Fix pg model generation without tag (#1407)

1. fix pg model struct haven't tag
2. add pg command test from datasource

tools/goctl/model/sql/command/command_pg_test.go

@@ -0,0 +1,45 @@
+package command
+
+import (
+	"github.com/stretchr/testify/assert"
+	"github.com/tal-tech/go-zero/tools/goctl/config"
+	"github.com/tal-tech/go-zero/tools/goctl/model/sql/gen"
+	"github.com/tal-tech/go-zero/tools/goctl/util"
+	"path/filepath"
+	"testing"
+)
+
+// generate test table sql
+/*
+CREATE TABLE "public"."users" (
+  "id" serial NOT NULL,
+  "account" varchar(20) COLLATE "pg_catalog"."default" NOT NULL,
+  "avatar" text COLLATE "pg_catalog"."default",
+  "nick_name" varchar(60) COLLATE "pg_catalog"."default",
+  "register_time" timestamp(6) NOT NULL,
+  "update_time" timestamp(6),
+  "password" varchar(255) COLLATE "pg_catalog"."default",
+  "email" varchar(100) COLLATE "pg_catalog"."default",
+  "reset_key" varchar(10) COLLATE "pg_catalog"."default",
+  "active" bool NOT NULL DEFAULT true,
+  CONSTRAINT "users_pk" PRIMARY KEY ("id")
+)
+;
+
+ALTER TABLE "public"."users"
+  OWNER TO "postgres";
+*/
+
+func TestFromDatasource(t *testing.T) {
+	err := gen.Clean()
+	assert.Nil(t, err)
+
+	url := "postgres://postgres:postgres@127.0.0.1:5432/demo?sslmode=disable"
+
+	pattern := "users" // table name
+
+	cfg, err := config.NewConfig("")
+	tempDir := filepath.Join(util.MustTempDir(), "test")
+	err = fromPostgreSqlDataSource(url, pattern, tempDir, "public", cfg, false, false)
+	assert.Nil(t, err)
+}

tools/goctl/model/sql/parser/parser.go

@@ -360,6 +360,7 @@ func getTableFields(table *model.Table) (map[string]*Field, error) {
 		}
 
 		field := &Field{
+			NameOriginal:    each.Name,
 			Name:            stringx.From(each.Name),
 			DataType:        dt,
 			Comment:         each.Comment,