ClickHouse/dbms/Interpreters/InterpreterUseQuery.cpp

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#include <Parsers/ASTUseQuery.h>
#include <Interpreters/Context.h>
#include <Interpreters/InterpreterUseQuery.h>
#include <Access/AccessFlags.h>
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#include <Common/typeid_cast.h>
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namespace DB
{
BlockIO InterpreterUseQuery::execute()
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{
const String & new_database = query_ptr->as<ASTUseQuery &>().database;
context.checkAccess(AccessType::SHOW_DATABASES, new_database);
context.getSessionContext().setCurrentDatabase(new_database);
return {};
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}
}