public override List <MissingIndexDetails> GetMissingIndexes(string rawPlan)
{
var document = XDocument.Parse(rawPlan);
var missingIndexGroups = document.Descendants(PlanXmlNamespace.WithName("MissingIndexGroup"));
var result = from missingIndexGroup in missingIndexGroups
let missingIndexes = missingIndexGroup.Descendants(PlanXmlNamespace.WithName("MissingIndex"))
let indexes = from missingIndex in missingIndexes
let columnGroups = missingIndex.Descendants(PlanXmlNamespace.WithName("ColumnGroup"))
let equalityColumns = (from columnGroup in columnGroups
where columnGroup.AttributeValue("Usage") == "EQUALITY"
from column in columnGroup.Descendants()
select column.AttributeValue("Name"))
let inequalityColumns = (from columnGroup in columnGroups
where columnGroup.AttributeValue("Usage") == "INEQUALITY"
from column in columnGroup.Descendants()
select column.AttributeValue("Name"))
let includeColumns = (from columnGroup in columnGroups
where columnGroup.AttributeValue("Usage") == "INCLUDE"
from column in columnGroup.Descendants()
select column.AttributeValue("Name"))
select new MissingIndexDetails
{
Impact = Convert.ToDouble(missingIndexGroup.AttributeValue("Impact")),
Database = missingIndex.AttributeValue("Database"),
Table = missingIndex.AttributeValue("Table"),
Schema = missingIndex.AttributeValue("Schema"),
EqualityColumns = new List <string>(equalityColumns),
InequalityColumns = new List <string>(inequalityColumns),
IncludeColumns = new List <string>(includeColumns)
}
from index in indexes
select index;
return(result.ToList());
}
