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Fix test.
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f6b9c46d24
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9359ae7650
@ -125,7 +125,21 @@ void CreatingSetsBlockInputStream::createOne(SubqueryForSet & subquery)
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if (!done_with_join)
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{
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subquery.joined_block_actions->execute(block);
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if (subquery.joined_block_actions)
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subquery.joined_block_actions->execute(block);
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for (const auto & name_with_alias : subquery.joined_block_aliases)
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{
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if (block.has(name_with_alias.first))
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{
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auto pos = block.getPositionByName(name_with_alias.first);
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auto column = block.getByPosition(pos);
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block.erase(pos);
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column.name = name_with_alias.second;
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block.insert(std::move(column));
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}
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}
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if (!subquery.join->insertFromBlock(block))
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done_with_join = true;
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}
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@ -453,10 +453,7 @@ void ExpressionAnalyzer::translateQualifiedNamesImpl(ASTPtr & ast, const std::ve
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/// In case if column from the joined table are in source columns, change it's name to qualified.
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if (best_table_pos && source_columns.contains(ast->getColumnName()))
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{
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analyzed_join.duplicate_columns_from_joined_table.insert(ast->getColumnName());
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tables[best_table_pos].makeQualifiedName(ast);
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}
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}
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}
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else if (typeid_cast<ASTQualifiedAsterisk *>(ast.get()))
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@ -1636,8 +1633,8 @@ void ExpressionAnalyzer::makeSetsForIndexImpl(const ASTPtr & node, const Block &
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{
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NamesAndTypesList temp_columns = source_columns;
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temp_columns.insert(temp_columns.end(), array_join_columns.begin(), array_join_columns.end());
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temp_columns.insert(temp_columns.end(), analyzed_join.columns_added_by_join.begin(),
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analyzed_join.columns_added_by_join.end());
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for (const auto & joined_column : analyzed_join.columns_added_by_join)
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temp_columns.push_back(joined_column.name_and_type);
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ExpressionActionsPtr temp_actions = std::make_shared<ExpressionActions>(temp_columns, settings);
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getRootActions(func->arguments->children.at(0), true, false, temp_actions);
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@ -2542,22 +2539,27 @@ void ExpressionAnalyzer::addJoinAction(ExpressionActionsPtr & actions, bool only
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{
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if (only_types)
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actions->add(ExpressionAction::ordinaryJoin(nullptr, analyzed_join.key_names_left,
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analyzed_join.columns_added_by_join));
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analyzed_join.getColumnsAddedByJoin()));
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else
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for (auto & subquery_for_set : subqueries_for_sets)
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if (subquery_for_set.second.join)
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actions->add(ExpressionAction::ordinaryJoin(subquery_for_set.second.join, analyzed_join.key_names_left,
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analyzed_join.columns_added_by_join));
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analyzed_join.getColumnsAddedByJoin()));
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}
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void ExpressionAnalyzer::AnalyzedJoin::createJoinedBlockActions(
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const ASTTablesInSelectQueryElement & join,
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const Context & context)
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void ExpressionAnalyzer::AnalyzedJoin::createJoinedBlockActions(const ASTSelectQuery * select_query,
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const Context & context)
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{
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const auto & join_params = static_cast<const ASTTableJoin &>(*join.table_join);
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const auto & table_to_join = static_cast<const ASTTableExpression &>(*join.table_expression);
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const auto joined_table_name = getTableNameWithAliasFromTableExpression(table_to_join, context);
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if (!select_query)
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return;
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const ASTTablesInSelectQueryElement * join = select_query->join();
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if (!join)
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return;
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const auto & join_params = static_cast<const ASTTableJoin &>(*join->table_join);
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/// Create custom expression list with join keys from right table.
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auto expression_list = std::make_shared<ASTExpressionList>();
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@ -2567,18 +2569,34 @@ void ExpressionAnalyzer::AnalyzedJoin::createJoinedBlockActions(
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for (const auto & join_right_key : key_asts_right)
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children.emplace_back(join_right_key);
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/// Alias duplicating columns.
