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Fix virtual columns for prewhere with aliases.

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This commit is contained in:
Nikolai Kochetov 2018-09-06 20:45:49 +03:00
parent 0cb7947835
commit 641771f66f
2 changed files with 14 additions and 5 deletions
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11
dbms/src/Interpreters/ExpressionAnalyzer.cpp
View File

@ -201,7 +201,16 @@ ExpressionAnalyzer::ExpressionAnalyzer(
}
if (storage && source_columns.empty())
source_columns = storage->getColumns().getAllPhysical();
{
auto physical_columns = storage->getColumns().getAllPhysical();
if (source_columns.empty())
source_columns.swap(physical_columns);
else
{
source_columns.insert(source_columns.end(), physical_columns.begin(), physical_columns.end());
removeDuplicateColumns(source_columns);
}
}
else
removeDuplicateColumns(source_columns);

8
dbms/src/Interpreters/InterpreterSelectQuery.cpp
View File

@ -677,8 +677,6 @@ void InterpreterSelectQuery::executeFetchColumns(
/// Separate expression for columns used in prewhere.
auto required_prewhere_columns_expr_list = std::make_shared<ASTExpressionList>();
/// Columns which we will get after prewhere execution.
auto source_columns = storage->getColumns().getAllPhysical();
for (const auto & column : required_columns)
{
@ -701,6 +699,8 @@ void InterpreterSelectQuery::executeFetchColumns(
required_columns_expr_list->children.emplace_back(std::move(column_expr));
}
/// Columns which we will get after prewhere execution.
NamesAndTypesList additional_source_columns;
/// Add columns which will be added by prewhere (otherwise we will remove them in project action).
for (const auto & column : prewhere_actions_result)
{
@ -708,10 +708,10 @@ void InterpreterSelectQuery::executeFetchColumns(
continue;
required_columns_expr_list->children.emplace_back(std::make_shared<ASTIdentifier>(column.name));
source_columns.emplace_back(column.name, column.type);
additional_source_columns.emplace_back(column.name, column.type);
}
alias_actions = ExpressionAnalyzer(required_columns_expr_list, context, nullptr, source_columns).getActions(true);
alias_actions = ExpressionAnalyzer(required_columns_expr_list, context, storage, additional_source_columns).getActions(true);
/// The set of required columns could be added as a result of adding an action to calculate ALIAS.
required_columns = alias_actions->getRequiredColumns();