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39 lines
1.1 KiB
C++
39 lines
1.1 KiB
C++
#pragma once
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#include <DataStreams/IBlockOutputStream.h>
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#include <DataStreams/BlockIO.h>
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#include <Interpreters/Context.h>
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#include <Interpreters/IInterpreter.h>
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#include <Parsers/ASTInsertQuery.h>
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namespace DB
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{
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/** Interprets the INSERT query.
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*/
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class InterpreterInsertQuery : public IInterpreter
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{
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public:
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InterpreterInsertQuery(const ASTPtr & query_ptr_, const Context & context_, bool allow_materialized_ = false);
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/** Prepare a request for execution. Return block streams
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* - the stream into which you can write data to execute the query, if INSERT;
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* - the stream from which you can read the result of the query, if SELECT and similar;
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* Or nothing if the request INSERT SELECT (self-sufficient query - does not accept the input data, does not return the result).
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*/
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BlockIO execute() override;
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private:
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StoragePtr getTable(const ASTInsertQuery & query);
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Block getSampleBlock(const ASTInsertQuery & query, const StoragePtr & table);
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void checkAccess(const ASTInsertQuery & query);
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ASTPtr query_ptr;
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const Context & context;
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bool allow_materialized;
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};
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}
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