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for (const auto & name : duplicate_columns_from_joined_table)
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{
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auto identifier = std::make_shared<ASTIdentifier>(name);
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identifier->setAlias(joined_table_name.getQualifiedNamePrefix() + name);
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children.emplace_back(std::move(identifier));
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}
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NameSet required_columns_set(key_names_right.begin(), key_names_right.end());
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for (const auto & joined_column : columns_added_by_join)
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required_columns_set.insert(joined_column.original_name);
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ExpressionAnalyzer analyzer(expression_list, context, nullptr, columns_from_joined_table, key_names_right);
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required_columns_set.insert(key_names_right.begin(), key_names_right.end());
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required_columns_from_joined_table.insert(required_columns_from_joined_table.end(),
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required_columns_set.begin(), required_columns_set.end());
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ExpressionAnalyzer analyzer(expression_list, context, nullptr, columns_from_joined_table, required_columns_from_joined_table);
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joined_block_actions = analyzer.getActions(false);
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for (const auto & column_required_from_actions : joined_block_actions->getRequiredColumns())
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if (!required_columns_set.count(column_required_from_actions))
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required_columns_from_joined_table.push_back(column_required_from_actions);
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}
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NamesAndTypesList ExpressionAnalyzer::AnalyzedJoin::getColumnsAddedByJoin() const
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{
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NamesAndTypesList result;
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for (const auto & joined_column : columns_added_by_join)
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result.push_back(joined_column.name_and_type);
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return result;
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}
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bool ExpressionAnalyzer::appendJoin(ExpressionActionsChain & chain, bool only_types)
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{
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assertSelect();
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@ -2644,29 +2662,35 @@ bool ExpressionAnalyzer::appendJoin(ExpressionActionsChain & chain, bool only_ty
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else
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table = table_to_join.subquery;
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auto required_source_columns = analyzed_join.joined_block_actions->getRequiredColumns();
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NameSet required_source_columns_set(required_source_columns.begin(), required_source_columns.end());
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for (const auto & right_key : analyzed_join.key_names_right)
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required_source_columns_set.insert(right_key);
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for (auto & type_name : analyzed_join.columns_added_by_join)
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required_source_columns_set.insert(type_name.name);
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required_source_columns.clear();
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required_source_columns.reserve(required_source_columns_set.size());
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required_source_columns.insert(required_source_columns.end(),
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required_source_columns_set.begin(), required_source_columns_set.end());
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auto interpreter = interpretSubquery(table, context, subquery_depth, required_source_columns);
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auto interpreter = interpretSubquery(table, context, subquery_depth, analyzed_join.required_columns_from_joined_table);
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subquery_for_set.source = std::make_shared<LazyBlockInputStream>(
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interpreter->getSampleBlock(),
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[interpreter]() mutable { return interpreter->execute().in; });
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}
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/// TODO You do not need to set this up when JOIN is only needed on remote servers.
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/// Alias duplicating columns.
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for (const auto & joined_column : analyzed_join.columns_added_by_join)
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{
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const auto & qualified_name = joined_column.name_and_type.name;
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if (joined_column.original_name != qualified_name)
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subquery_for_set.joined_block_aliases.emplace_back(joined_column.original_name, qualified_name);
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}
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auto sample_block = subquery_for_set.source->getHeader();
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analyzed_join.joined_block_actions->execute(sample_block);
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for (const auto & name_with_alias : subquery_for_set.joined_block_aliases)
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{
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if (sample_block.has(name_with_alias.first))
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{
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auto pos = sample_block.getPositionByName(name_with_alias.first);
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auto column = sample_block.getByPosition(pos);
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sample_block.erase(pos);
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column.name = name_with_alias.second;
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sample_block.insert(std::move(column));
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}
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}
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/// TODO You do not need to set this up when JOIN is only needed on remote servers.
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subquery_for_set.join = join;
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subquery_for_set.join->setSampleBlock(sample_block);
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subquery_for_set.joined_block_actions = analyzed_join.joined_block_actions;
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@ -2958,12 +2982,14 @@ void ExpressionAnalyzer::collectUsedColumns()
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for (auto it = analyzed_join.columns_added_by_join.begin(); it != analyzed_join.columns_added_by_join.end();)
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{
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if (required_joined_columns.count(it->name))
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if (required_joined_columns.count(it->name_and_type.name))
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++it;
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else
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analyzed_join.columns_added_by_join.erase(it++);
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}
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analyzed_join.createJoinedBlockActions(select_query, context);
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/// Some columns from right join key may be used in query. This columns will be appended to block during join.
