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#ifndef PG_COLUMN_H
#define PG_COLUMN_H
#include "pq-helpers.h"
#include <column.h>
#include <cstring>
#include <libpq-fe.h>
namespace PQ {
class SelectBase;
class Column : public DB::Column {
public:
Column(const SelectBase *, unsigned int field);
[[nodiscard]] bool isNull() const override;
void apply(DB::HandleField &) const override;
protected:
const char * value() const;
std::size_t length() const;
const SelectBase * sc;
const Oid oid;
// Buffer for PQunescapeBytea
struct Buffer {
using BufPtr = std::unique_ptr<unsigned char, pq_deleter<PQfreemem>>;
size_t row {};
size_t length {};
BufPtr data;
};
mutable Buffer buffer;
};
}
#endif
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