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# null.h File Reference

Declares classes that implement SQL "null" semantics within C++'s type system. More...

`#include "exceptions.h"`
`#include <iostream>`

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## Namespaces

namespace | mysqlpp

## Detailed Description

Declares classes that implement SQL "null" semantics within C++'s type system.

This is required because C++'s own NULL type is not semantically the same as SQL nulls.