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for (const auto & right_key_name : analyzed_join.key_names_right)
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if (required_joined_columns.count(right_key_name))
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@ -3222,9 +3248,6 @@ void ExpressionAnalyzer::collectJoinedColumns(NameSet & joined_columns)
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else if (table_join.on_expression)
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collectJoinedColumnsFromJoinOnExpr();
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analyzed_join.createJoinedBlockActions(*node, context);
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analyzed_join.joined_block_actions->execute(nested_result_sample);
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/// When we use JOIN ON syntax, non_joined_columns are columns from join_key_names_left,
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/// because even if a column from join_key_names_right, we may need to join it if it has different name.
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/// If we use USING syntax, join_key_names_left and join_key_names_right are almost the same, but we need to use
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@ -3237,14 +3260,20 @@ void ExpressionAnalyzer::collectJoinedColumns(NameSet & joined_columns)
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const auto & col = nested_result_sample.safeGetByPosition(i);
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if (not_joined_columns.end() == std::find(not_joined_columns.begin(), not_joined_columns.end(), col.name))
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{
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if (joined_columns.count(col.name)) /// Duplicate columns in the subquery for JOIN do not make sense.
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auto name = col.name;
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/// Change name for duplicate column form joined table.
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if (source_columns.contains(name))
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name = joined_table_name.getQualifiedNamePrefix() + name;
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if (joined_columns.count(name)) /// Duplicate columns in the subquery for JOIN do not make sense.
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continue;
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joined_columns.insert(col.name);
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joined_columns.insert(name);
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bool make_nullable = settings.join_use_nulls && (table_join.kind == ASTTableJoin::Kind::Left ||
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table_join.kind == ASTTableJoin::Kind::Full);
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analyzed_join.columns_added_by_join.emplace_back(col.name, make_nullable ? makeNullable(col.type) : col.type);
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auto type = make_nullable ? makeNullable(col.type) : col.type;
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analyzed_join.columns_added_by_join.emplace_back(NameAndTypePair(name, std::move(type)), col.name);
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}
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}
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}
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@ -52,7 +52,10 @@ struct SubqueryForSet
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/// If set, build it from result.
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SetPtr set;
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JoinPtr join;
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/// Apply this actions to joined block.
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ExpressionActionsPtr joined_block_actions;
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/// Rename column from joined block from this list.
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NamesWithAliases joined_block_aliases;
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/// If set, put the result into the table.
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/// This is a temporary table for transferring to remote servers for distributed query processing.
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@ -243,19 +246,33 @@ private:
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ASTs key_asts_left;
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ASTs key_asts_right;
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/// This columns will be renamed to alias.column or database.table.column
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NameSet duplicate_columns_from_joined_table;
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/// All columns which can be read from right table.
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struct JoinedColumn
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{
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/// Column will be joined to block.
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NameAndTypePair name_and_type;
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/// original column name from joined source.
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String original_name;
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JoinedColumn(const NameAndTypePair & name_and_type_, const String & original_name_)
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: name_and_type(name_and_type_), original_name(original_name_) {}
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};
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using JoinedColumnsList = std::list<JoinedColumn>;
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/// All columns which can be read from joined table.
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NamesAndTypesList columns_from_joined_table;
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/// Columns which will be used in query to the joined query.
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Names required_columns_from_joined_table;
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/// Columns which will be added to block, possible including some columns from right join key.
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NamesAndTypesList columns_added_by_join;
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JoinedColumnsList columns_added_by_join;
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/// Such columns will be copied from left join keys during join.
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NameSet columns_added_by_join_from_right_keys;
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/// Actions which need to be calculated on joined block.
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ExpressionActionsPtr joined_block_actions;
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void createJoinedBlockActions(const ASTTablesInSelectQueryElement & join,
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const Context & context);
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void createJoinedBlockActions(const ASTSelectQuery * select_query, const Context & context);
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NamesAndTypesList getColumnsAddedByJoin() const;
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};
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AnalyzedJoin analyzed_join;
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