithUnionQuery> interpreter_subquery;
/// List of columns to read to execute the query.
Names required_columns = query_analyzer->getRequiredSourceColumns();
@ -573,7 +571,7 @@ QueryProcessingStage::Enum InterpreterSelectQuery::executeFetchColumns(Pipeline
subquery_settings.extremes = 0;
subquery_context.setSettings(subquery_settings);
interpreter_subquery.emplace(
interpreter_subquery = std::make_unique<InterpreterSelectWithUnionQuery>(
query_table, subquery_context, required_columns, QueryProcessingStage::Complete, subquery_depth + 1);
/// If there is an aggregation in the outer query, WITH TOTALS is ignored in the subquery.