diff --git a/mysql_dialect.go b/mysql_dialect.go
index d39c4154..f3471c08 100644
--- a/mysql_dialect.go
+++ b/mysql_dialect.go
@@ -216,6 +216,8 @@ func (db *mysql) SqlType(c *core.Column) string {
 		}
 		res += strings.TrimLeft(opts, ",")
 		res += ")"
+	case core.NVarchar:
+		res = core.Varchar
 	default:
 		res = t
 	}
diff --git a/postgres_dialect.go b/postgres_dialect.go
index 6f23056a..e7d24987 100644
--- a/postgres_dialect.go
+++ b/postgres_dialect.go
@@ -797,6 +797,8 @@ func (db *postgres) SqlType(c *core.Column) string {
 		res = core.Real
 	case core.TinyText, core.MediumText, core.LongText:
 		res = core.Text
+	case core.NVarchar:
+		res = core.Varchar
 	case core.Uuid:
 		res = core.Uuid
 	case core.Blob, core.TinyBlob, core.MediumBlob, core.LongBlob:
diff --git a/sqlite3_dialect.go b/sqlite3_dialect.go
index 0b9c4298..66c111dd 100644
--- a/sqlite3_dialect.go
+++ b/sqlite3_dialect.go
@@ -155,7 +155,7 @@ func (db *sqlite3) SqlType(c *core.Column) string {
 		return core.Numeric
 	case core.TimeStampz:
 		return core.Text
-	case core.Char, core.Varchar, core.TinyText, core.Text, core.MediumText, core.LongText:
+	case core.Char, core.Varchar, core.NVarchar, core.TinyText, core.Text, core.MediumText, core.LongText:
 		return core.Text
 	case core.Bit, core.TinyInt, core.SmallInt, core.MediumInt, core.Int, core.Integer, core.BigInt, core.Bool:
 		return core.Integer