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CODBCFieldInfo Structure

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The CODBCFieldInfo structure contains information about the fields in an ODBC data source.

Syntax

struct CODBCFieldInfo
{
    CString m_strName;
    SWORD m_nSQLType;
    UDWORD m_nPrecision;
    SWORD m_nScale;
    SWORD m_nNullability;
};

Parameters

m_strName
The name of the field.

m_nSQLType
The SQL data type of the field. This can be an ODBC SQL data type or a driver-specific SQL data type. For a list of valid ODBC SQL data types, see "SQL Data Types" in the Windows SDK. For information about driver-specific SQL data types, see the driver's documentation.

m_nPrecision
The maximum precision of the field. For details, see "Precision, Scale, Length, and Display Size" in the Windows SDK.

m_nScale
The scale of the field. For details, see "Precision, Scale, Length, and Display Size" in the Windows SDK.

m_nNullability
Whether the field accepts a Null value. This can be one of two values: SQL_NULLABLE if the field accepts Null values, or SQL_NO_NULLS if the field does not accept Null values.

Remarks

To retrieve this information, call CRecordset::GetODBCFieldInfo.

Requirements

Header: afxdb.h

See also

Structures, Styles, Callbacks, and Message Maps
CRecordset::GetODBCFieldInfo
CRecordset::GetFieldValue