internal override SqlExpression VisitColumnRef(SqlColumnRef cref)
{
SqlColumnRef ref2 = this.BubbleUp(cref);
if (ref2 == null)
{
throw Error.ColumnReferencedIsNotInScope(SqlResolver.GetColumnName(cref.Column));
}
return(ref2);
}
internal override SqlExpression VisitTableValuedFunctionCall(SqlTableValuedFunctionCall fc)
{
foreach (SqlColumn column in fc.Columns)
{
if (column == this.match)
{
if (this.found != null)
{
throw Error.ColumnIsDefinedInMultiplePlaces(SqlResolver.GetColumnName(this.match));
}
this.found = column;
return(fc);
}
}
return(fc);
}
internal override SqlTable VisitTable(SqlTable tab)
{
foreach (SqlColumn column in tab.Columns)
{
if (column == this.match)
{
if (this.found != null)
{
throw Error.ColumnIsDefinedInMultiplePlaces(SqlResolver.GetColumnName(this.match));
}
this.found = column;
return(tab);
}
}
return(tab);
}
internal override SqlRow VisitRow(SqlRow row)
{
foreach (SqlColumn column in row.Columns)
{
if (RefersToColumn(column, this.match))
{
if (this.found != null)
{
throw Error.ColumnIsDefinedInMultiplePlaces(SqlResolver.GetColumnName(this.match));
}
this.found = column;
return(row);
}
}
return(row);
}
internal override SqlSelect VisitSelect(SqlSelect select)
{
this.Visit(select.Row);
if (this.found == null)
{
this.Visit(select.From);
if (this.found == null)
{
return(select);
}
if (select.IsDistinct && !this.match.IsConstantColumn)
{
throw Error.ColumnIsNotAccessibleThroughDistinct(SqlResolver.GetColumnName(this.match));
}
if ((select.GroupBy.Count != 0) && !this.IsFoundInGroup(select))
{
throw Error.ColumnIsNotAccessibleThroughGroupBy(SqlResolver.GetColumnName(this.match));
}
this.ForceLocal(select.Row, this.found.Name);
}
return(select);
}