protected override Expression VisitSubquery(SqlSubqueryExpression subquery)
{
if (subquery.Select != null)
{
Debug.Assert(subquery.Select.Columns.Count == 1);
this.MarkColumnAsUsed(subquery.Select.Alias, subquery.Select.Columns[0].Name);
}
return(base.VisitSubquery(subquery));
}
protected virtual Expression VisitSubquery(SqlSubqueryExpression subquery)
{
var select = (SqlSelectExpression)this.Visit(subquery.Select);
if (select != subquery.Select)
{
return(new SqlSubqueryExpression(subquery.Type, select));
}
return(subquery);
}
protected override Expression VisitSubquery(SqlSubqueryExpression subquery)
{
// Ignore aggregates in sub queries
if (this.hasAggregate || ignoreInSubqueries)
{
return(subquery);
}
return(Visit(subquery));
}
protected override Expression VisitSubquery(SqlSubqueryExpression subquery)
{
var saveOrderings = this.gatheredOrderings;
this.gatheredOrderings = null;
var result = base.VisitSubquery(subquery);
this.gatheredOrderings = saveOrderings;
return(result);
}
protected override Expression VisitSubquery(SqlSubqueryExpression subquery)
{
this.Write("(");
using (this.AcquireIndentationContext())
{
this.Visit(subquery.Select);
this.WriteLine();
}
this.Write(")");
return(subquery);
}
protected override Expression VisitSubquery(SqlSubqueryExpression subquery)
{
return(subquery);
}
protected override Expression VisitSubquery(SqlSubqueryExpression subquery)
{
// Don't gather inside scalar & exists
return(subquery);
}
