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#pragma once
#include <Interpreters/IInterpreter.h>
#include <Parsers/IAST_fwd.h>
namespace DB
{
class ASTSetQuery;
/** Change one or several settings for the session or just for the current context.
*/
class InterpreterSetQuery : public IInterpreter, WithMutableContext
{
public:
InterpreterSetQuery(const ASTPtr & query_ptr_, ContextMutablePtr context_) : WithMutableContext(context_), query_ptr(query_ptr_) {}
/** Usual SET query. Set setting for the session.
*/
BlockIO execute() override;
/** Set setting for current context (query context).
* It is used for interpretation of SETTINGS clause in SELECT query.
*/
void executeForCurrentContext(bool ignore_setting_constraints = false);
bool supportsTransactions() const override { return true; }
/// To apply SETTINGS clauses from query as early as possible
static void applySettingsFromQuery(const ASTPtr & ast, ContextMutablePtr context_);
private:
ASTPtr query_ptr;
};
}
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