From e1b390a91c018ac8e13c92fffaddb65012244bf5 Mon Sep 17 00:00:00 2001
From: Lunny Xiao <xiaolunwen@gmail.com>
Date: Wed, 28 Jul 2021 13:19:02 +0800
Subject: [PATCH] implementation scan for mssql

---
 dialects/mssql.go | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/dialects/mssql.go b/dialects/mssql.go
index 3b935396..092d7f93 100644
--- a/dialects/mssql.go
+++ b/dialects/mssql.go
@@ -14,6 +14,7 @@ import (
 	"strings"
 
 	"xorm.io/xorm/core"
+	"xorm.io/xorm/internal/convert"
 	"xorm.io/xorm/schemas"
 )
 
@@ -712,3 +713,35 @@ func (p *odbcDriver) GenScanResult(colType string) (interface{}, error) {
 		return &r, nil
 	}
 }
+
+func (b *odbcDriver) Scan(ctx *ScanContext, rows *core.Rows, types []*sql.ColumnType, vv ...interface{}) error {
+	var scanResults = make([]interface{}, 0, len(types))
+	var replaces = make([]bool, 0, len(types))
+	var err error
+	for i, v := range vv {
+		var replaced bool
+		var scanResult interface{}
+		if types[i].DatabaseTypeName() == "NVARCHAR" {
+			scanResult = &sql.RawBytes{}
+			replaced = true
+		} else {
+			scanResult = v
+		}
+
+		scanResults = append(scanResults, scanResult)
+		replaces = append(replaces, replaced)
+	}
+
+	if err = rows.Scan(scanResults...); err != nil {
+		return err
+	}
+
+	for i, replaced := range replaces {
+		if replaced {
+			if err = convert.Assign(vv[i], scanResults[i], ctx.DBLocation, ctx.UserLocation); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}