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Expand file tree Collapse file tree Original file line number Diff line number Diff line change @@ -854,19 +854,25 @@ func Walk(f Visitor, node nodes.Node) {
854854
855855 case nodes.RangeFunction :
856856 walkn (f , n .Functions )
857- walkn (f , n .Alias )
857+ if n .Alias != nil {
858+ walkn (f , * n .Alias )
859+ }
858860 walkn (f , n .Coldeflist )
859861
860862 case nodes.RangeSubselect :
861863 walkn (f , n .Subquery )
862- walkn (f , n .Alias )
864+ if n .Alias != nil {
865+ walkn (f , * n .Alias )
866+ }
863867
864868 case nodes.RangeTableFunc :
865869 walkn (f , n .Docexpr )
866870 walkn (f , n .Rowexpr )
867871 walkn (f , n .Namespaces )
868872 walkn (f , n .Columns )
869- walkn (f , n .Alias )
873+ if n .Alias != nil {
874+ walkn (f , * n .Alias )
875+ }
870876
871877 case nodes.RangeTableFuncCol :
872878 if n .TypeName != nil {
@@ -889,7 +895,9 @@ func Walk(f Visitor, node nodes.Node) {
889895 walkn (f , n .ValuesLists )
890896 walkn (f , n .Coltypes )
891897 walkn (f , n .Colcollations )
892- walkn (f , n .Alias )
898+ if n .Alias != nil {
899+ walkn (f , * n .Alias )
900+ }
893901 walkn (f , n .Eref )
894902 walkn (f , n .SecurityQuals )
895903
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