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28 lines
594 B
C++
28 lines
594 B
C++
#pragma once
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#include <DB/Storages/IStorage.h>
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#include <DB/Interpreters/Context.h>
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namespace DB
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{
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class ASTIdentifier;
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/** Позволяет добавить или удалить столбец в таблице.
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*/
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class InterpreterAlterQuery
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{
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public:
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InterpreterAlterQuery(ASTPtr query_ptr_, Context & context_);
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void execute();
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private:
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void dropColumnFromAST(const ASTIdentifier & drop_column, ASTs & columns);
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void addColumnToAST(StoragePtr table, ASTs & columns, const ASTPtr & add_column_ptr, const ASTPtr & after_column_ptr);
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ASTPtr query_ptr;
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Context context;
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};
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}
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