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#pragma once
#include <Interpreters/IInterpreter.h>
#include <Parsers/IAST_fwd.h>
namespace DB
{
class Context;
/// Returns a list of columns which meet some conditions.
class InterpreterShowColumnsQuery : public IInterpreter, WithMutableContext
{
public:
InterpreterShowColumnsQuery(const ASTPtr & query_ptr_, ContextMutablePtr context_);
BlockIO execute() override;
/// Ignore quota and limits here because execute() produces a SELECT query which checks quotas/limits by itself.
bool ignoreQuota() const override { return true; }
bool ignoreLimits() const override { return true; }
private:
ASTPtr query_ptr;
String getRewrittenQuery();
};
}
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