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36 lines
967 B
C++
36 lines
967 B
C++
#pragma once
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#include <Parsers/IAST.h>
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#include <Interpreters/Cluster.h>
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namespace DB
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{
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struct Settings;
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class Context;
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class Cluster;
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struct SelectQueryInfo;
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class Pipe;
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using Pipes = std::vector<Pipe>;
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namespace ClusterProxy
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{
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class IStreamFactory;
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/// removes different restrictions (like max_concurrent_queries_for_user, max_memory_usage_for_user, etc.)
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/// from settings and creates new context with them
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Context removeUserRestrictionsFromSettings(const Context & context, const Settings & settings);
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/// Execute a distributed query, creating a vector of BlockInputStreams, from which the result can be read.
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/// `stream_factory` object encapsulates the logic of creating streams for a different type of query
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/// (currently SELECT, DESCRIBE).
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Pipes executeQuery(
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IStreamFactory & stream_factory, const ClusterPtr & cluster,
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const ASTPtr & query_ast, const Context & context, const Settings & settings, const SelectQueryInfo & query_info);
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}
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}
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