private PrimaryKey FetchPrimary(int tableId)
{
var indexRows = ConstraintInformation
.Where(x => x.Index.object_id == tableId && x.Index.is_primary_key.Equals("True", StringComparison.OrdinalIgnoreCase))
.GroupBy(x => x.Index.name);
var index = indexRows.FirstOrDefault();
if (index != null)
{
var resultIndex = index.FirstOrDefault()?.Index;
if (resultIndex != null)
{
resultIndex.Columns = index.ToList().OrderBy(x => x.IndexColumn.key_ordinal)
.Select(x => x.SystemColumn.name)
.Aggregate((x, y) => x + "|" + y).Trim('|');
}
var primaryKeys = resultIndex.MapTo <PrimaryKey>();
var constraint = KeyConstraints.FirstOrDefault(x => x.name == primaryKeys.Name);
if (constraint != null)
{
primaryKeys.is_system_named = constraint.is_system_named;
}
return(primaryKeys);
}
return(null);
}
private List <Index> FetchIndexes(int tableId)
{
var indexRows = ConstraintInformation
.Where(x => x.Index.object_id == tableId && x.Index.is_primary_key.Equals("False", StringComparison.OrdinalIgnoreCase))
.GroupBy(x => x.Index.name);
var existsIndex = new List <Index>();
foreach (var index in indexRows)
{
var resultIndex = index.FirstOrDefault()?.Index;
if (resultIndex != null)
{
resultIndex.Columns = index.ToList().OrderBy(x => x.IndexColumn.key_ordinal)
.Select(x => x.SystemColumn.name)
.Aggregate((x, y) => x + "|" + y).Trim('|');
}
existsIndex.Add(resultIndex);
}
return(existsIndex);
}
