Support use nvarchar for all varchar columns when using mssql (#12269)

* Support use nvarchar for all varchar columns when using mssql

* fix lint

* Change DEFAULT_VARCHAR to nvarchar

* Remove the config for default varchar since it's unnecessary

Author: lunny

go.mod

@@ -120,5 +120,5 @@ require (
 	mvdan.cc/xurls/v2 v2.1.0
 	strk.kbt.io/projects/go/libravatar v0.0.0-20191008002943-06d1c002b251
 	xorm.io/builder v0.3.7
-	xorm.io/xorm v1.0.3
+	xorm.io/xorm v1.0.4-0.20200718080127-318102c9ff87
 )

go.sum

@@ -979,5 +979,5 @@ xorm.io/core v0.7.2 h1:mEO22A2Z7a3fPaZMk6gKL/jMD80iiyNwRrX5HOv3XLw=
 xorm.io/core v0.7.2/go.mod h1:jJfd0UAEzZ4t87nbQYtVjmqpIODugN6PD2D9E+dJvdM=
 xorm.io/xorm v0.8.0 h1:iALxgJrX8O00f8Jk22GbZwPmxJNgssV5Mv4uc2HL9PM=
 xorm.io/xorm v0.8.0/go.mod h1:ZkJLEYLoVyg7amJK/5r779bHyzs2AU8f8VMiP6BM7uY=
-xorm.io/xorm v1.0.3 h1:3dALAohvINu2mfEix5a5x5ZmSVGSljinoSGgvGbaZp0=
-xorm.io/xorm v1.0.3/go.mod h1:uF9EtbhODq5kNWxMbnBEj8hRRZnlcNSz2t2N7HW/+A4=
+xorm.io/xorm v1.0.4-0.20200718080127-318102c9ff87 h1:vgc2F0wjD0cyrNrSKiIdWu123wuKkPQI84DZUKvJ6ns=
+xorm.io/xorm v1.0.4-0.20200718080127-318102c9ff87/go.mod h1:uF9EtbhODq5kNWxMbnBEj8hRRZnlcNSz2t2N7HW/+A4=

models/models.go

@@ -145,6 +145,8 @@ func getEngine() (*xorm.Engine, error) {
 	}
 	if setting.Database.Type == "mysql" {
 		engine.Dialect().SetParams(map[string]string{"rowFormat": "DYNAMIC"})
+	} else if setting.Database.Type == "mssql" {
+		engine.Dialect().SetParams(map[string]string{"DEFAULT_VARCHAR": "nvarchar"})
 	}
 	engine.SetSchema(setting.Database.Schema)
 	return engine, nil

vendor/modules.txt

@@ -916,7 +916,7 @@ strk.kbt.io/projects/go/libravatar
 # xorm.io/builder v0.3.7
 ## explicit
 xorm.io/builder
-# xorm.io/xorm v1.0.3
+# xorm.io/xorm v1.0.4-0.20200718080127-318102c9ff87
 ## explicit
 xorm.io/xorm
 xorm.io/xorm/caches