From 61cd7f1129560fdcad5c2d4476bbdec626216f0b Mon Sep 17 00:00:00 2001
From: Kyle Conroy <kyle@conroy.org>
Date: Thu, 12 Dec 2019 12:57:08 -0800
Subject: [PATCH] internal/dinosql: Dereference alias nodes on walk

Fixes #153
---
 internal/dinosql/soup.go | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/internal/dinosql/soup.go b/internal/dinosql/soup.go
index 895096a9a3..17786526eb 100644
--- a/internal/dinosql/soup.go
+++ b/internal/dinosql/soup.go
@@ -854,19 +854,25 @@ func Walk(f Visitor, node nodes.Node) {
 
 	case nodes.RangeFunction:
 		walkn(f, n.Functions)
-		walkn(f, n.Alias)
+		if n.Alias != nil {
+			walkn(f, *n.Alias)
+		}
 		walkn(f, n.Coldeflist)
 
 	case nodes.RangeSubselect:
 		walkn(f, n.Subquery)
-		walkn(f, n.Alias)
+		if n.Alias != nil {
+			walkn(f, *n.Alias)
+		}
 
 	case nodes.RangeTableFunc:
 		walkn(f, n.Docexpr)
 		walkn(f, n.Rowexpr)
 		walkn(f, n.Namespaces)
 		walkn(f, n.Columns)
-		walkn(f, n.Alias)
+		if n.Alias != nil {
+			walkn(f, *n.Alias)
+		}
 
 	case nodes.RangeTableFuncCol:
 		if n.TypeName != nil {
@@ -889,7 +895,9 @@ func Walk(f Visitor, node nodes.Node) {
 		walkn(f, n.ValuesLists)
 		walkn(f, n.Coltypes)
 		walkn(f, n.Colcollations)
-		walkn(f, n.Alias)
+		if n.Alias != nil {
+			walkn(f, *n.Alias)
+		}
 		walkn(f, n.Eref)
 		walkn(f, n.SecurityQuals)