Merge commit 'refs/pull/33/head' of https://github.com/hackolade/PostgreSQL

Author: pdesmarets

polyglot/adapter.json

@@ -42,6 +42,33 @@
  {
 	"modify": {
 		"field": [
+			{
+				"from": {
+					"type": "nvarchar",
+					"mode": "nchar"
+				},
+				"to": {
+					"mode": "char"
+				}
+			},
+			{
+				"from": {
+					"type": "nvarchar",
+					"mode": "ntext"
+				},
+				"to": {
+					"mode": "text"
+				}
+			},
+			{
+				"from": {
+					"type": "varchar",
+					"mode": "tinytext"
+				},
+				"to": {
+					"mode": "text"
+				}
+			},
 			{
 				"from": {
 					"type": "nvarchar"