本文整理汇总了C++中NAColumn::isPrimaryKey方法的典型用法代码示例。如果您正苦于以下问题：C++ NAColumn::isPrimaryKey方法的具体用法？C++ NAColumn::isPrimaryKey怎么用？C++ NAColumn::isPrimaryKey使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类NAColumn的用法示例。
在下文中一共展示了NAColumn::isPrimaryKey方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: isKeyColumnValue
// is this BaseColumn a primary or partitioning key and is val a single
// value or a constant that can be safely coerced to BaseColumn's type?
NABoolean BaseColumn::isKeyColumnValue(ItemExpr& val) const
{
NAColumn *baseCol = getNAColumn();
return
(baseCol != NULL &&
(baseCol->isPrimaryKey() || baseCol->isPartitioningKey()) &&
canSafelyCoerce(val));
}示例2: setPrimaryKeyColumns
// this method sets the primary key columns. It goes through all the columns
// of the table, and collects the columns which are marked as primary keys
void TableDesc::setPrimaryKeyColumns()
{
ValueIdSet primaryColumns;
for ( CollIndex j = 0 ; j < colList_.entries() ; j++ )
{
ValueId valId = colList_[j];
NAColumn *column = valId.getNAColumn();
if ( column->isPrimaryKey() )
{
primaryColumns.insert(valId) ;
// mark column as referenced for histogram, as we may need its histogram
// during plan generation
if ((column->isUserColumn() || column->isSaltColumn() ) &&
(column->getNATable()->getSpecialType() == ExtendedQualName::NORMAL_TABLE) )
column->setReferencedForMultiIntHist();
}
}
primaryKeyColumns_ = primaryColumns;
}