Обсуждение: How to convert this mysql syntax

> I thought that SQL was nomalized but when I tried this wmysql code

SQL is mostly normalized, but every database seems to bring in its own
incompatibilities.
>
> With PostGreSQL it doesn't work.

It is probably a MySQL extension.

>
>
>
>
>
> //Select database
>
>
>
> m_pDb.Execute( "USE dbBornes;" );

Try:
m_pDb.Execute( "connect dbBornes;" );

>
>
>
> // Create table
>
> csSql.Format( "CREATE TABLE %s(", m_DbTable );
>
> csSql += _T( "UserID     INTEGER    NOT NULL AUTO_INCREMENT,"    );
>
> csSql += _T( "Time       DATETIME  NOT NULL,"  );
>
> csSql += _T( "NumSerie   INTEGER    NOT NULL," );
>
> csTmp.Format( "%s VARCHAR(64),", im->first );
>
> csSql += _T( "PRIMARY KEY(UserID))" );
>
>

--- markw@mohawksoft.com wrote:

> > I thought that SQL was nomalized but when I tried
> this wmysql code
>
> SQL is mostly normalized, but every database seems
> to bring in its own
> incompatibilities.
> >
> > With PostGreSQL it doesn't work.
>
> It is probably a MySQL extension.
>
> >
> >
> >
> >
> >
> > //Select database
> >
> >
> >
> > m_pDb.Execute( "USE dbBornes;" );
>
> Try:
> m_pDb.Execute( "connect dbBornes;" );
>
> >
> >
> >
> > // Create table
> >
> > csSql.Format( "CREATE TABLE %s(", m_DbTable );
> >
> > csSql += _T( "UserID     INTEGER    NOT NULL
> > AUTO_INCREMENT,"    );

csSql += _T( "UserID     SERIAL    NOT NULL,"    );

> >
> > csSql += _T( "Time       DATETIME  NOT NULL,"  );

csSql += _T( "Time       TIMESTAMP  NOT NULL,"  );

> >
> > csSql += _T( "NumSerie   INTEGER    NOT NULL," );
> >
> > csTmp.Format( "%s VARCHAR(64),", im->first );
> >
> > csSql += _T( "PRIMARY KEY(UserID))" );

http://www.postgresql.org/docs/8.0/interactive/datatype.html

> >
> >
>
>
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> > > csSql += _T( "UserID     INTEGER    NOT NULL
> > > AUTO_INCREMENT,"    );
>
> csSql += _T( "UserID     SERIAL    NOT NULL,"    );
>
or,
csSql += _T( "UserID     SERIAL    PRIMARY KEY,"    );

Primary keys get the not null automatically.  Serial, by the way, is
just shorthand for defaulting the primary key to a value pulled from a
sequence.  It as a non standard extension just like AUTO_INCREMENT is,
but it is a *much* better abstraction of an incrementing key.

Merlin