ClickHouse/dbms/src/Interpreters/InterpreterUseQuery.cpp

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#include <Parsers/ASTUseQuery.h>
#include <Interpreters/Context.h>
#include <Interpreters/InterpreterUseQuery.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 = typeid_cast<const ASTUseQuery &>(*query_ptr).database;
context.getSessionContext().setCurrentDatabase(new_database);
return {};
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}
}