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Revert "Fixed error [#CLICKHOUSE-3888]"
This reverts commit 1d8302a4d7
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@ -901,8 +901,6 @@ void ExpressionAnalyzer::addASTAliases(ASTPtr & ast, int ignore_levels)
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aliases[alias] = ast;
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}
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else if (auto subquery = typeid_cast<ASTSubquery *>(ast.get()))
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{
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if (subquery->alias.empty())
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{
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/// Set unique aliases for all subqueries. This is needed, because content of subqueries could change after recursive analysis,
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/// and auto-generated column names could become incorrect.
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@ -920,7 +918,6 @@ void ExpressionAnalyzer::addASTAliases(ASTPtr & ast, int ignore_levels)
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subquery->prefer_alias_to_column_name = true;
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aliases[alias] = ast;
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}
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}
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}
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@ -1564,7 +1561,7 @@ void ExpressionAnalyzer::makeSetsForIndexImpl(const ASTPtr & node, const Block &
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}
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void ExpressionAnalyzer::makeSet(const ASTFunction * node, const Block & sample_block, bool no_subqueries)
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void ExpressionAnalyzer::makeSet(const ASTFunction * node, const Block & sample_block)
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{
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/** You need to convert the right argument to a set.
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* This can be a table name, a value, a value enumeration, or a subquery.
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@ -1577,16 +1574,6 @@ void ExpressionAnalyzer::makeSet(const ASTFunction * node, const Block & sample_
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if (prepared_sets.count(arg->range))
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return;
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if (no_subqueries)
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{
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String set_id = arg->getColumnName();
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SubqueryForSet & subquery_for_set = subqueries_for_sets[set_id];
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SetPtr set = std::make_shared<Set>(SizeLimits(settings.max_rows_in_set, settings.max_bytes_in_set, settings.set_overflow_mode), false);
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subquery_for_set.set = set;
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prepared_sets[arg->range] = set;
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return;
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}
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/// If the subquery or table name for SELECT.
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const ASTIdentifier * identifier = typeid_cast<const ASTIdentifier *>(arg.get());
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if (typeid_cast<const ASTSubquery *>(arg.get()) || identifier)
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@ -1594,7 +1581,7 @@ void ExpressionAnalyzer::makeSet(const ASTFunction * node, const Block & sample_
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/// We get the stream of blocks for the subquery. Create Set and put it in place of the subquery.
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String set_id = arg->getColumnName();
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/// A special case if the name of the table is specified on the right side of the IN statement,
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/// A special case is if the name of the table is specified on the right side of the IN statement,
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/// and the table has the type Set (a previously prepared set).
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if (identifier)
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{
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@ -2094,12 +2081,32 @@ void ExpressionAnalyzer::getActionsImpl(const ASTPtr & ast, bool no_subqueries,
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}
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if (functionIsInOrGlobalInOperator(node->name))
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{
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if (!no_subqueries)
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{
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/// Let's find the type of the first argument (then getActionsImpl will be called again and will not affect anything).
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getActionsImpl(node->arguments->children.at(0), no_subqueries, only_consts, actions_stack, projection_manipulator);
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getActionsImpl(node->arguments->children.at(0), no_subqueries, only_consts, actions_stack,
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projection_manipulator);
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/// Transform tuple or subquery into a set.
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makeSet(node, actions_stack.getSampleBlock(), no_subqueries);
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makeSet(node, actions_stack.getSampleBlock());
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}
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else
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{
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if (!only_consts)
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{
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/// We are in the part of the tree that we are not going to compute. You just need to define types.
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/// Do not subquery and create sets. We insert an arbitrary column of the correct type.
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ColumnWithTypeAndName fake_column;
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fake_column.name = projection_manipulator->getColumnName(getColumnName());
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fake_column.type = std::make_shared<DataTypeUInt8>();
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fake_column.column = fake_column.type->createColumn();
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actions_stack.addAction(ExpressionAction::addColumn(fake_column, projection_manipulator->getProjectionSourceColumn(), false));
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getActionsImpl(node->arguments->children.at(0), no_subqueries, only_consts, actions_stack,
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projection_manipulator);
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}
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return;
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}
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}
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/// A special function `indexHint`. Everything that is inside it is not calculated
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@ -336,7 +336,7 @@ private:
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void optimizeIfWithConstantConditionImpl(ASTPtr & current_ast);
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bool tryExtractConstValueFromCondition(const ASTPtr & condition, bool & value) const;
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void makeSet(const ASTFunction * node, const Block & sample_block, bool no_subqueries);
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void makeSet(const ASTFunction * node, const Block & sample_block);
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/// Adds a list of ALIAS columns from the table.
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void addAliasColumns();
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@ -467,7 +467,8 @@ void InterpreterSelectQuery::executeImpl(Pipeline & pipeline, const BlockInputSt
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if (expressions.prewhere_info)
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pipeline.streams.back() = std::make_shared<FilterBlockInputStream>(
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pipeline.streams.back(), expressions.prewhere_info->prewhere_actions,
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expressions.prewhere_info->prewhere_column_name, expressions.prewhere_info->remove_prewhere_column);
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expressions.prewhere_info->prewhere_column_name, expressions.prewhere_info->remove_prewhere_column
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);
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}
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else
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{
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@ -8,17 +8,13 @@ void ASTSubquery::appendColumnNameImpl(WriteBuffer & ostr) const
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{
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/// This is a hack. We use alias, if available, because otherwise tree could change during analysis.
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if (!alias.empty())
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{
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writeString(alias, ostr);
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}
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else
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{
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Hash hash = getTreeHash();
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writeCString("__subquery_", ostr);
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writeText(hash.first, ostr);
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ostr.write('_');
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writeText(hash.second, ostr);
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}
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}
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void ASTSubquery::formatImplWithoutAlias(const FormatSettings & settings, FormatState & state, FormatStateStacked frame) const
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@ -22,8 +22,6 @@
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#include <Parsers/parseQuery.h>
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#include <Parsers/ASTLiteral.h>
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#include <Parsers/ASTExpressionList.h>
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#include <Parsers/ASTTablesInSelectQuery.h>
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#include <Parsers/ASTDropQuery.h>
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#include <Interpreters/InterpreterSelectQuery.h>
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#include <Interpreters/InterpreterAlterQuery.h>
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@ -41,7 +39,10 @@
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#include <Poco/DirectoryIterator.h>
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#include <memory>
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#include <boost/filesystem.hpp>
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#include <Parsers/ASTTablesInSelectQuery.h>
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#include <Parsers/ASTDropQuery.h>
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namespace DB
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@ -258,8 +259,8 @@ BlockInputStreams StorageDistributed::read(
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Block header = materializeBlock(InterpreterSelectQuery(query_info.query, context, Names{}, processed_stage).getSampleBlock());
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ClusterProxy::SelectStreamFactory select_stream_factory = remote_table_function_ptr
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? ClusterProxy::SelectStreamFactory(
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ClusterProxy::SelectStreamFactory select_stream_factory = remote_table_function_ptr ?
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ClusterProxy::SelectStreamFactory(
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header, processed_stage, remote_table_function_ptr, context.getExternalTables())
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: ClusterProxy::SelectStreamFactory(
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header, processed_stage, QualifiedTableName{remote_database, remote_table}, context.getExternalTables());
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