/// <summary>
/// This is internal API and is not intended for use by Linq To DB applications.
/// It may change or be removed without further notice.
/// </summary>
public static SqlField GetIdentityField(this SqlStatement statement)
{
return(statement.GetInsertClause()?.Into.GetIdentityField());
}
/// <summary>
/// This is internal API and is not intended for use by Linq To DB applications.
/// It may change or be removed without further notice.
/// </summary>
public static bool IsUpdate(this SqlStatement statement)
{
return(statement != null && statement.QueryType == QueryType.Update);
}
/// <summary>
/// This is internal API and is not intended for use by Linq To DB applications.
/// It may change or be removed without further notice.
/// </summary>
public static bool IsInsert(this SqlStatement statement)
{
return
(statement.QueryType == QueryType.Insert ||
statement.QueryType == QueryType.InsertOrUpdate);
}
/// <summary>
/// This is internal API and is not intended for use by Linq To DB applications.
/// It may change or be removed without further notice.
/// </summary>
public static bool NeedsIdentity(this SqlStatement statement)
{
return(statement.QueryType == QueryType.Insert && ((SqlInsertStatement)statement).Insert.WithIdentity);
}
public SelectQueryOptimizer(SqlProviderFlags flags, SqlStatement statement, SelectQuery selectQuery)
{
_flags = flags;
_selectQuery = selectQuery;
_statement = statement;
}